Climate by region
Cabernet Sauvignon
Cabernet Sauvignon usually needs a warm growing season and often ripens late, so periods of extreme heat and rain near harvest both deserve attention.
Regional figures use 1991–2020 from the combined regional record · updated through Aug 20, 2026.
Climate by region
1991–2020 averages calculated from complete combined regional records.
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| Region | Growing season | Mean temperature | GDD | Rain | Hot days | Harvest rain | Last updated |
|---|---|---|---|---|---|---|---|
| Barossa, Eden & Clare ValleysAustralia | Sep 1–Apr 30 | 18.2°C | 1989 GDD | 249.9 mm | 16.4 | 73.3 mm | Aug 20, 2026 |
| CoonawarraAustralia | Sep 1–Apr 30 | 16.2°C | 1518 GDD | 306.3 mm | 11.7 | 85.4 mm | Aug 20, 2026 |
| Heathcote & RutherglenAustralia | Sep 1–Apr 30 | 17.6°C | 1856 GDD | 357.8 mm | 13.1 | 113.5 mm | Aug 20, 2026 |
| Margaret River & Great SouthernAustralia | Sep 1–Apr 30 | 17.4°C | 1801 GDD | 285.8 mm | 3.1 | 93.8 mm | Aug 20, 2026 |
| McLaren ValeAustralia | Sep 1–Apr 30 | 17.3°C | 1778 GDD | 308.0 mm | 2.2 | 95.2 mm | Aug 20, 2026 |
| Yarra Valley & Mornington PeninsulaAustralia | Sep 1–Apr 30 | 16.1°C | 1485 GDD | 549.2 mm | 3.3 | 175.3 mm | Aug 20, 2026 |
| BordeauxFrance | Apr 1–Oct 31 | 18.0°C | 1718 GDD | 455.4 mm | 2.5 | 189.6 mm | Jul 15, 2026 |
| TuscanyItaly | Apr 1–Oct 31 | 19.0°C | 1933 GDD | 464.0 mm | 0.3 | 230.9 mm | Aug 20, 2026 |
| Castilla y LeónSpain | Apr 1–Oct 31 | 17.5°C | 1639 GDD | 255.6 mm | 26.4 | 88.5 mm | Aug 20, 2026 |
| LodiUnited States | Mar 15–Oct 31 | 20.6°C | 2449 GDD | 133.8 mm | 27.4 | 29.0 mm | Aug 20, 2026 |
| Napa ValleyUnited States | Mar 15–Nov 15 | 18.4°C | 2086 GDD | 208.8 mm | 13.2 | 71.4 mm | Aug 20, 2026 |
| Paso Robles & Santa Barbara CountyUnited States | Mar 15–Oct 31 | 17.7°C | 1777 GDD | 103.9 mm | 1.1 | 20.4 mm | Aug 20, 2026 |
| Santa Cruz MountainsUnited States | Apr 1–Oct 31 | 17.1°C | 1515 GDD | 121.3 mm | 8.7 | 37.7 mm | Aug 20, 2026 |
| Sonoma & MendocinoUnited States | Apr 1–Oct 31 | 16.9°C | 1495 GDD | 188.1 mm | 11.3 | 58.3 mm | Aug 20, 2026 |
| Southern OregonUnited States | Apr 1–Oct 31 | 15.9°C | 1323 GDD | 309.5 mm | 21.2 | 92.5 mm | Aug 20, 2026 |
| Walla Walla ValleyUnited States | Mar 15–Oct 31 | 15.0°C | 1320 GDD | 268.9 mm | 6.8 | 76.6 mm | Aug 20, 2026 |
| Yakima & Central Columbia BasinUnited States | Mar 15–Oct 31 | 16.4°C | 1586 GDD | 131.7 mm | 14.8 | 38.0 mm | Aug 20, 2026 |
References and alternate names
- Washington State University Viticulture & Enology: growing degree days, base temperature, and season heat accumulation reviewed 2026-08-14
- Australian Wine Research Institute: heatwaves and their effects on grapevines reviewed 2026-08-14
- UC IPM: Botrytis bunch rot, late-season moisture and rot risk reviewed 2026-08-14
- VIVC cultivar passport: Cabernet Sauvignon reviewed 2026-08-11
Search recognizes the alternate names listed above.