Vintage weather atlas
2025 across wine regions
Compare growing-season heat and rain with the 1991–2020 average. These regional weather records describe the season, not wine quality.
Last Updated August 20, 2026 · Data through July 14, 2026 · 52 of 52 regions
Regional departures
Growing-season values compared with 1991–2020. Rows are ordered warmest to coolest.
Scroll horizontally for all columns and vertically for more regions.
| Region | Temperature | GDD | Rain | Season summary |
|---|---|---|---|---|
| Yakima & Central Columbia BasinUnited States | +1.8°C | +381 GDD | -42 mm | Warm weather can speed ripening and leave grapes with less acidity. Repeated hot days can speed ripening and put vines under stress. Frost exposure can vary sharply from one site to the next. |
| Columbia GorgeUnited States | +1.6°C | +277 GDD | -105 mm | Warm weather can speed ripening and leave grapes with less acidity. Repeated hot days can speed ripening and put vines under stress. Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| Southeast SpainSpain | +1.5°C | +344 GDD | -5 mm | Warm weather can speed ripening and leave grapes with less acidity. Repeated hot days can speed ripening and put vines under stress. |
| Bierzo & ValdeorrasSpain | +1.4°C | +249 GDD | -117 mm | Warm weather can speed ripening and leave grapes with less acidity. Repeated hot days can speed ripening and put vines under stress. Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| Castilla y LeónSpain | +1.3°C | +256 GDD | -21 mm | Warm weather can speed ripening and leave grapes with less acidity. Repeated hot days can speed ripening and put vines under stress. Frost exposure can vary sharply from one site to the next. |
| Jerez & SherrySpain | +1.3°C | +305 GDD | -16 mm | Warm weather can speed ripening and leave grapes with less acidity. Repeated hot days can speed ripening and put vines under stress. |
| Loire ValleyFrance | +1.3°C | +243 GDD | -92 mm | Warm weather can speed ripening and leave grapes with less acidity. Repeated hot days can speed ripening and put vines under stress. Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| CataloniaSpain | +1.3°C | +296 GDD | +30 mm | Warm weather can speed ripening and leave grapes with less acidity. |
| RiojaSpain | +1.3°C | +251 GDD | -37 mm | Warm weather can speed ripening and leave grapes with less acidity. Repeated hot days can speed ripening and put vines under stress. Frost exposure can vary sharply from one site to the next. |
| Languedoc, Roussillon & ProvenceFrance | +1.2°C | +272 GDD | -50 mm | Warm weather can speed ripening and leave grapes with less acidity. |
| Walla Walla ValleyUnited States | +1.1°C | +223 GDD | -59 mm | Warm weather can speed ripening and leave grapes with less acidity. A freeze after budbreak can damage new growth and reduce the crop. |
| SardiniaItaly | +1.1°C | +238 GDD | +16 mm | Warm weather can speed ripening and leave grapes with less acidity. |
| Rías BaixasSpain | +1.1°C | +210 GDD | -141 mm | Warm weather can speed ripening and leave grapes with less acidity. Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| CorsicaFrance | +1.1°C | +195 GDD | +54 mm | Warm weather can speed ripening and leave grapes with less acidity. Frost exposure can vary sharply from one site to the next. |
| Southern ApenninesItaly | +1.1°C | +237 GDD | -55 mm | Warm weather can speed ripening and leave grapes with less acidity. |
| DouroPortugal | +1.1°C | +218 GDD | -44 mm | Warm weather can speed ripening and leave grapes with less acidity. Repeated hot days can speed ripening and put vines under stress. |
| MoselGermany | +1.0°C | +119 GDD | +23 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Central SicilyItaly | +0.9°C | +209 GDD | +13 mm | Repeated hot days can speed ripening and put vines under stress. |
| Hunter ValleyAustralia | +0.9°C | +217 GDD | -254 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| Rhône ValleyFrance | +0.9°C | +203 GDD | +17 mm | Repeated hot days can speed ripening and put vines under stress. Frost exposure can vary sharply from one site to the next. |
| Willamette ValleyUnited States | +0.9°C | +170 GDD | -43 mm | No single weather pattern stands out in the regional record. |
| TuscanyItaly | +0.8°C | +171 GDD | -6 mm | Frost exposure can vary sharply from one site to the next. |
| Umbria & MarcheItaly | +0.8°C | +170 GDD | -7 mm | Frost exposure can vary sharply from one site to the next. |
| AbruzzoItaly | +0.8°C | +158 GDD | +49 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Southern OregonUnited States | +0.8°C | +119 GDD | -88 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. Frost exposure can vary sharply from one site to the next. |
| BordeauxFrance | +0.7°C | +138 GDD | -88 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. Frost exposure can vary sharply from one site to the next. |
| ChampagneFrance | +0.7°C | +91 GDD | +19 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| PugliaItaly | +0.7°C | +150 GDD | -69 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| MendozaArgentina | +0.6°C | +127 GDD | -34 mm | Frost exposure can vary sharply from one site to the next. |
| Trentino–Alto AdigeItaly | +0.6°C | +67 GDD | -58 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Alsace & JuraFrance | +0.5°C | +63 GDD | +77 mm | Repeated hot days can speed ripening and put vines under stress. Rain close to harvest can raise rot pressure and shorten the picking window. A freeze after budbreak can damage new growth and reduce the crop. |
| PiedmontItaly | +0.5°C | +100 GDD | +36 mm | No single weather pattern stands out in the regional record. |
| StellenboschSouth Africa | +0.5°C | +125 GDD | -60 mm | No single weather pattern stands out in the regional record. |
| EtnaItaly | +0.5°C | +103 GDD | -50 mm | No single weather pattern stands out in the regional record. |
| Heathcote & RutherglenAustralia | +0.5°C | +101 GDD | -34 mm | Frost exposure can vary sharply from one site to the next. |
| MarlboroughNew Zealand | +0.5°C | +90 GDD | +123 mm | Frequent rain can mean more canopy growth and more disease pressure. |
| WachauAustria | +0.5°C | +47 GDD | -129 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. A freeze after budbreak can damage new growth and reduce the crop. |
| Maipo ValleyChile | +0.4°C | +96 GDD | -56 mm | Frost exposure can vary sharply from one site to the next. |
| Po Valley & Northeast ItalyItaly | +0.4°C | +90 GDD | +134 mm | Frequent rain can mean more canopy growth and more disease pressure. Frost exposure can vary sharply from one site to the next. |
| BurgundyFrance | +0.3°C | +43 GDD | -19 mm | Repeated hot days can speed ripening and put vines under stress. Rain close to harvest can raise rot pressure and shorten the picking window. A freeze after budbreak can damage new growth and reduce the crop. |
| TasmaniaAustralia | +0.2°C | +44 GDD | -171 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. Frost exposure can vary sharply from one site to the next. |
| Barossa, Eden & Clare ValleysAustralia | +0.2°C | +41 GDD | +0 mm | No single weather pattern stands out in the regional record. |
| Adelaide HillsAustralia | +0.2°C | +40 GDD | +1 mm | No single weather pattern stands out in the regional record. |
| LodiUnited States | +0.2°C | +41 GDD | -37 mm | No single weather pattern stands out in the regional record. |
| McLaren ValeAustralia | +0.1°C | +27 GDD | -14 mm | No single weather pattern stands out in the regional record. |
| Santa Cruz MountainsUnited States | +0.1°C | +24 GDD | -36 mm | No single weather pattern stands out in the regional record. |
| Napa ValleyUnited States | -0.0°C | -9 GDD | -32 mm | No single weather pattern stands out in the regional record. |
| CoonawarraAustralia | -0.0°C | -15 GDD | +56 mm | Frost exposure can vary sharply from one site to the next. |
| Yarra Valley & Mornington PeninsulaAustralia | -0.0°C | -15 GDD | +9 mm | No single weather pattern stands out in the regional record. |
| Paso Robles & Santa Barbara CountyUnited States | -0.2°C | -49 GDD | -34 mm | No single weather pattern stands out in the regional record. |
| Margaret River & Great SouthernAustralia | -0.3°C | -79 GDD | -35 mm | No single weather pattern stands out in the regional record. |
| Sonoma & MendocinoUnited States | -0.7°C | -150 GDD | -37 mm | No single weather pattern stands out in the regional record. |
Methods, limitations, and sources
How this comparison is made
Each row uses the region’s configured growing-season window and only appears when its annual summary passes the shared source, regional-rule, baseline, metric, and 95% window-completeness checks. GDD means growing degree days, a measure of accumulated warmth above each region’s published base temperature.
The map colors show mean-temperature departure from 1991–2020. GDD and rain departures use the same baseline. “Last Updated” is the oldest calculation time among the displayed rows; “Data through” is the oldest source date. This conservative rule prevents a partly refreshed atlas from appearing newer than all of its regions.
Limits
These are regional weather summaries, not vineyard measurements. Region outlines represent approximate wine-growing and weather-analysis areas, not official boundaries or individual vineyards. A regional pattern can hide meaningful differences in elevation, exposure, storms, soils, vineyard practice, and harvest timing. The weather record alone does not determine wine quality.
Source
Weather & Vines combined regional series. Combined records use eligible NOAA GHCN observations where available and ERA5 reanalysis for the regional grid and for locations or dates without eligible station coverage.