Vintage weather atlas
1994 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 |
|---|---|---|---|---|
| Maipo ValleyChile | +0.7°C | +151 GDD | -42 mm | Frost exposure can vary sharply from one site to the next. |
| Walla Walla ValleyUnited States | +0.7°C | +95 GDD | -36 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Yakima & Central Columbia BasinUnited States | +0.6°C | +102 GDD | +4 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| SardiniaItaly | +0.3°C | +88 GDD | -104 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| Columbia GorgeUnited States | +0.3°C | +36 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. |
| PugliaItaly | +0.3°C | +74 GDD | -88 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| AbruzzoItaly | +0.3°C | +53 GDD | -196 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 | +0.3°C | +59 GDD | -68 mm | No single weather pattern stands out in the regional record. |
| MendozaArgentina | +0.3°C | +33 GDD | +2 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Southern ApenninesItaly | +0.2°C | +43 GDD | -89 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| Southeast SpainSpain | +0.2°C | +54 GDD | -34 mm | No single weather pattern stands out in the regional record. |
| Willamette ValleyUnited States | +0.2°C | +28 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. |
| Margaret River & Great SouthernAustralia | +0.1°C | +26 GDD | -103 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| Southern OregonUnited States | +0.1°C | -3 GDD | -101 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 | +0.1°C | +10 GDD | -88 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. |
| BurgundyFrance | +0.0°C | +13 GDD | +23 mm | Frost exposure can vary sharply from one site to the next. |
| CataloniaSpain | +0.0°C | -3 GDD | +22 mm | Rain close to harvest can raise rot pressure and shorten the picking window. |
| Central SicilyItaly | -0.0°C | -19 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. |
| Po Valley & Northeast ItalyItaly | -0.0°C | -15 GDD | -47 mm | No single weather pattern stands out in the regional record. |
| WachauAustria | -0.0°C | +54 GDD | -115 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. |
| MoselGermany | -0.1°C | -8 GDD | +38 mm | Frost exposure can vary sharply from one site to the next. |
| CorsicaFrance | -0.1°C | -4 GDD | -32 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Languedoc, Roussillon & ProvenceFrance | -0.1°C | -14 GDD | +55 mm | Rain close to harvest can raise rot pressure and shorten the picking window. |
| Rhône ValleyFrance | -0.1°C | -17 GDD | +124 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. |
| TuscanyItaly | -0.1°C | -13 GDD | -41 mm | No single weather pattern stands out in the regional record. |
| StellenboschSouth Africa | -0.2°C | -48 GDD | -65 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| Trentino–Alto AdigeItaly | -0.2°C | +19 GDD | -46 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Alsace & JuraFrance | -0.2°C | +4 GDD | +107 mm | Frequent rain can mean more canopy growth and more disease pressure. |
| LodiUnited States | -0.2°C | -45 GDD | -31 mm | No single weather pattern stands out in the regional record. |
| ChampagneFrance | -0.2°C | -15 GDD | +52 mm | Frost exposure can vary sharply from one site to the next. |
| Loire ValleyFrance | -0.3°C | -50 GDD | +90 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. |
| RiojaSpain | -0.3°C | -35 GDD | -20 mm | Frost exposure can vary sharply from one site to the next. |
| Paso Robles & Santa Barbara CountyUnited States | -0.4°C | -93 GDD | -1 mm | No single weather pattern stands out in the regional record. |
| BordeauxFrance | -0.4°C | -74 GDD | +88 mm | No single weather pattern stands out in the regional record. |
| Jerez & SherrySpain | -0.4°C | -101 GDD | -69 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| MarlboroughNew Zealand | -0.5°C | -83 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. |
| Barossa, Eden & Clare ValleysAustralia | -0.5°C | -114 GDD | -25 mm | No single weather pattern stands out in the regional record. |
| McLaren ValeAustralia | -0.5°C | -119 GDD | -28 mm | No single weather pattern stands out in the regional record. |
| CoonawarraAustralia | -0.6°C | -130 GDD | +1 mm | Frost exposure can vary sharply from one site to the next. |
| PiedmontItaly | -0.6°C | -109 GDD | +61 mm | Rain close to harvest can raise rot pressure and shorten the picking window. |
| TasmaniaAustralia | -0.6°C | -24 GDD | +34 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| DouroPortugal | -0.6°C | -128 GDD | -37 mm | No single weather pattern stands out in the regional record. |
| Napa ValleyUnited States | -0.6°C | -141 GDD | +33 mm | Rain close to harvest can raise rot pressure and shorten the picking window. |
| Heathcote & RutherglenAustralia | -0.6°C | -132 GDD | -89 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. |
| Adelaide HillsAustralia | -0.6°C | -157 GDD | -27 mm | No single weather pattern stands out in the regional record. |
| Castilla y LeónSpain | -0.7°C | -114 GDD | -40 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Hunter ValleyAustralia | -0.8°C | -184 GDD | -136 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| Bierzo & ValdeorrasSpain | -0.8°C | -105 GDD | -63 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Santa Cruz MountainsUnited States | -0.8°C | -178 GDD | -3 mm | No single weather pattern stands out in the regional record. |
| Yarra Valley & Mornington PeninsulaAustralia | -0.8°C | -174 GDD | +48 mm | Rain close to harvest can raise rot pressure and shorten the picking window. |
| Rías BaixasSpain | -0.9°C | -172 GDD | +112 mm | No single weather pattern stands out in the regional record. |
| Sonoma & MendocinoUnited States | -1.2°C | -262 GDD | -21 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.