Season atlas
Growing seasons now
Compare accumulated heat or rain with the 1991–2020 average. Each region follows its own local calendar.
Last Updated September 20, 2026 · Data through September 13, 2026
Heat accumulation
Among eligible open seasons, Marlborough has the largest heat accumulation departure and Mendoza the smallest. These are weather comparisons, not assessments of crop or wine quality.
Scroll the table sideways for values and vertically for more regions.
| Region | Season | Actual | Average | Departure / status |
|---|---|---|---|---|
| MarlboroughNew Zealand | 2026 | 11 GDD | 4 GDD | +167% · rank 1 |
| TasmaniaAustralia | 2026 | 3 GDD | 1 GDD | +89% · rank 2 |
| Heathcote & RutherglenAustralia | 2026 | 25 GDD | 13 GDD | +87% · rank 3 |
| StellenboschSouth Africa | 2026 | 78 GDD | 42 GDD | +86% · rank 4 |
| Loire ValleyFrance | 2026 | 1735 GDD | 1171 GDD | +48% · rank 5 |
| Trentino–Alto AdigeItaly | 2026 | 1208 GDD | 836 GDD | +45% · rank 6 |
| CorsicaFrance | 2026 | 1579 GDD | 1095 GDD | +44% · rank 7 |
| Bierzo & ValdeorrasSpain | 2026 | 1240 GDD | 883 GDD | +40% · rank 8 |
| Hunter ValleyAustralia | 2026 | 86 GDD | 63 GDD | +37% · rank 9 |
| RiojaSpain | 2026 | 1821 GDD | 1334 GDD | +36% · rank 10 |
| MoselGermany | 2026 | 1239 GDD | 908 GDD | +36% · rank 11 |
| BurgundyFrance | 2026 | 1590 GDD | 1183 GDD | +34% · rank 12 |
| Yarra Valley & Mornington PeninsulaAustralia | 2026 | 25 GDD | 19 GDD | +34% · rank 13 |
| Alsace & JuraFrance | 2026 | 1525 GDD | 1142 GDD | +34% · rank 14 |
| Languedoc, Roussillon & ProvenceFrance | 2026 | 1905 GDD | 1435 GDD | +33% · rank 15 |
| Margaret River & Great SouthernAustralia | 2026 | 41 GDD | 31 GDD | +32% · rank 16 |
| WachauAustria | 2026 | 1354 GDD | 1027 GDD | +32% · rank 17 |
| BordeauxFrance | 2026 | 1874 GDD | 1424 GDD | +32% · rank 18 |
| ChampagneFrance | 2026 | 1381 GDD | 1052 GDD | +31% · rank 19 |
| SardiniaItaly | 2026 | 2065 GDD | 1581 GDD | +31% · rank 20 |
| TuscanyItaly | 2026 | 2078 GDD | 1613 GDD | +29% · rank 21 |
| Castilla y LeónSpain | 2026 | 1803 GDD | 1400 GDD | +29% · rank 22 |
| AbruzzoItaly | 2026 | 1670 GDD | 1314 GDD | +27% · rank 23 |
| Rías BaixasSpain | 2026 | 1447 GDD | 1142 GDD | +27% · rank 24 |
| Southern ApenninesItaly | 2026 | 1925 GDD | 1525 GDD | +26% · rank 25 |
| CataloniaSpain | 2026 | 2144 GDD | 1704 GDD | +26% · rank 26 |
| PiedmontItaly | 2026 | 2037 GDD | 1629 GDD | +25% · rank 27 |
| DouroPortugal | 2026 | 1710 GDD | 1390 GDD | +23% · rank 28 |
| Umbria & MarcheItaly | 2026 | 2052 GDD | 1693 GDD | +21% · rank 29 |
| Rhône ValleyFrance | 2026 | 2130 GDD | 1757 GDD | +21% · rank 30 |
| McLaren ValeAustralia | 2026 | 38 GDD | 31 GDD | +21% · rank 31 |
| Central SicilyItaly | 2026 | 2093 GDD | 1728 GDD | +21% · rank 32 |
| EtnaItaly | 2026 | 1746 GDD | 1456 GDD | +20% · rank 33 |
| Po Valley & Northeast ItalyItaly | 2026 | 2124 GDD | 1776 GDD | +20% · rank 34 |
| Paso Robles & Santa Barbara CountyUnited States | 2026 | 1625 GDD | 1393 GDD | +17% · rank 35 |
| Southeast SpainSpain | 2026 | 2322 GDD | 2003 GDD | +16% · rank 36 |
| Yakima & Central Columbia BasinUnited States | 2026 | 1617 GDD | 1411 GDD | +15% · rank 37 |
| PugliaItaly | 2026 | 2257 GDD | 2006 GDD | +12% · rank 38 |
| CoonawarraAustralia | 2026 | 23 GDD | 21 GDD | +11% · rank 39 |
| Columbia GorgeUnited States | 2026 | 1075 GDD | 970 GDD | +11% · rank 40 |
| Adelaide HillsAustralia | 2026 | 38 GDD | 34 GDD | +10% · rank 41 |
| Jerez & SherrySpain | 2026 | 2400 GDD | 2175 GDD | +10% · rank 42 |
| Willamette ValleyUnited States | 2026 | 1179 GDD | 1076 GDD | +10% · rank 43 |
| Barossa, Eden & Clare ValleysAustralia | 2026 | 29 GDD | 26 GDD | +8% · rank 44 |
| Walla Walla ValleyUnited States | 2026 | 1263 GDD | 1176 GDD | +7% · rank 45 |
| LodiUnited States | 2026 | 2127 GDD | 1987 GDD | +7% · rank 46 |
| Southern OregonUnited States | 2026 | 1199 GDD | 1124 GDD | +7% · rank 47 |
| Sonoma & MendocinoUnited States | 2026 | 1402 GDD | 1320 GDD | +6% · rank 48 |
| Maipo ValleyChile | 2026 | 12 GDD | 12 GDD | +6% · rank 49 |
| Santa Cruz MountainsUnited States | 2026 | 1216 GDD | 1165 GDD | +4% · rank 50 |
| Napa ValleyUnited States | 2026 | 1672 GDD | 1620 GDD | +3% · rank 51 |
| MendozaArgentina | 2026 | 4 GDD | 11 GDD | -63% · rank 52 |
Rows are ranked only when the stored daily run is contiguous from season start, the selected normal is complete, data lag is no more than seven days, and the latest upstream refresh is no more than 26 hours old.
Methods and limitations
Season windows
Each region uses its reviewed growing-season calendar and IANA timezone. Open seasons run through the preceding local date, including growing seasons that cross New Year. Completed seasons are moved below the active comparison.
Daily comparison
Actual values use the stored combined regional daily record. Heat is growing degree days above each region’s configured base temperature; rain is cumulative precipitation. Normals use the active 1991–2020 daily climatology. Calculation stops at the first missing selected observation, and a later observation does not bridge that gap.
Percentage departure is (actual minus normal) divided by normal. It is withheld when the normal is absent or zero. Completed-season comparisons require at least 95% daily coverage. A fresh rank does not imply vineyard conditions or wine quality.
Region outlines represent approximate wine-growing and weather-analysis areas, not official boundaries or individual vineyards.