Vintage weather atlas
1993 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 |
|---|---|---|---|---|
| StellenboschSouth Africa | +0.5°C | +120 GDD | -132 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| Paso Robles & Santa Barbara CountyUnited States | +0.2°C | +35 GDD | +12 mm | No single weather pattern stands out in the regional record. |
| Santa Cruz MountainsUnited States | +0.1°C | +16 GDD | -36 mm | No single weather pattern stands out in the regional record. |
| Napa ValleyUnited States | +0.1°C | +3 GDD | +14 mm | No single weather pattern stands out in the regional record. |
| LodiUnited States | +0.0°C | +7 GDD | +32 mm | No single weather pattern stands out in the regional record. |
| Southern ApenninesItaly | +0.0°C | +12 GDD | -147 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. |
| EtnaItaly | -0.0°C | -7 GDD | -184 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 | -0.1°C | +0 GDD | -38 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Willamette ValleyUnited States | -0.1°C | -67 GDD | +151 mm | Frequent rain can mean more canopy growth and more disease pressure. |
| PugliaItaly | -0.2°C | -32 GDD | -76 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| Margaret River & Great SouthernAustralia | -0.2°C | -54 GDD | -123 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| AbruzzoItaly | -0.2°C | -27 GDD | -190 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. |
| Umbria & MarcheItaly | -0.2°C | -41 GDD | -124 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. |
| TuscanyItaly | -0.4°C | -78 GDD | +72 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. |
| Po Valley & Northeast ItalyItaly | -0.4°C | -93 GDD | +61 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. |
| SardiniaItaly | -0.4°C | -86 GDD | -84 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. |
| McLaren ValeAustralia | -0.5°C | -125 GDD | +28 mm | No single weather pattern stands out in the regional record. |
| Central SicilyItaly | -0.5°C | -111 GDD | -76 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 | -0.5°C | -181 GDD | +62 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Hunter ValleyAustralia | -0.5°C | -130 GDD | -60 mm | No single weather pattern stands out in the regional record. |
| TasmaniaAustralia | -0.6°C | -122 GDD | +52 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Barossa, Eden & Clare ValleysAustralia | -0.6°C | -140 GDD | -36 mm | No single weather pattern stands out in the regional record. |
| CorsicaFrance | -0.6°C | -108 GDD | -16 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. |
| MendozaArgentina | -0.6°C | -108 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. |
| MarlboroughNew Zealand | -0.7°C | -125 GDD | -40 mm | No single weather pattern stands out in the regional record. |
| CoonawarraAustralia | -0.7°C | -163 GDD | -11 mm | No single weather pattern stands out in the regional record. |
| Columbia GorgeUnited States | -0.7°C | -178 GDD | +46 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Trentino–Alto AdigeItaly | -0.7°C | -137 GDD | +132 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. |
| Yakima & Central Columbia BasinUnited States | -0.7°C | -193 GDD | +25 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| BurgundyFrance | -0.7°C | -151 GDD | +195 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. |
| MoselGermany | -0.7°C | -122 GDD | +43 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| WachauAustria | -0.8°C | -125 GDD | -61 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Adelaide HillsAustralia | -0.8°C | -200 GDD | +17 mm | No single weather pattern stands out in the regional record. |
| ChampagneFrance | -0.8°C | -155 GDD | +48 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. |
| Southern OregonUnited States | -0.8°C | -200 GDD | +142 mm | Frequent rain can mean more canopy growth and more disease pressure. Frost exposure can vary sharply from one site to the next. |
| Alsace & JuraFrance | -0.8°C | -154 GDD | +75 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. |
| Sonoma & MendocinoUnited States | -0.8°C | -185 GDD | +75 mm | No single weather pattern stands out in the regional record. |
| Rhône ValleyFrance | -0.9°C | -197 GDD | +223 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. |
| Yarra Valley & Mornington PeninsulaAustralia | -0.9°C | -218 GDD | +238 mm | Frequent rain can mean more canopy growth and more disease pressure. |
| Languedoc, Roussillon & ProvenceFrance | -0.9°C | -199 GDD | +185 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. |
| PiedmontItaly | -1.0°C | -215 GDD | +208 mm | Cool weather can slow ripening and help grapes retain acidity. Frequent rain can mean more canopy growth and more disease pressure. Rain close to harvest can raise rot pressure and shorten the picking window. |
| Rías BaixasSpain | -1.1°C | -212 GDD | +586 mm | Cool weather can slow ripening and help grapes retain acidity. Frequent rain can mean more canopy growth and more disease pressure. Rain close to harvest can raise rot pressure and shorten the picking window. |
| Southeast SpainSpain | -1.2°C | -277 GDD | -12 mm | Cool weather can slow ripening and help grapes retain acidity. A freeze after budbreak can damage new growth and reduce the crop. |
| BordeauxFrance | -1.2°C | -254 GDD | +221 mm | Cool weather can slow ripening and help grapes retain acidity. Frequent rain can mean more canopy growth and more disease pressure. Rain close to harvest can raise rot pressure and shorten the picking window. |
| Loire ValleyFrance | -1.2°C | -245 GDD | +90 mm | Cool weather can slow ripening and help grapes retain 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. |
| CataloniaSpain | -1.3°C | -299 GDD | +28 mm | Cool weather can slow ripening and help grapes retain acidity. Frost exposure can vary sharply from one site to the next. |
| Heathcote & RutherglenAustralia | -1.3°C | -319 GDD | +187 mm | Cool weather can slow ripening and help grapes retain acidity. Frequent rain can mean more canopy growth and more disease pressure. |
| RiojaSpain | -1.4°C | -292 GDD | +59 mm | Cool weather can slow ripening and help grapes retain acidity. A freeze after budbreak can damage new growth and reduce the crop. |
| DouroPortugal | -1.5°C | -307 GDD | +287 mm | Cool weather can slow ripening and help grapes retain acidity. Frequent rain can mean more canopy growth and more disease pressure. Rain close to harvest can raise rot pressure and shorten the picking window. |
| Jerez & SherrySpain | -1.5°C | -348 GDD | +30 mm | Cool weather can slow ripening and help grapes retain acidity. |
| Bierzo & ValdeorrasSpain | -1.8°C | -286 GDD | +243 mm | Cool weather can slow ripening and help grapes retain acidity. Frequent rain can mean more canopy growth and more disease pressure. Rain close to harvest can raise rot pressure and shorten the picking window. |
| Castilla y LeónSpain | -1.8°C | -364 GDD | +129 mm | Cool weather can slow ripening and help grapes retain acidity. Frequent rain can mean more canopy growth and more disease pressure. Rain close to harvest can raise rot pressure and shorten the picking window. |
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.