Vinpro Technical Harvest Report 2026

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.

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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

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