Vintage weather atlas
2005 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 |
|---|---|---|---|---|
| DouroPortugal | +0.9°C | +165 GDD | -88 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. |
| Hunter ValleyAustralia | +0.8°C | +189 GDD | -210 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| Loire ValleyFrance | +0.7°C | +139 GDD | -100 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. |
| ChampagneFrance | +0.7°C | +109 GDD | -46 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Castilla y LeónSpain | +0.7°C | +134 GDD | -51 mm | Repeated hot days can speed ripening and put vines under stress. A freeze after budbreak can damage new growth and reduce the crop. |
| Jerez & SherrySpain | +0.7°C | +157 GDD | -120 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| BordeauxFrance | +0.7°C | +140 GDD | -144 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. |
| Bierzo & ValdeorrasSpain | +0.6°C | +98 GDD | -62 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| MoselGermany | +0.5°C | +39 GDD | -51 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| RiojaSpain | +0.4°C | +85 GDD | -36 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Yarra Valley & Mornington PeninsulaAustralia | +0.4°C | +84 GDD | -8 mm | No single weather pattern stands out in the regional record. |
| Rías BaixasSpain | +0.3°C | +64 GDD | -98 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. |
| Southeast SpainSpain | +0.3°C | +75 GDD | -88 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. |
| MarlboroughNew Zealand | +0.3°C | +55 GDD | -118 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| Rhône ValleyFrance | +0.3°C | +71 GDD | -70 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. |
| CataloniaSpain | +0.3°C | +68 GDD | -30 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Languedoc, Roussillon & ProvenceFrance | +0.3°C | +49 GDD | +17 mm | 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. |
| Alsace & JuraFrance | +0.3°C | +15 GDD | -46 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| BurgundyFrance | +0.2°C | +33 GDD | -73 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. |
| CorsicaFrance | +0.2°C | +25 GDD | -57 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Walla Walla ValleyUnited States | +0.1°C | -12 GDD | +19 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Yakima & Central Columbia BasinUnited States | +0.1°C | -3 GDD | +3 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| PiedmontItaly | +0.1°C | +3 GDD | -60 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Barossa, Eden & Clare ValleysAustralia | +0.0°C | +5 GDD | +109 mm | Frequent rain can mean more canopy growth and more disease pressure. |
| McLaren ValeAustralia | +0.0°C | +4 GDD | +184 mm | Frequent rain can mean more canopy growth and more disease pressure. |
| MendozaArgentina | +0.0°C | +60 GDD | -181 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. |
| Heathcote & RutherglenAustralia | +0.0°C | +10 GDD | +3 mm | Frost exposure can vary sharply from one site to the next. |
| SardiniaItaly | +0.0°C | -10 GDD | -71 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. |
| Trentino–Alto AdigeItaly | +0.0°C | -22 GDD | -19 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Willamette ValleyUnited States | -0.0°C | -19 GDD | +123 mm | Frequent rain can mean more canopy growth and more disease pressure. |
| TasmaniaAustralia | -0.0°C | -16 GDD | +150 mm | Frequent rain can mean more canopy growth and more disease pressure. Frost exposure can vary sharply from one site to the next. |
| Adelaide HillsAustralia | -0.0°C | -12 GDD | +139 mm | Frequent rain can mean more canopy growth and more disease pressure. |
| CoonawarraAustralia | -0.0°C | -14 GDD | +47 mm | No single weather pattern stands out in the regional record. |
| Columbia GorgeUnited States | -0.1°C | -40 GDD | +38 mm | Frost exposure can vary sharply from one site to the next. |
| Southern OregonUnited States | -0.1°C | -30 GDD | +64 mm | Frost exposure can vary sharply from one site to the next. |
| StellenboschSouth Africa | -0.1°C | -34 GDD | -117 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| Central SicilyItaly | -0.2°C | -50 GDD | +85 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Southern ApenninesItaly | -0.2°C | -65 GDD | -14 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Po Valley & Northeast ItalyItaly | -0.2°C | -72 GDD | -40 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| AbruzzoItaly | -0.2°C | -100 GDD | +9 mm | 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. |
| WachauAustria | -0.3°C | -97 GDD | +24 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| EtnaItaly | -0.3°C | -52 GDD | +175 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. A freeze after budbreak can damage new growth and reduce the crop. |
| PugliaItaly | -0.3°C | -80 GDD | +34 mm | Rain close to harvest can raise rot pressure and shorten the picking window. |
| TuscanyItaly | -0.3°C | -73 GDD | -59 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| LodiUnited States | -0.3°C | -82 GDD | +63 mm | No single weather pattern stands out in the regional record. |
| Umbria & MarcheItaly | -0.5°C | -138 GDD | +65 mm | 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. |
| Napa ValleyUnited States | -0.5°C | -134 GDD | +111 mm | Frequent rain can mean more canopy growth and more disease pressure. |
| Paso Robles & Santa Barbara CountyUnited States | -0.6°C | -132 GDD | +18 mm | No single weather pattern stands out in the regional record. |
| Santa Cruz MountainsUnited States | -0.6°C | -124 GDD | +17 mm | No single weather pattern stands out in the regional record. |
| Maipo ValleyChile | -0.6°C | -122 GDD | -15 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Sonoma & MendocinoUnited States | -1.3°C | -282 GDD | +132 mm | Cool weather can slow ripening and help grapes retain acidity. Frequent rain can mean more canopy growth and more disease pressure. |
| Margaret River & Great SouthernAustralia | -1.4°C | -343 GDD | +52 mm | Cool weather can slow ripening and help grapes retain acidity. |
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.