Vinpro Technical Harvest Report 2025

Figure CT 2: Daily maximum wind speed during October and November for 2023 and 2024 in Durbanville (Diemersdal), where winds exceeded 18 km/h (physiological threshold value). After 38 years in the wine industry and 20 years at De Grendel, the 2025 vintage is certainly one of the best due to favourable climatic conditions that prevailed throughout the season. The wines boast excellent analyses and balance. – Charles Hopkins, Cellar Master and Winemaker, De Grendel “ 18 28 38 48 58 68 78 88 98 01-Oct 06-Oct 11-Oct 16-Oct 21-Oct 26-Oct 31-Oct 05-Nov 10-Nov 15-Nov 20-Nov Daily maximum windspeed (km/h) Daily maximum windspeed (Durbanville) 2023 Diemersdal - Avg. max. w/spd (km/h) 2024 Diemersdal - Avg. max. w/spd (km/h)

Production trends The 2025 season’s production must be viewed in the context of the record Sauvignon Blanc harvest of the previous year. Sauvignon Blanc accounts for almost 40% of the region’s vineyard area, and producers had anticipated a yield decline of around 10% in 2025 compared to the previous season – a prediction that proved accurate. Nevertheless, all the main cultivars still delivered good average yields, resulting in a slight overall decrease in crop size for 2025. Although the harvest started later than in 2024, the mid- and late-season cultivars were still ready for picking at their usual times.

Photo CT 1: Coastal areas often receive more rain than surrounding areas. Here, a grapevine in Noordhoek displays above-ground rootlets due to extremely high humidity and groundwater saturation in early spring.

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