Vintage weather atlas
2006 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 |
|---|---|---|---|---|
| Castilla y LeónSpain | +1.1°C | +209 GDD | +23 mm | Warm weather can speed ripening and leave grapes with less acidity. Repeated hot days can speed ripening and put vines under stress. A freeze after budbreak can damage new growth and reduce the crop. |
| ChampagneFrance | +1.1°C | +219 GDD | +22 mm | Warm weather can speed ripening and leave grapes with less acidity. A freeze after budbreak can damage new growth and reduce the crop. |
| Bierzo & ValdeorrasSpain | +1.1°C | +159 GDD | +77 mm | Warm weather can speed ripening and leave grapes with less acidity. 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. |
| Heathcote & RutherglenAustralia | +1.1°C | +251 GDD | -157 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. A freeze after budbreak can damage new growth and reduce the crop. |
| RiojaSpain | +1.1°C | +208 GDD | +6 mm | Warm weather can speed ripening and leave grapes with less acidity. Frost exposure can vary sharply from one site to the next. |
| Loire ValleyFrance | +1.0°C | +212 GDD | +21 mm | Warm weather can speed ripening and leave grapes with less acidity. 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. |
| BordeauxFrance | +1.0°C | +205 GDD | +19 mm | Frost exposure can vary sharply from one site to the next. |
| MoselGermany | +0.9°C | +185 GDD | -12 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Adelaide HillsAustralia | +0.9°C | +213 GDD | -33 mm | No single weather pattern stands out in the regional record. |
| Barossa, Eden & Clare ValleysAustralia | +0.9°C | +200 GDD | +22 mm | Rain close to harvest can raise rot pressure and shorten the picking window. |
| BurgundyFrance | +0.9°C | +147 GDD | -31 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| DouroPortugal | +0.9°C | +156 GDD | +25 mm | Rain close to harvest can raise rot pressure and shorten the picking window. Frost exposure can vary sharply from one site to the next. |
| CataloniaSpain | +0.8°C | +187 GDD | -84 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| Rías BaixasSpain | +0.8°C | +152 GDD | -50 mm | Rain close to harvest can raise rot pressure and shorten the picking window. |
| Alsace & JuraFrance | +0.8°C | +156 GDD | +96 mm | Frequent rain can mean more canopy growth and more disease pressure. A freeze after budbreak can damage new growth and reduce the crop. |
| Rhône ValleyFrance | +0.8°C | +186 GDD | -43 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| CoonawarraAustralia | +0.8°C | +186 GDD | -90 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. |
| Languedoc, Roussillon & ProvenceFrance | +0.8°C | +168 GDD | -116 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. |
| Southeast SpainSpain | +0.8°C | +172 GDD | -29 mm | No single weather pattern stands out in the regional record. |
| Jerez & SherrySpain | +0.8°C | +175 GDD | +78 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. |
| McLaren ValeAustralia | +0.7°C | +169 GDD | -44 mm | No single weather pattern stands out in the regional record. |
| PiedmontItaly | +0.7°C | +127 GDD | -114 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. Rain close to harvest can raise rot pressure and shorten the picking window. Frost exposure can vary sharply from one site to the next. |
| Yarra Valley & Mornington PeninsulaAustralia | +0.6°C | +140 GDD | -247 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| Margaret River & Great SouthernAustralia | +0.5°C | +123 GDD | -69 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| SardiniaItaly | +0.5°C | +111 GDD | -26 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. |
| Columbia GorgeUnited States | +0.5°C | +65 GDD | -109 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. |
| Central SicilyItaly | +0.4°C | +88 GDD | -46 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| EtnaItaly | +0.4°C | +81 GDD | +34 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| CorsicaFrance | +0.4°C | +60 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. |
| Southern OregonUnited States | +0.4°C | +72 GDD | -67 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Trentino–Alto AdigeItaly | +0.4°C | +63 GDD | -209 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. |
| Walla Walla ValleyUnited States | +0.3°C | +68 GDD | -35 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| TuscanyItaly | +0.2°C | +46 GDD | -102 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. |
| WachauAustria | +0.2°C | +4 GDD | +60 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Yakima & Central Columbia BasinUnited States | +0.2°C | +42 GDD | +5 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Po Valley & Northeast ItalyItaly | +0.2°C | +54 GDD | -172 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. |
| Hunter ValleyAustralia | +0.1°C | +34 GDD | -70 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| Willamette ValleyUnited States | +0.1°C | +30 GDD | -150 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. |
| TasmaniaAustralia | +0.1°C | +20 GDD | -125 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 | +0.1°C | -9 GDD | +3 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. |
| StellenboschSouth Africa | +0.0°C | -2 GDD | -1 mm | No single weather pattern stands out in the regional record. |
| MarlboroughNew Zealand | -0.0°C | -27 GDD | -53 mm | No single weather pattern stands out in the regional record. |
| Southern ApenninesItaly | -0.1°C | -28 GDD | -60 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. |
| Umbria & MarcheItaly | -0.1°C | -25 GDD | -78 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. |
| AbruzzoItaly | -0.2°C | -67 GDD | -114 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. |
| Napa ValleyUnited States | -0.2°C | -49 GDD | +136 mm | Frequent rain can mean more canopy growth and more disease pressure. Frost exposure can vary sharply from one site to the next. |
| Paso Robles & Santa Barbara CountyUnited States | -0.2°C | -55 GDD | +89 mm | No single weather pattern stands out in the regional record. |
| Santa Cruz MountainsUnited States | -0.2°C | -56 GDD | +102 mm | Frequent rain can mean more canopy growth and more disease pressure. |
| PugliaItaly | -0.3°C | -63 GDD | +24 mm | No single weather pattern stands out in the regional record. |
| LodiUnited States | -0.3°C | -79 GDD | +91 mm | No single weather pattern stands out in the regional record. |
| Maipo ValleyChile | -0.5°C | -115 GDD | +18 mm | Frost exposure can vary sharply from one site to the next. |
| Sonoma & MendocinoUnited States | -0.9°C | -196 GDD | +69 mm | 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.