Vintage weather atlas
2019 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 | +1.2°C | +301 GDD | -111 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. Frost exposure can vary sharply from one site to the next. |
| MendozaArgentina | +1.2°C | +300 GDD | -180 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. |
| WachauAustria | +0.9°C | +177 GDD | -48 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| BurgundyFrance | +0.9°C | +160 GDD | -136 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. Frost exposure can vary sharply from one site to the next. |
| Hunter ValleyAustralia | +0.8°C | +205 GDD | -69 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. Rain close to harvest can raise rot pressure and shorten the picking window. |
| Loire ValleyFrance | +0.8°C | +161 GDD | -43 mm | No single weather pattern stands out in the regional record. |
| CorsicaFrance | +0.8°C | +179 GDD | -20 mm | Frost exposure can vary sharply from one site to the next. |
| Santa Cruz MountainsUnited States | +0.8°C | +168 GDD | -6 mm | No single weather pattern stands out in the regional record. |
| Rhône ValleyFrance | +0.8°C | +165 GDD | -84 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. |
| PiedmontItaly | +0.7°C | +142 GDD | +64 mm | Rain close to harvest can raise rot pressure and shorten the picking window. |
| ChampagneFrance | +0.7°C | +149 GDD | -9 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Trentino–Alto AdigeItaly | +0.7°C | +125 GDD | +88 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Umbria & MarcheItaly | +0.7°C | +142 GDD | -2 mm | No single weather pattern stands out in the regional record. |
| Castilla y LeónSpain | +0.7°C | +134 GDD | +1 mm | Repeated hot days can speed ripening and put vines under stress. Frost exposure can vary sharply from one site to the next. |
| TuscanyItaly | +0.7°C | +137 GDD | +56 mm | No single weather pattern stands out in the regional record. |
| Languedoc, Roussillon & ProvenceFrance | +0.6°C | +139 GDD | -4 mm | Frost exposure can vary sharply from one site to the next. |
| Margaret River & Great SouthernAustralia | +0.6°C | +155 GDD | -83 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| SardiniaItaly | +0.6°C | +131 GDD | -25 mm | No single weather pattern stands out in the regional record. |
| RiojaSpain | +0.6°C | +107 GDD | +27 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Alsace & JuraFrance | +0.5°C | +110 GDD | -30 mm | Frost exposure can vary sharply from one site to the next. |
| AbruzzoItaly | +0.5°C | +100 GDD | +16 mm | Frost exposure can vary sharply from one site to the next. |
| BordeauxFrance | +0.5°C | +107 GDD | -28 mm | No single weather pattern stands out in the regional record. |
| LodiUnited States | +0.5°C | +117 GDD | +21 mm | Repeated hot days can speed ripening and put vines under stress. |
| CataloniaSpain | +0.5°C | +107 GDD | +7 mm | Rain close to harvest can raise rot pressure and shorten the picking window. |
| Po Valley & Northeast ItalyItaly | +0.5°C | +89 GDD | +54 mm | No single weather pattern stands out in the regional record. |
| MoselGermany | +0.5°C | +105 GDD | +4 mm | Frost exposure can vary sharply from one site to the next. |
| Napa ValleyUnited States | +0.4°C | +98 GDD | -31 mm | No single weather pattern stands out in the regional record. |
| Southern ApenninesItaly | +0.4°C | +81 GDD | -35 mm | No single weather pattern stands out in the regional record. |
| PugliaItaly | +0.4°C | +87 GDD | -4 mm | No single weather pattern stands out in the regional record. |
| StellenboschSouth Africa | +0.4°C | +94 GDD | -47 mm | No single weather pattern stands out in the regional record. |
| MarlboroughNew Zealand | +0.3°C | +58 GDD | -56 mm | No single weather pattern stands out in the regional record. |
| Paso Robles & Santa Barbara CountyUnited States | +0.2°C | +52 GDD | -46 mm | No single weather pattern stands out in the regional record. |
| Southeast SpainSpain | +0.2°C | +51 GDD | +136 mm | Repeated hot days can speed ripening and put vines under stress. Frequent rain can mean more canopy growth and more disease pressure. Rain close to harvest can raise rot pressure and shorten the picking window. |
| TasmaniaAustralia | +0.2°C | +26 GDD | -72 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. A freeze after budbreak can damage new growth and reduce the crop. |
| Central SicilyItaly | +0.1°C | +20 GDD | +60 mm | No single weather pattern stands out in the regional record. |
| Bierzo & ValdeorrasSpain | +0.1°C | +42 GDD | -42 mm | Frost exposure can vary sharply from one site to the next. |
| EtnaItaly | +0.1°C | +26 GDD | +59 mm | No single weather pattern stands out in the regional record. |
| DouroPortugal | +0.1°C | +12 GDD | -74 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. |
| Willamette ValleyUnited States | -0.0°C | -22 GDD | -2 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Heathcote & RutherglenAustralia | -0.0°C | -4 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. |
| Adelaide HillsAustralia | -0.1°C | -14 GDD | -26 mm | No single weather pattern stands out in the regional record. |
| Walla Walla ValleyUnited States | -0.1°C | +10 GDD | +25 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Barossa, Eden & Clare ValleysAustralia | -0.1°C | -25 GDD | -65 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| McLaren ValeAustralia | -0.1°C | -27 GDD | -19 mm | No single weather pattern stands out in the regional record. |
| Jerez & SherrySpain | -0.2°C | -49 GDD | -154 mm | Less rain often lowers disease pressure, but vines may depend more on stored soil water or irrigation. |
| Southern OregonUnited States | -0.2°C | -67 GDD | +76 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Yakima & Central Columbia BasinUnited States | -0.2°C | -14 GDD | +5 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| CoonawarraAustralia | -0.2°C | -41 GDD | -36 mm | Frost exposure can vary sharply from one site to the next. |
| Sonoma & MendocinoUnited States | -0.3°C | -60 GDD | +30 mm | No single weather pattern stands out in the regional record. |
| Rías BaixasSpain | -0.3°C | -54 GDD | -59 mm | No single weather pattern stands out in the regional record. |
| Columbia GorgeUnited States | -0.3°C | -54 GDD | -5 mm | A freeze after budbreak can damage new growth and reduce the crop. |
| Yarra Valley & Mornington PeninsulaAustralia | -0.5°C | -114 GDD | +129 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. |
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.