Vintage weather atlas
2001 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 |
|---|---|---|---|---|
| Central SicilyItaly | +0.7°C | +141 GDD | -163 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. |
| Napa ValleyUnited States | +0.6°C | +145 GDD | -65 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| Southeast SpainSpain | +0.6°C | +129 GDD | -44 mm | No single weather pattern stands out in the regional record. |
| AbruzzoItaly | +0.6°C | +98 GDD | -253 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. |
| SardiniaItaly | +0.5°C | +113 GDD | -142 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. |
| EtnaItaly | +0.5°C | +114 GDD | -203 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| LodiUnited States | +0.4°C | +98 GDD | -62 mm | 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. |
| PugliaItaly | +0.4°C | +89 GDD | -118 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| Umbria & MarcheItaly | +0.3°C | +59 GDD | -123 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| CorsicaFrance | +0.3°C | +53 GDD | -130 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 | +65 GDD | -72 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| MarlboroughNew Zealand | +0.3°C | +43 GDD | +16 mm | No single weather pattern stands out in the regional record. |
| Southern ApenninesItaly | +0.3°C | +56 GDD | -182 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| Languedoc, Roussillon & ProvenceFrance | +0.2°C | +28 GDD | -54 mm | Frost exposure can vary sharply from one site to the next. |
| PiedmontItaly | +0.1°C | +19 GDD | -112 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. |
| StellenboschSouth Africa | +0.1°C | +22 GDD | +125 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. |
| Rhône ValleyFrance | +0.1°C | +10 GDD | -20 mm | No single weather pattern stands out in the regional record. |
| Jerez & SherrySpain | +0.0°C | +6 GDD | -80 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| Po Valley & Northeast ItalyItaly | +0.0°C | -13 GDD | -51 mm | No single weather pattern stands out in the regional record. |
| Paso Robles & Santa Barbara CountyUnited States | +0.0°C | +4 GDD | -57 mm | No single weather pattern stands out in the regional record. |
| BordeauxFrance | -0.0°C | -3 GDD | -49 mm | No single weather pattern stands out in the regional record. |
| Bierzo & ValdeorrasSpain | -0.1°C | -22 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. |
| Castilla y LeónSpain | -0.1°C | -18 GDD | -71 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. |
| RiojaSpain | -0.1°C | -9 GDD | -92 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| DouroPortugal | -0.1°C | -29 GDD | +11 mm | No single weather pattern stands out in the regional record. |
| Maipo ValleyChile | -0.1°C | -19 GDD | -63 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| Walla Walla ValleyUnited States | -0.1°C | +4 GDD | -8 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Santa Cruz MountainsUnited States | -0.1°C | -19 GDD | -54 mm | No single weather pattern stands out in the regional record. |
| Rías BaixasSpain | -0.1°C | -31 GDD | -4 mm | No single weather pattern stands out in the regional record. |
| Loire ValleyFrance | -0.2°C | -39 GDD | +93 mm | Frequent rain can mean more canopy growth and more disease pressure. Frost exposure can vary sharply from one site to the next. |
| Southern OregonUnited States | -0.2°C | -11 GDD | -93 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. |
| Alsace & JuraFrance | -0.2°C | -44 GDD | +72 mm | Frost exposure can vary sharply from one site to the next. |
| ChampagneFrance | -0.2°C | -48 GDD | +119 mm | Frequent rain can mean more canopy growth and more disease pressure. Frost exposure can vary sharply from one site to the next. |
| MoselGermany | -0.2°C | -30 GDD | +7 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Yakima & Central Columbia BasinUnited States | -0.2°C | -36 GDD | -10 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Trentino–Alto AdigeItaly | -0.3°C | -63 GDD | -16 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| WachauAustria | -0.3°C | -71 GDD | -57 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| TuscanyItaly | -0.3°C | -54 GDD | -46 mm | No single weather pattern stands out in the regional record. |
| Hunter ValleyAustralia | -0.4°C | -96 GDD | -6 mm | Rain close to harvest can raise rot pressure and shorten the picking window. |
| TasmaniaAustralia | -0.5°C | -150 GDD | +32 mm | Frost exposure can vary sharply from one site to the next. |
| Columbia GorgeUnited States | -0.6°C | -76 GDD | +10 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| BurgundyFrance | -0.6°C | -96 GDD | +80 mm | Frost exposure can vary sharply from one site to the next. |
| Willamette ValleyUnited States | -0.7°C | -134 GDD | -59 mm | Frost exposure can vary sharply from one site to the next. |
| Yarra Valley & Mornington PeninsulaAustralia | -0.8°C | -194 GDD | -20 mm | No single weather pattern stands out in the regional record. |
| MendozaArgentina | -0.8°C | -184 GDD | +154 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. |
| Heathcote & RutherglenAustralia | -0.8°C | -213 GDD | -56 mm | No single weather pattern stands out in the regional record. |
| Sonoma & MendocinoUnited States | -0.8°C | -154 GDD | -55 mm | Frost exposure can vary sharply from one site to the next. |
| Margaret River & Great SouthernAustralia | -0.9°C | -217 GDD | +57 mm | No single weather pattern stands out in the regional record. |
| CoonawarraAustralia | -1.1°C | -270 GDD | -1 mm | Cool weather can slow ripening and help grapes retain acidity. |
| McLaren ValeAustralia | -1.1°C | -274 GDD | +33 mm | Cool weather can slow ripening and help grapes retain acidity. |
| Adelaide HillsAustralia | -1.2°C | -303 GDD | +23 mm | Cool weather can slow ripening and help grapes retain acidity. |
| Barossa, Eden & Clare ValleysAustralia | -1.4°C | -336 GDD | +0 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.