Vintage weather atlas
2026 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 October 31, 2026 · Data through October 28, 2026 · 3 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 |
|---|---|---|---|---|
| BurgundyFrance | +3.3°C | +261 GDD | -286 mm | Warm weather can speed ripening and leave grapes with less acidity. 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. |
| DouroPortugal | +2.0°C | +108 GDD | -131 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. |
| Rías BaixasSpain | +1.9°C | +100 GDD | -300 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. |
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.