Climate by region
Syrah / Shiraz
Also listed as Syrah, Shiraz
Syrah and Shiraz are the same variety; the mapped regions range from cool northern Rhône conditions to much hotter Australian interiors.
Regional figures use 1991–2020 from the combined regional record · updated through Sep 13, 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 |
|---|---|---|---|---|---|---|---|
| MendozaArgentina | Sep 1–Apr 30 | 16.3°C | 1599 GDD | 698.3 mm | 0.1 | 336.0 mm | Sep 12, 2026 |
| 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 |
| Hunter ValleyAustralia | Sep 1–Apr 30 | 20.4°C | 2529 GDD | 617.6 mm | 12.9 | 278.7 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 | Sep 13, 2026 |
| McLaren ValeAustralia | Sep 1–Apr 30 | 17.3°C | 1778 GDD | 308.0 mm | 2.2 | 95.2 mm | Aug 20, 2026 |
| Maipo ValleyChile | Sep 1–Apr 30 | 16.5°C | 1596 GDD | 216.3 mm | 0.0 | 56.7 mm | Sep 12, 2026 |
| Languedoc, Roussillon & ProvenceFrance | Mar 15–Oct 31 | 17.3°C | 1703 GDD | 468.4 mm | 0.0 | 201.0 mm | Aug 20, 2026 |
| Rhône ValleyFrance | Mar 15–Oct 31 | 19.0°C | 2083 GDD | 492.0 mm | 3.2 | 233.8 mm | Aug 20, 2026 |
| StellenboschSouth Africa | Sep 1–Apr 30 | 18.4°C | 2023 GDD | 329.4 mm | 0.2 | 98.1 mm | Sep 13, 2026 |
| CataloniaSpain | Mar 15–Oct 31 | 18.9°C | 2072 GDD | 449.7 mm | 0.4 | 202.8 mm | Aug 20, 2026 |
| Southeast SpainSpain | Mar 15–Oct 31 | 20.5°C | 2424 GDD | 210.2 mm | 7.4 | 86.2 mm | Aug 20, 2026 |
| Columbia GorgeUnited States | Apr 1–Oct 31 | 14.5°C | 1099 GDD | 324.4 mm | 13.0 | 126.3 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 |
| 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
- Australian Wine Research Institute: heatwaves and their effects on grapevines reviewed 2026-08-14
- UC Agriculture and Natural Resources: vineyard water demand, evapotranspiration, and vine water stress reviewed 2026-08-14
- VIVC cultivar passport: Syrah reviewed 2026-08-11
Search recognizes the alternate names listed above.