Vinpro Technical Harvest Report 2026

Technical Harvest Report

2026

Contents

OVERVIEW

3 4

CLICK ON EACH REGION TO GO TO THE PAGE.

SEASONAL TRENDS

14 18 18 21 21 22 22 25 25 26 30 34 38 38 42 42 43 47 51 54

BREEDEKLOOF

CAPE SOUTH COAST

Cape South Coast

Elgin District

Hemel-en-Aarde

CAPE TOWN

Cape Town Durbanville Constantia

KLEIN-KAROO

NORTHERN CAPE

OLIFANTS RIVER

PAARL

Paarl

Tulbagh

Wellington

ROBERTSON

Note: The target audience for this technical report is producers, viticulturists and other stakeholders in the wine industry. The in-depth regional overviews serve as a technical reference source for the 2026 harvest; therefore, macro- and micro-climatic phenomena are discussed in each regional overview. Given the geographical distribution of production regions, adjacent regions may overlap significantly, while distant regions may differ more. The collection of regional reports aims to be meaningful as standalone references. Relevant vineyard surface figures (SAWIS) are also reported per region to provide the necessary context.

STELLENBOSCH

SWARTLAND

Darling

56

WORCESTER

Data supplied by:

Design: Avant Garde 021 863 3165 | Editing: Mieke de Jager

VINPRO TECHNICAL HARVEST REPORT 2026 2

Overview

A pendulum season saw producers shift from one extreme to another as the weather fluctuated between dry and wet conditions. In response to these prevailing conditions, cellars and viticulturists had to repeatedly adjust their approach. Nevertheless, South African producers demonstrated resilience and delivered an impressive harvest. At the time of writing (May 2026), the total crop is estimated at 1,370 million tonnes, representing a 7,4% increase on the rebound crop of 2025. The 2026 harvest appears to align with seasons such as 2020, and production levels therefore remain comparatively lower than those of 2021 and 2022. A further contributing factor to the higher yield is the national vineyard footprint, which currently shows signs of stabilisation

following a prolonged period of decline, with the total area under vines decreasing by only 19 hectares year-on-year to 85 525 ha. Moderate summer conditions in 2025, parti cularly during bunch initiation, laid an excellent foundation for fruit development in 2026. Low disease pressure during this period resulted in vineyard canopies remaining in excellent condition after harvest. A warm, dry autumn with limited rainfall promoted the accumulation of carbohydrate reserves, particularly where sufficient irrigation was available. Winter rainfall was consistent with or slightly below the long-term average, yet still with adequate replenishment of soil profiles and storage dams, although runoff was limited. The accumulation

VINPRO TECHNICAL HARVEST REPORT 2026 3

Seasonal Trends

Figure OS 1: Accumulated chill units (Infruitec model) for May to August 2025 compared with the long-term average. Blue shading indicates above-average values, while red shading indicates below average values.

VINPRO TECHNICAL HARVEST REPORT 2026 4

Seasonal Trends

Figure OS 2: Rainfall distribution in the Western Cape for September to December 2025. Dark red shading indicates rainfall amounts below the long-term average, expressed in mm.

VINPRO TECHNICAL HARVEST REPORT 2026 5

of chill units commenced later than normal but exceeded that of the previous winter by June and July 2025. This factor appears to have been one of the most important favourable drivers of the season. The winter, however, ended early, with drier and warmer conditions recorded in August. Warm, dry spring conditions resulted in bud burst occurring approximately seven to ten days earlier than normal, with notably uniform bud break and minimal frost damage reported. Higher soil temperatures promoted early and healthy vegetative growth. These conditions were largely favourable for flowering, fertilisation and fruit set, although some late cultivars, such as Cabernet Sauvignon and Colombar, exhibited weaker set. Overall, improved bunch numbers per vine were recorded, particularly in early cultivars such as Chardonnay, Pinotage and, to a lesser extent,

Chenin Blanc and Sauvignon Blanc, indicating the positive impact of adequate winter chill and optimal spring conditions. The early, dry summer trend shifted in February, with widespread rainfall and moderate to cool maximum temperatures recorded. Heavy showers provided relief, particularly in the eastern parts of the wine-producing regions such as the Klein Karoo, Robertson and Cape South Coast, with an uneven and locally intense distribution. Additionally, cool and humid conditions were recorded during the second half of the season in the Northern Cape, Olifants River and Breedekloof/ Worcester regions. Associated sanitary challenges tempered crop expectations in some areas; however, in most cases, damage was limited to cultivars which were at or near their harvest window at the time.

VINPRO TECHNICAL HARVEST REPORT 2026 6

March brought intense heat, resulting in canopy senescence, berry dehydration and a marked acceleration in ripening. Initial concerns regarding the impact of limited water availability were, however, alleviated by the rainfall. Higher than-expected production levels were recorded in coastal regions such as the Swartland and Cape Town, as well as in supplementary irrigation areas such as Stellenbosch and parts of Paarl, particularly for early cultivars such as Chardonnay, Chenin Blanc and Pinotage. Overall, it appears that the dry conditions did result in markedly smaller berry sizes; however, this effect was offset by improved fertility, namely a higher number of berries per bunch and a greater number of bunches per vine. Early quality indicators are excellent, with Chardonnay and Sauvignon Blanc exhibiting well-balanced sugar and acid levels and appealing flavour profiles. Humid conditions

posed challenges for cultivars such as Chenin Blanc, where winemakers were required to apply careful selection to ensure quality. A compact harvest window placed sustained pressure on cellar capacity, particularly following the rain-induced delay and subsequent warm conditions in March. Across red cultivars, uniform ripening, smaller berry size and good colour development – particularly in late cultivars – proved advantageous for the industry. This resulted in the harvest reaching completion almost two weeks earlier than the norm. Optimal ripening levels resulted in red wines such as Pinotage and Cabernet Sauvignon of outstanding quality, with deep colour and fully developed flavour profiles. Although the 2026 season kept most stakeholders on edge, producers can reflect with confidence on a job well done, with sufficient volumes and premium quality selections available for market.

VINPRO TECHNICAL HARVEST REPORT 2026 7

Seasonal Trends

Figure OS 3: Rainfall distribution for February 2026 in the Western Cape. Blue shading indicates above-average rainfall, while red shading indicates below-average values.

VINPRO TECHNICAL HARVEST REPORT 2026 8

Seasonal Trends

Figure OS 4: Maximum temperatures for March 2026 in the Western Cape compared with the long term average. Blue shading indicates below-average temperatures, while red shading indicates above-average temperatures.

VINPRO TECHNICAL HARVEST REPORT 2026 9

OLIFANTS RIVER 8 236 ha

WORCESTER 6 408 ha

SWARTLAND 11 539 ha

BREEDEKLOOF 12 678 ha

PAARL 13 678 ha

CAPE TOWN 2 495 ha

ROBERTSON 13 010 ha

STELLENBOSCH 11 532 ha

CAPE SOUTH COAST 2 629 ha

2025 SAWIS Statistical Districts

NORTHERN CAPE AND OTHER 2 347 ha

KLEIN KAROO 1 974 ha

Breedekloof Cape South Coast

Cape Town Klein Karoo

NORTHERN CAPE/ REST OF SA 2 347 ha

Northern Cape Olifants River Paarl Robertson Stellenbosch

WESTERN CAPE 84 178 ha

Swartland Worcester

The Vinpro Consultation Service’s team of specialists in viticulture, soil science, and GIS offers wine producers innovative, tailored solutions that support both vineyard and cellar operations. With a strong presence across all major wine growing regions, the team provides strategic, hands-on support to help producers navigate the challenges of a rapidly evolving industry. Guided by Vinpro’s purpose – to convert technical knowledge into tangible solutions across every aspect of production – they empower clients and members to consistently produce higher-quality products of the vine. The goal is clear: to drive profitable yields that enable wine businesses to thrive. Collectively, the team brings over 180 years of experience to the table, blending tradition and innovation for long-term success. CONSULTATION SERVICE We walk the vineyard with you

Etienne Terblanche Consultation Service Manager 072 402 7434 etienne@vinpro.co.za

Hanno van Schalkwyk Viticulturist: Paarl/ Swartland 083 455 5192 hanno@vinpro.co.za

Gert Engelbrecht Viticulturist: Stellenbosch/ Cape South Coast 072 152 4028 gerte@vinpro.co.za

Hennie Visser Viticulturist: Robertson 083 455 5193 henniev@vinpro.co.za

tel: +27 (0)21 276 0429 | email: info@vinpro.co.za | website: www.vinpro.co.za

VINPRO TECHNICAL HARVEST REPORT 2026 12

Consultation Service

Advancement of Viticulture Collective South Africa ADVANCEMENT OF VITICULTURE COLLECTIVE SOUTH AFRICA

ADVICO is a collaborative platform that supports wine grape growers through practical research activities. Evolving from the GEN-Z Vineyard Project launched by Vinpro in 2016, the platform was created to bridge the gap between research and real world vineyard application. By connecting growers, experts, researchers and industry partners, ADVICO drives practical solutions to the production challenges facing modern viticulture. Growers today must adapt to shifting climates, limited natural resources and increasing input costs. ADVICO supports this journey through research and demonstration to generate actionable, on-farm knowledge, enabling informed decision making and more resilient vineyards across South Africa.

Callie Coetzee Viticulturist: Worcester/ Breedekloof 083 526 1486 callie@vinpro.co.za

Klaas Coetzee Viticulturist:

Olifants River 082 801 3737 klaas@vinpro.co.za

Emma Carkeek Knowledge & Technology Transfer Manager 082 568 2918 emma@vinpro.co.za

Heinrich Scholms GIS soil scientist 083 480 2686 heinrich@vinpro.co.za

Vivian White Soil scientist 072 556 6311 vivian@vinpro.co.za

Logan Jooste ADVICO Viticulturist 078 142 9931 logan@vinpro.co.za

Elzanne Bosman ADVICO Viticulturist 082 776 8049 elzanne@vinpro.co.za

Yolandi Botha Agricultural Economist 021 276 0429 yolandi@vinpro.co.za

Ané Theron Agricultural Economist 021 276 0429 ane@vinpro.co.za

VINPRO TECHNICAL HARVEST REPORT 2026 13

Breedekloof BREEDEKLOOF DISTRICT

22%

Chenin Blanc Colombar Sauvignon Blanc Pinotage Chardonnay Other

37%

TOP 5 CULTIVARS

14%

6%

14%

7%

MARAIS FAMILY WINES BREEDEKLOOF

TOTAL HECTARES 12 679 UPROOTINGS IN 2025 407 | PLANTINGS IN 2025 450

VINPRO TECHNICAL HARVEST REPORT 2026 14

Climatic and viticultural trends

Conditions during the flowering period were ideal, with a moderate climate and low disease pressure, all of which contributed to good fruit set. Consequently, the fertility of early cultivars, namely Chardonnay, Sauvignon Blanc and Chenin Blanc, was promising in terms of bunch numbers and berry set. As the dry summer season progressed, pressure increased on runoff-dependent water sources, and producers were required to manage irrigation resources more conservatively. Nevertheless, restrained and moderate canopy growth also reduced water demand, and despite limited water availability, producers achieved excellent yields. Harvest commenced approximately seven days earlier than the previous year, and despite perceptions, the rate of ripening remained broadly comparable to long-term trends. Most cellars in the region initially focused on Sauvignon Blanc, followed by Chenin Blanc and Pinotage, which were received later than normal. General remarks

The post-harvest period was favourable, characterised by warm and dry conditions. Vineyard canopies were healthy and

functional overall, and it was expected that sufficient carbohydrate reserves were accumulated and stored. May was slightly warmer than usual, although temperatures declined significantly from the beginning of June, and chill units began to accumulate accordingly. Rainfall from 1 May to 31 August was lower than the long term average and considerably less than the preceding above-average wet seasons (178 mm in 2025 compared with 355 mm in 2024, as measured at the Bothasguns weather station) (Figure BK 1) . Nevertheless, precipitation was still sufficient to replenish farm dams through runoff water. August was particularly dry; only 22 mm of rainfall was recorded in 2025, compared with nearly 100 mm in the preceding year. The accumulation of chill units was comparable to the previous year, with approximately 530 Infruitec units recorded for both 2024 and 2025. There was therefore no concern regarding adequate dormancy release, and the use of dormancy-breaking agents was not required. Vineyards exhibited earlier-than-normal bud burst; early cultivars preceded normal timing by approximately seven days, while mid- to late season cultivars were consistent with the norm. Budding was uniform, and by flowering, the vineyards maintained this accelerated pace.

From September 2025 to January 2026, only 20.8 mm of rainfall was recorded at the Bothasguns weather station (Figure BK 2) . This season

delivered one of the driest spring and summer periods in recent years, with rainfall levels substantially below the long-term average of approximately 90 mm. The absence of summer rainfall reduced disease pressure; however, untimely rainfall and resulting high

Monthly rainfall for May–August (2024 vs 2025)

100 150 200 250 300

0 50

Monthly precipitation (mm)

May

Jun

Jul

Aug

2024 2025

Figure BK 1: Year-on-year comparison of rainfall for May to August (2024 vs. 2025), as measured at the Bothasguns weather station.

VINPRO TECHNICAL HARVEST REPORT 2026 15

Monthly rainfall (Sep 2025–Jan 2026)

20

15

10

5

Monthly rainfall (mm)

0

Sep

Oct

Nov

Dec

Jan

Figure BK 2. Rainfall from September 2025 to January 2026, as measured at the Bothasguns weather station.

Daily rainfall and relative humidity (4–11 Feb 2026)

0 10 20 30 40 50 60 70 80 90 100 04-Feb-26 05-Feb-26 06-Feb-26 07-Feb-26 08-Feb-26 09-Feb-26 10-Feb-26 11-Feb-26

35

30

25

20

15

10

Mean relative humidity (%)

Daily rainfall (mm)

5

0

Rainfall (mm)

Mean relative humidity (%)

Figure BK 3. Rainfall and humidity from 4 February 2026 to 11 February 2026, as measured at the Blaarfontein weather station.

humidity in February led to increased disease pressure in Chenin Blanc and Sauvignon Blanc (Figure BK 3) . Infections were recorded in some red cultivars, although the impact on red grapes was generally less pronounced. Lower rainfall resulted in moderate growth and reduced weed pressure, but also smaller berry size. Heatwave conditions in March, with extremely high maximum temperatures, promoted sugar accumulation, in some cases mostly through dehydration. This led to production losses and quality challenges in vineyards already under water stress, while in others it promoted full ripeness and high quality.

Photo BK1. Well-branched inflorescences with promising yield potential already evident early in the season in Chenin Blanc.

VINPRO TECHNICAL HARVEST REPORT 2026 16

Production trends Chardonnay performance was a welcome surprise this season; despite the dry conditions, an increase in production was notable, further emphasising the importance of favourable conditions during the preceding season for this cultivar. The strong performance of Sauvignon Blanc is largely attributed to the cohort of young vineyards that came into production this year. In the case of Chenin Blanc, increased fertility was somewhat tempered by sanitary challenges following the rainfall, although production still exceeded the low levels recorded in 2025 (Photo BK1) . Colombar production remained similar to 2025, primarily due to the smaller berry size for this late cultivar. Early red cultivars delivered an average crop, while the yields of late cultivars were slightly lower as a result of the severe heat at the beginning of March.

Grape and wine quality Analytical results for both early and late white cultivars were excellent,

and early indications of flavour development in the young wines are particularly promising. White grapes received during the mid-harvest window following the February rainfall showed suboptimal analyses; however, cellars were able to handle these grapes separately and process them effectively. Red cultivars generally ripened more slowly; consequently, colour and wine quality are exceptional. Red cultivars, in particular, appear to have benefited from the dry summer conditions and elevated temperatures towards the end of the ripening period.

Photo BK 2. Ideal fruit set in Cabernet Sauvignon, supported by particularly healthy canopies during the early growing season.

Summary The harvest was initially expected to be slightly higher than in 2025, driven by improved fertility, particularly in Chenin Blanc vineyards. The season ultimately alternated between dry and wet extremes, resulting in contrasting cultivar trends. Overall, this translated into only a marginal year-on-year increase in crop size from 2025 to 2026, with a diverse range of wine styles and quality outcomes expected.

“

OPSTAL ESTATE WITH THE SLANGHOEK MOUNTAINS

Throughout the past season, ideal soil moisture and temperatures were maintained during bud break and flowering, resulting in good fertility. Following the dry season, timely rainfall in February replenished water resources. Harvest started early and maintained a consistently rapid pace through to completion. In short: it was a complex and challenging season. – Johannes Mellet, Viticulturist, Arbelos Wines

Callie Coetzee | 083 526 1486 | callie@vinpro.co.za

VINPRO TECHNICAL HARVEST REPORT 2026 17

Cape South Coast CAPE SOUTH COAST REGION

28%

27%

TOP 5 CULTIVARS

Sauvignon Blanc Chardonnay Pinot Noir Shiraz Cabernet Sauvignon Other

5%

15%

11%

14%

BLACK OYSTERCATCHER WINES CAPE SOUTH COAST

TOTAL HECTARES 2 616 UPROOTINGS IN 2025 75 | PLANTINGS IN 2025 17

VINPRO TECHNICAL HARVEST REPORT 2026 18

Climatic and viticultural trends

significantly earlier, particularly in the Hemel en-Aarde and Agulhas wards. Persistently warm conditions maintained this accelerated pace, and véraison was recorded between two and three weeks earlier than normal. As was observed in the Boland, the onset of the new year brought moderate temperatures, with maximum temperatures in January and February closer to long-term averages. These dry conditions, however, began to shift in February. Weather conditions during the ripening period were favourable until rainfall was recorded on 9 February. Thereafter, thunderstorms and intense rainfall occurred across the Cape South Coast region, with precipitation ranging from approximately 35 mm in the far east to more than 200 mm in extreme cases, such as in Botrivier. Groundwater levels were adequately replenished during this period, which was beneficial for producers reliant on supplementary irrigation. The increased rainfall resulted in elevated disease pressure. Pinot Noir and Sauvignon Blanc vineyards were particularly affected by the wet conditions, as these coincided with their harvest windows. The elevated humidity in the days that followed further exacerbated this negative impact.

Warmer post-harvest conditions, coupled with adequate soil moisture, allowed vineyards to retain green leaves well into autumn. Rainfall in

April was below average, although adequate precipitation was recorded in May. Sufficient winter rainfall replenished soil profiles and storage dams to capacity. Maximum temperatures in June and July remained consistently below normal, with few warm days, thereby promoting the accumulation of chill units. Vineyards were therefore able to undergo an effective winter dormancy period without significant temperature fluctuations. By September, spring conditions prevailed, characterised by low rainfall and warm, sunny weather, which accelerated bud break and initial growth. However, drier conditions from as early as August limited soil moisture retention. Coupled with warmer than-normal temperatures from August to December and the absence of cold fronts, this resulted in optimal and uninterrupted canopy development, including strong root function and accelerated vegetative and fruit growth. Favourable conditions during flowering ensured optimal fruit set. Flowering dates were

Monthly rainfall (2025–2026) relative to the long-term average

120

100

80

60

40

Monthly rainfall (mm)

20

0

Jan Feb Mar

Apr

May Jun Jul

Aug Sep

Oct

Nov

Dec

Rainfall 2025 (mm)

Rainfall 2026 (mm)

Mean rainfall 2019 – 2025 (mm)

Figure KSK 1. Monthly rainfall for January to December (2025 vs. 2026), as measured at the Ertjiesvlei weather station, Hemel-en-Aarde Valley.

VINPRO TECHNICAL HARVEST REPORT 2026 19

General remarks

The most notable challenging factor during the 2026 season was undoubtedly the rainfall recorded on 9 February and in the days that

Production trends Increased production was recorded across all major cultivars in this region, namely Sauvignon Blanc, Shiraz, Chardonnay and Pinot Noir. Disease pressure, particularly from rot, reduced production, and yields would have been higher in its absence. A large proportion of the Chardonnay crop, however, escaped the effects of the heavy rainfall, and it was this cultivar in particular that performed well. Warm growing-season conditions sustained accelerated physiological development, with harvest starting earlier than the previous year and also finishing earlier.

followed. Several producers in the region reported precipitation in excess of 100 mm. Producers acted swiftly to limit the development of rot through leaf removal and targeted spray applications, particularly in affected Pinot Noir and Sauvignon Blanc blocks. Healthy grapes had to be selectively sorted, which further slowed the pace of processing.

Photo KSK 1. Uniform bud break observed in Chardonnay in Elgin.

Photo KSK 3. Botrytis-infected Sauvignon Blanc bunch removed during harvest in the Hemel-en-Aarde Valley to ensure quality.

Photo KSK 2. Above-average fertility in Chardonnay already evident at the pea-size berry stage in Elgin.

VINPRO TECHNICAL HARVEST REPORT 2026 20

Grape and wine quality

Summary Although the 2026 season initially showed promise in terms of growth, quality and production, producers were confronted with heavy rainfall during harvest. Sound management practices enabled producers to manage this challenge effectively and to harvest selectively and strategically. Nevertheless, wines of high quality can be expected.

Chardonnay was prominent in terms of early quality indicators. Pinot Noir and Sauvignon Blanc, however, presented greater challenges, and producers

were required to adopt a selective and strategic approach to separate premium-quality grapes from those affected by rot. Good sugar levels were achieved, owing to the warm conditions throughout the season, and the intensive work in both the vineyard and cellar is expected to result in complex flavour profiles that may distinguish the 2026 vintage from others. The district was fortunate to receive near normal winter rainfall until August. From September onwards, dry conditions were favourable for vegetative growth and promoted accelerated development. Grapes remained particularly healthy throughout the season, with low disease pressure until the heavy rainfall in February. Producers, however, implemented effective canopy management and disease control practices to ensure a good harvest, with solid production and quality outcomes. ELGIN DISTRICT

HEMEL-EN-AARDE VALLEY WARD

A sharp decline in rainfall from August to January resulted in soil profiles drying out earlier, and with minimal soil moisture saturation, conditions were conducive to healthy and balanced vegetative growth. Coupled with good fertility and owing to the favourable preceding growing season, producers achieved higher production levels than in 2025. The heavy rainfall in February, however, presented several challenges, which producers managed successfully.

The exceptional rainfall we received during the first few weeks of February presented significant challenges. The rain and increased humidity substantially elevated disease pressure, necessitating greater attention to sorting – both in the vineyard and in the cellar. Crop volumes, particularly for Chardonnay, were considerably higher than normal, and I am very satisfied with how the wines are developing. The increased Botrytis pressure also created an opportunity to produce a noble late-harvest Riesling for the first time since 2021. – Andries Burger, Winemaker, Paul Cluver Family Wines “

GABRIELSKLOOF CAPE SOUTH COAST

Gert Engelbrecht | 072 152 4028 | gerte@vinpro.co.za

VINPRO TECHNICAL HARVEST REPORT 2026 21

Cape Town CAPE TOWN DISTRICT

23%

29%

Sauvignon Blanc Chardonnay Pinot Noir Shiraz Cabernet Sauvignon Other

TOP 5 CULTIVARS

6%

11%

16%

15%

TOTAL HECTARES 2 492 UPROOTINGS IN 2025 89 | PLANTINGS IN 2025 48

VINPRO TEGNIESE OESVERSLAG 2024 22 VINPRO TECHNICAL HARVEST REPORT 2026 22

Climatic and viticultural trends

Daytime temperatures were also higher from the outset and remained elevated throughout the growing season; however, the moderating influence of the coast ensured that this trend was less pronounced than in more continental regions. The reproductive cycle from flowering to fruit set progressed smoothly, with a limited occurrence of extreme weather events. Dry conditions and resulting low disease pressure maintained healthy canopies, and excessive vegetative vigour was not a concern. Canopies were well balanced, and minimal additional canopy management interventions were required. As in other regions, the elevated early-season temperatures subsided during January and February, resulting in more temperate conditions. Monthly maximum temperatures were lower, while minimum temperatures were higher. Relative humidity was also approximately 10% higher than normal, resulting in reduced water use. This also assisted vineyards in maintaining function under the dry conditions. The extremely dry conditions were interrupted by regular, light rainfall in February and March (particularly in Constantia), and although precipitation totals were low, disease pressure did increase. In the Durbanville ward, rainfall was virtually absent throughout the season, contributing to a very healthy grape crop.

Temperate conditions during the 2025 season have been well documented, and the excellent growth and ripening conditions of

2025 undoubtedly laid the foundation for the progression of the 2026 season. The 2026 season commenced with a favourable post-harvest period, during which reserve accumulation could occur optimally, and leaves were retained well into late autumn. From May to August, ideal late autumn and winter conditions prevailed, with adequate chilling accumulation, few warm days and favourable average rainfall, which replenished dams and soil profiles to capacity. Vineyards, therefore, benefited from optimal winter dormancy conditions. With the onset of spring in September, and for the remainder of the growing and ripening season through to February, the Cape Town region shifted from its typical pattern of regular summer rainfall to exceptionally dry conditions. This region places particular emphasis on dryland cultivation and supplementary irrigation, and the value of vines established on well-buffered soils was evident this year. Owing to a relatively short but effective winter, soils did not remain waterlogged for extended periods, resulting in earlier root activity and rapid canopy development.

Monthly rainfall (2025 vs 2026)

100 120 140 160

0 20 40 60 80

Total monthly rainfall (mm)

Jan Feb Mar

Apr

May Jun Jul

Aug Sep

Oct

Nov

Dec

Rainfall 2025 (mm)

Rainfall 2026 (mm)

Mean rainfall 2016 – 2025 (mm)

Figure KAA 1. Monthly rainfall (January to December) for 2025 and 2026, as measured at the Diemersdal weather station, Durbanville.

VINPRO TECHNICAL HARVEST REPORT 2026 23

General remarks

Grape and wine quality

In contrast to the heavy rainfall recorded in surrounding regions during February, precipitation in the Cape Town district was notably

Producers were required to respond proactively to manage the compact ripening season and harvest period. While early cultivars were close to

low, and producers in the Constantia ward experienced limited rot-related challenges. A distinctive feature of the season was the extreme heat from 10 to 12 March, with temperatures approaching 40 °C – conditions seldom experienced by producers in Cape Town. While this aided the rapid attainment of full ripeness in late red cultivars, which is often challenging in this cooler region, it likely also had a negative impact on vineyards already under water stress. Production trends While conditions in the district were favourable for a good harvest, initial crop estimates were not particularly high, given the dry growing season and the fact that 40% of the district’s vineyards are dryland. However, the positive factors of the season compensated for the dry conditions, and producers were able to achieve better than-expected production levels. Cooler, humid summer conditions, good soil water holding capacity, and excellent canopy management by Cape producers were key contributing factors. Early cultivars such as Chardonnay and Sauvignon Blanc performed particularly well.

normal ripening dates, late cultivars ripened earlier, owing to a warm March. The harvest was therefore completed early, with excellent grape analyses and favourable sugar levels. Full, complex wines with well-defined varietal character are expected from the 2026 vintage. Summary A truly Mediterranean season unfolded in 2026, characterised by a wet winter and an exceptionally dry growing season. This resulted in an excellent balance between vegetative growth and crop load, prudent irrigation practices, and a notable increase in crop size compared with 2025. This performance reflects the adaptability and management expertise of Cape producers.

Photo KAA 1. Uniform bud break observed in Sauvignon Blanc in Durbanville.

VINPRO TECHNICAL HARVEST REPORT 2026 24

CONSTANTIA WARD

Healthy, well-developed canopies were the norm this season. Frequent light rainfall in February interrupted the otherwise extremely dry growing season and posed challenges in terms of rot management and selective harvesting. Vineyards were also exposed to exceptionally high temperatures during mid March, which is unusual for this region. It was a distinctive season, and the wines are expected to reflect these conditions.

DURBANVILLE WARD

The Durbanville ward delivered a notable increase in production, despite not receiving the levels of rainfall recorded in other regions during February. The grapes were healthy, the vineyards were well balanced, and the resulting wine quality prospects are promising.

Photo KAA 2. Early, uniform and complete ripening of Shiraz in the Constantia ward.

Exceptionally high production levels were recorded for Chardonnay and Cabernet Sauvignon. Excellent quality prospects are expected, despite a challenging and compact harvest period, particularly in terms of intake logistics, where the harvest commenced at the normal time but was completed earlier. – Floricius Beukes, Viticulturist and Farm Manager, Groot Constantia “

LOTHIAN VINEYARDS HARVEST 2024

Gert Engelbrecht | 072 152 4028 | gerte@vinpro.co.za

VINPRO TECHNICAL HARVEST REPORT 2026 25

Klein Karoo KLEIN KAROO REGION

30%

Colombar Chenin Blanc Muscat D’Alexandrie Sauvignon Blanc

35%

TOP 5 CULTIVARS

4%

Shiraz Other

4%

5%

22%

GRAHAM BECK ROBERTSON VINEYARDS

TOTAL HECTARES 2 021 UPROOTINGS IN 2025 28 | PLANTINGS IN 2025 67

VINPRO TECHNICAL HARVEST REPORT 2026 26

Climatic and viticultural trends

Vegetative growth was generally less vigorous than normal, which can be attributed to increased water demand, drier soils, higher temperatures and limited irrigation water availability in certain areas. Even where producers had sufficient irrigation water available, constraints on irrigation capacity placed them under pressure to meet vineyard water requirements under conditions of high evapotranspiration. Rainfall during the early growing season (from September to the end of December) was approximately 80% below the long term average. As a result, phenology was advanced, with flowering and fruit set also occurring earlier than normal under particularly dry and warm conditions. These favourable conditions supported good fruit set, and véraison was likewise observed earlier than usual. Despite the good set, berry size was notably smaller, particularly in vineyards in the Ladismith area that did not receive sufficient water, which ultimately had a negative impact on crop size. The first vineyard blocks reached ripeness approximately one week earlier than normal. Cooler conditions in January and February delayed the ripening of early cultivars, while the remainder of the crop followed a more typical ripening pace. Some blocks, however, had to be harvested prematurely due to water shortages.

Lower rainfall from December to the end of February, with concomitant healthy canopies, allowed vineyard leaves to remain on the vines longer

than normal after the 2025 harvest. Although rainfall during this period was 50% below the long-term average, it was still sufficient to support effective reserve accumulation and the uptake of post-harvest fertilisation. The Klein Karoo experienced a slightly cooler but drier winter. Total rainfall for the winter months was approximately 20% below the long term average, with most of the precipitation recorded in June. From July onwards, however, conditions were extremely dry. As a result, soil profiles were not adequately replenished, and in certain areas of the Klein Karoo, particularly in the Ladismith area, irrigation water was severely limited. The accumulation of chill units was nevertheless sufficient for dormancy release, and the application of dormancy breaking agents was therefore not required. Spring was approximately 1–3 °C warmer than normal. Higher temperatures as well as drier and warmer soils resulted in the first vineyard blocks reaching bud break one to two weeks earlier than usual. Vineyards, however, showed good and uniform bud break, driven by elevated temperatures, warmer soils and the resulting increase in root activity. No frost damage was reported.

Cumulative monthly evapotranspiration (ET ₀ ) (Oct 2025 –Feb 2026)

100 120 140 160

0 20 40 60 80

Evapotranspiration (mm)

Oct 2025

Nov 2025

Dec 2025 Long -term average ET ₀

Jan 2026

Feb 2026

ET ₀

Figure KK 1. Monthly values of evapotranspiration (ET O ) from October 2025 to February 2026 compared with the long term average, as measured at the Derdeheuwel weather station.

VINPRO TECHNICAL HARVEST REPORT 2026 27

Photo KK 2. An example of Aspergillus rot, which was prevalent during this season.

Production trends Production of early cultivars, particularly Chenin Blanc and Sauvignon Blanc, was excellent, while the production of later cultivars was similar to or slightly higher than in the previous season. The heavy rainfall in February led to rot-related challenges and notable crop losses, while also providing significant relief for producers. A heatwave occurred in mid-March, which caused a rapid increase in sugar levels in the grapes, and consequently all remaining red cultivars reached harvest readiness simultaneously. The Ladismith area reported substantial crop losses due to low rainfall and insufficient irrigation water.

Photo KK 1. Small, loosely set Colombar bunch illustrating the impact of limited irrigation water availability.

General remarks

Canopies and grapes were initially very healthy due to the exceptionally low rainfall during the growing season, with only 25% of the normal

rainfall recorded from September to the end of January. However, the situation changed markedly following heavy rainfall in early February. Botrytis rot, sour rot and Aspergillus presented significant challenges after the rain, particularly in Chenin Blanc and Sauvignon Blanc vineyards. The red cultivars, specifically Muskadel and Colombar, withstood the wet conditions well.

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Grape and wine quality

Summary The 2025–2026 season will be remem bered for an exceptionally dry growing season with unprecedented low rainfall. Throughout the season, grapes and canopies remained healthy, and good production and quality were expected. However, the heavy rainfall in February significantly altered the situation, and winemakers and producers were required to contend with several challenges, particularly in relation to rot management. This rainfall did, however, provide essential relief for producers who were under considerable pressure with respect to irrigation water. Red wines show strong promise of excellent quality, with good colour development.

Following the heavy rainfall, rot related issues led to challenges in the cellar, particularly for early white cultivars. Additional attention had

to be given to the juice from these grapes to ensure good wine quality. Acid analyses were within the normal range, although pH levels were relatively low for the Klein Karoo region. The red cultivars withstood the rainfall well, and excellent quality is expected. Record Chenin Blanc crop would have been achieved if not for the rain and rot; SN24 held up well. – Karl du Toit, Producer, Montagu Winery “

KLEIN-KAROO-VINEYARD

Hennie Visser | 083 455 5193 | henniev@vinpro.co.za

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Northern Cape NORTHERN CAPE REGION

Northern Cape

16%

3%

Colombar Chenin Blanc Villard Blanc Cabernet Sauvignon

5% 4%

TOP 5 CULTIVARS

43%

Shiraz Other

29%

ORANGE RIVER CELLARS

TOTAL HECTARES 2 361 UPROOTINGS IN 2025 27 | PLANTINGS IN 2025 7

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Climatic and viticultural trends

favourable and moderate spring temperatures. Thereafter, véraison in December was uniform. Most cultivars ripened earlier until the onset of rainfall during harvest, after which a delay in sugar accumulation was observed due to cooler and wetter conditions. The intake and ripening sequence of cultivars was at times altered, reflecting the influence of localised rainfall events and variability in sugar accumulation. General remarks interventions, disease pressure remained high and the timing and effectiveness of applications were critical. Two significant hail events occurred on 9 November 2025 and 1 December 2025, during which vineyard blocks in Groblershoop and Kanoneiland sustained damage ranging from 5% to 70%. Fortunately, due to high humidity and light wind conditions during these low temperature events, accompanied frost damage was limited. Rainfall occurred regularly in November and December, and Vineyard diseases were anticipated due to the forecast wet La Niña weather pattern. Although most producers increased crop protection

Vineyards exhibited uniform and strong bud break from 2 September 2025 (with the majority around 17 September), due to a favourable

post-harvest period during which carbohydrate reserves were well replenished. Owing to favourable winter conditions, the use of dormancy-breaking agents was kept to a minimum. Following an initial cold period around 12 May, which promoted winter dormancy, complete leaf fall was achieved by the first week of June. Although winter rainfall is not typical for this region, between 16 mm in Augrabies and 71 mm in Kanoneiland was recorded. Total rainfall for the winter and growing season (1 May to 31 December 2025) was, however, above average, with approximately 215 mm recorded for the region over this period. Consequently, vegetative vigour was particularly strong, with shoot lengths exceeding 90 cm observed by flowering (15 October 2026). In a region where temperature extremes often negatively affect reproductive development, flowering and fruit set were promising across wine grape cultivars this season, owing to

Rainfall, maximum and minimum temperatures (1 Aug 2025–31 Mar 2026)

45

40

35

30

25

20

15

10

Temperature (°C) and rainfall (mm)

5

0

2025/08/01 2025/09/01 2025/10/01 2025/11/01 2025/12/01 2026/01/01 2026/02/01 2026/03/01

Rainfall mm

Max temp. (°C)

Min temp. (°C)

Figure NK 1. Daily maximum and minimum temperatures and rainfall from 1 August 2025 to 31 March 2026, as measured at the Kanoneiland weather station.

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in excess from late February. This contributed to the occurrence of powdery mildew in early December and downy mildew and rot during the ripening period. Seasonal vegetative growth was optimal, although leaf loss was

recorded in blocks that did not receive adequate preventative fungal protection, particularly later in the season or where frequent rainfall events hindered effective management.

Photo NK 1. Hail damage in a Colombar vineyard in Kanoneiland following a hail event in December 2025.

Grape and wine quality

Production trends The onset of the harvest was approximately six days later than in the previous season, with the first Chenin Blanc grapes received on 14 January 2026. The later start to harvest, combined with accelerated ripening of mid- and late-season cultivars, resulted in a concentration of crop intake, and cellars were therefore required to operate at full capacity (>800 tonnes/ day) for 29 consecutive days to keep pace. Following the record yields of the previous year, production in the 2026 season was lower, primarily due to sanitary challenges after the heavy rainfall in February, followed by berry dehydration during extremely high temperatures in early March.

Grape analyses were favourable, with above-average sugar levels for both white and red cultivars. Initially, acid analyses and pH levels

were within acceptable ranges; however, acidity declined sharply as the season progressed, which necessitated adjustments in the cellar. Due to pressure on fermentation capacity, winemakers were required to carefully manage operations, particularly to optimise colour extraction. Similarly, they had to work strategically to keep lots separate in order to ensure quality in the presence of sanitary challenges in affected vineyard blocks. Certain blocks that had been pre identified for premium wine production did not disappoint. The young wines show strong character, with fresh and fruit-forward attributes coming to the fore.

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Summary It was a good, average season for the region, with several familiar challenges, including rainfall during the harvest period and instances of late frost, hail and heatwaves. A notable feature of the season was the moderate spring conditions, which brought the ripening windows of early and late cultivars closer together. This had a positive impact on wine quality, as grapes were received earlier, thereby largely avoiding the effects of rainfall that commenced in late February and the impact of associated downy mildew challenges. For grapes received thereafter, careful selection and separate processing were critical to limit the impact of Botrytis rot. Expected wine quality for this vintage ranges from average to excellent, with early intakes in particular producing exceptional young wines.

Photo NK 2. Good production and vineyard health in Colombar prior to the rainfall during the harvest period.

One thing is certain: we work with very high-quality grapes in the Northern Cape. If we were able to process them on a smaller scale, the premium for the effort invested would certainly be reflected in the wine. – Hennie Huskisson, Winemaker, OWK “

LANDZICHT

Natasja Combrink | 072 658 6903 | natasja@owk.co.za

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Olifants River OLIFANTS RIVER REGION

23%

31%

Chenin Blanc Colombar Sauvignon Blanc Pinotage

TOP 5 CULTIVARS

5%

6%

Shiraz Other

9%

26%

TOTAL HECTARES 8 238 UPROOTINGS IN 2025 355 | PLANTINGS IN 2025 265

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Climatic and viticultural trends

Bud break timing in the region was normal and comparable to long-term trends. Producers who pruned prematurely and applied dormancy-breaking agents indiscriminately reported poorer bud break. Those who waited for sufficient accumulation of chill units were rewarded with good and uniform bud break in their vineyards, which in turn resulted in improved crop expectations. During the 2025–2026 growing season, both maximum and minimum temperatures were noticeably higher compared with the 2024– 2025 season, resulting in higher average monthly temperatures. Elevated temperatures stimulated both vegetative and reproductive growth in vineyards, although not to the same extent as observed in other parts of the Boland. The timing of véraison and the first grape deliveries to the cellar was consistent with the previous year’s dates. Weather conditions in January and February were moderate, with the first significant heatwave recorded in March. During the eight-day heatwave, temperatures above 41 °C were recorded for five consecutive days, which is unprecedented for this area. This placed additional pressure on cellars to receive grapes timeously in order to prevent excessive sugar accumulation and weight loss.

The Olifants River region’s rainfall season commenced late, with only 3 mm recorded on 10 May 2025. The irrigation canal was out of operation

from 28 April to 12 May, during which producers indicated that soils had dried out considerably. From 12 May, the region experienced warm, dry easterly wind conditions that promoted leaf fall. The first effective rainfall was only recorded on 6 June, accompanied by significant cold conditions and snowfall on the Ceres and Worcester mountains. Thereafter, the region experienced good cold conditions, with frost and snow recorded on the mornings of 14 and 15 July (Figure OL 1) . Despite favourable conditions for chill accumulation, a brief warm period occurred during the week of 21 July, although this did not significantly offset the high levels of chill unit accumulation. On 1 August, the Department of Water and Sanitation opened the sluices of the Clanwilliam Dam, lowering the dam level to 75% capacity to allow construction work on the dam wall to continue. The dam level gradually increased over the course of the winter to 95%, where it was maintained. Consequently, producers received a reduced allocation of irrigation water for the season.

0 100 200 300 400 500 600 700 800 900 2024-06-01 2024-06-15 2024-06-29 2024-07-13 2024-07-27 2024-08-10 2024-08-24 Chill units (Utah model) Accumulation of chill units (1 Jun–31 Aug: 2024 vs 2025) Chill units (Utah model), 2024 Chill units (Utah model), 2025

Figure OL 1. Year-on-year comparison of chill unit accumulation (2024 vs. 2025), Vredendal, Olifants River.

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General remarks

The season progressed smoothly, with favourable weather conditions and low disease pressure prevailing until November. Producers consequently adjusted their fungicide programmes to reduce the number of spray applications. However, December, January and March experienced more humid mornings, together with light rainfall during the harvest period (Figure OL 3) . This led to a significant increase in Aspergillus incidence in Chenin Blanc vineyards in the area, with sour rot also becoming problematic later in the season. Notable progress was, however, achieved with the Fruit Fly Baiting Project, which resulted in late Colombar and Hanepoot grapes remaining green and healthy until the heatwave of 8 March.

Photo OL 1. Colombar bunches showing good fruit set.

Photo OL 2. Botrytis rot on Sauvignon Blanc developing into noble rot.

Leaf wetness index (2024 –2025 vs 2025–2026)

30000

25000

20000

15000

10000

5000

0

Sep

Oct

Nov

Dec

Jan

Feb

Mar

Minutes 2025–2026 Minutes 2024–2025

Total leaf wetness duration (minutes)

Figure OL 2. Year-on-year comparison of total leaf wetness duration (minutes) per month (2024–2025 vs. 2025–2026), Vredendal, Olifants River.

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