Vintage weather atlas
2012 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 |
|---|---|---|---|---|
| AbruzzoItaly | +1.5°C | +297 GDD | -32 mm | Warm weather can speed ripening and leave grapes with less acidity. Frost exposure can vary sharply from one site to the next. |
| Umbria & MarcheItaly | +1.3°C | +289 GDD | -3 mm | Warm weather can speed ripening and leave grapes with less acidity. Repeated hot days can speed ripening and put vines under stress. Rain close to harvest can raise rot pressure and shorten the picking window. |
| PugliaItaly | +1.3°C | +287 GDD | -64 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. |
| Southern ApenninesItaly | +1.1°C | +230 GDD | +46 mm | Warm weather can speed ripening and leave grapes with less acidity. |
| EtnaItaly | +1.0°C | +207 GDD | -226 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| Po Valley & Northeast ItalyItaly | +0.9°C | +203 GDD | +25 mm | Rain close to harvest can raise rot pressure and shorten the picking window. |
| Margaret River & Great SouthernAustralia | +0.9°C | +213 GDD | +21 mm | No single weather pattern stands out in the regional record. |
| Barossa, Eden & Clare ValleysAustralia | +0.8°C | +181 GDD | -109 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| TuscanyItaly | +0.8°C | +161 GDD | +10 mm | No single weather pattern stands out in the regional record. |
| SardiniaItaly | +0.7°C | +144 GDD | +16 mm | Frost exposure can vary sharply from one site to the next. |
| Yarra Valley & Mornington PeninsulaAustralia | +0.7°C | +154 GDD | -149 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| Southeast SpainSpain | +0.7°C | +151 GDD | +4 mm | Repeated hot days can speed ripening and put vines under stress. |
| CorsicaFrance | +0.6°C | +108 GDD | +45 mm | Frost exposure can vary sharply from one site to the next. |
| CataloniaSpain | +0.6°C | +139 GDD | +26 mm | Rain close to harvest can raise rot pressure and shorten the picking window. |
| Adelaide HillsAustralia | +0.6°C | +142 GDD | -110 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| Heathcote & RutherglenAustralia | +0.6°C | +137 GDD | -161 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. |
| CoonawarraAustralia | +0.6°C | +132 GDD | -118 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| Central SicilyItaly | +0.5°C | +111 GDD | +11 mm | No single weather pattern stands out in the regional record. |
| McLaren ValeAustralia | +0.5°C | +116 GDD | -99 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| Languedoc, Roussillon & ProvenceFrance | +0.4°C | +88 GDD | +16 mm | No single weather pattern stands out in the regional record. |
| RiojaSpain | +0.4°C | +96 GDD | +34 mm | No single weather pattern stands out in the regional record. |
| Rhône ValleyFrance | +0.4°C | +89 GDD | +41 mm | No single weather pattern stands out in the regional record. |
| TasmaniaAustralia | +0.3°C | +80 GDD | -72 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. |
| MendozaArgentina | +0.3°C | +35 GDD | -93 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| WachauAustria | +0.3°C | +80 GDD | -64 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Trentino–Alto AdigeItaly | +0.2°C | +97 GDD | +152 mm | Frequent rain can mean more canopy growth and more disease pressure. A freeze after budbreak can damage new growth and reduce the crop. |
| MarlboroughNew Zealand | +0.1°C | +33 GDD | -11 mm | No single weather pattern stands out in the regional record. |
| Walla Walla ValleyUnited States | +0.1°C | +26 GDD | +115 mm | Frequent rain can mean more canopy growth and more disease pressure. A freeze after budbreak can damage new growth and reduce the crop. |
| StellenboschSouth Africa | +0.1°C | +11 GDD | +38 mm | No single weather pattern stands out in the regional record. |
| Hunter ValleyAustralia | +0.0°C | +8 GDD | +45 mm | Rain close to harvest can raise rot pressure and shorten the picking window. |
| Jerez & SherrySpain | +0.0°C | +4 GDD | +87 mm | Rain close to harvest can raise rot pressure and shorten the picking window. |
| PiedmontItaly | +0.0°C | +10 GDD | -3 mm | No single weather pattern stands out in the regional record. |
| Southern OregonUnited States | +0.0°C | +3 GDD | +34 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Columbia GorgeUnited States | -0.0°C | +0 GDD | +21 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Yakima & Central Columbia BasinUnited States | -0.0°C | +5 GDD | +71 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Alsace & JuraFrance | -0.1°C | -1 GDD | +79 mm | Frost exposure can vary sharply from one site to the next. |
| Castilla y LeónSpain | -0.1°C | +16 GDD | +27 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| BurgundyFrance | -0.1°C | -19 GDD | +146 mm | Frequent rain can mean more canopy growth and more disease pressure. Rain close to harvest can raise rot pressure and shorten the picking window. Frost exposure can vary sharply from one site to the next. |
| BordeauxFrance | -0.2°C | -32 GDD | +89 mm | Frost exposure can vary sharply from one site to the next. |
| Santa Cruz MountainsUnited States | -0.2°C | -39 GDD | -3 mm | No single weather pattern stands out in the regional record. |
| Paso Robles & Santa Barbara CountyUnited States | -0.2°C | -43 GDD | +47 mm | No single weather pattern stands out in the regional record. |
| LodiUnited States | -0.3°C | -66 GDD | +37 mm | No single weather pattern stands out in the regional record. |
| DouroPortugal | -0.4°C | -64 GDD | -50 mm | Frost exposure can vary sharply from one site to the next. |
| Loire ValleyFrance | -0.4°C | -79 GDD | +152 mm | Frequent rain can mean more canopy growth and more disease pressure. Rain close to harvest can raise rot pressure and shorten the picking window. Frost exposure can vary sharply from one site to the next. |
| Maipo ValleyChile | -0.4°C | -107 GDD | +9 mm | Frost exposure can vary sharply from one site to the next. |
| Willamette ValleyUnited States | -0.4°C | -64 GDD | +207 mm | Frequent rain can mean more canopy growth and more disease pressure. A freeze after budbreak can damage new growth and reduce the crop. |
| ChampagneFrance | -0.4°C | -67 GDD | +131 mm | Frequent rain can mean more canopy growth and more disease pressure. A freeze after budbreak can damage new growth and reduce the crop. |
| Napa ValleyUnited States | -0.5°C | -110 GDD | +50 mm | No single weather pattern stands out in the regional record. |
| MoselGermany | -0.5°C | -75 GDD | +99 mm | Frequent rain can mean more canopy growth and more disease pressure. A freeze after budbreak can damage new growth and reduce the crop. |
| Bierzo & ValdeorrasSpain | -0.8°C | -78 GDD | +38 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Rías BaixasSpain | -0.9°C | -164 GDD | +41 mm | No single weather pattern stands out in the regional record. |
| Sonoma & MendocinoUnited States | -1.4°C | -288 GDD | -8 mm | Cool weather can slow ripening and help grapes retain acidity. Frost exposure can vary sharply from one site to the next. |
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.