This site is in beta. Please report problems here.
Display
Climate baseline
Units
Color theme

Season atlas

Growing seasons now

Compare accumulated heat or rain with the 1991–2020 average. Each region follows its own local calendar.

Last Updated October 31, 2026 · Data through October 24, 2026

Measure Heat accumulation Rainfall
Growing degree day departure for active wine-region growing seasons Only complete and current regional comparisons are colored. Blue marks below-average values and rust marks above-average values. The table gives the same values and names unavailable states.
−50% or lower+50% or higher

Heat accumulation

Among eligible open seasons, Tasmania 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.

RegionSeasonActualAverageDeparture / status
TasmaniaAustralia 2026 83 GDD 22 GDD +283% · rank 1
Heathcote & RutherglenAustralia 2026 222 GDD 131 GDD +70% · rank 2
MarlboroughNew Zealand 2026 73 GDD 49 GDD +49% · rank 3
CoonawarraAustralia 2026 197 GDD 138 GDD +43% · rank 4
Yarra Valley & Mornington PeninsulaAustralia 2026 188 GDD 133 GDD +41% · rank 5
MoselGermany 2026 1416 GDD 1006 GDD +41% · rank 6
Barossa, Eden & Clare ValleysAustralia 2026 264 GDD 191 GDD +38% · rank 7
StellenboschSouth Africa 2026 328 GDD 241 GDD +36% · rank 8
WachauAustria 2026 1488 GDD 1119 GDD +33% · rank 9
McLaren ValeAustralia 2026 248 GDD 190 GDD +31% · rank 10
Yakima & Central Columbia BasinUnited States 2026 2004 GDD 1584 GDD +27% · rank 11
Columbia GorgeUnited States 2026 1346 GDD 1098 GDD +23% · rank 12
Maipo ValleyChile 2026 133 GDD 112 GDD +19% · rank 13
Hunter ValleyAustralia 2026 432 GDD 366 GDD +18% · rank 14
Napa ValleyUnited States 2026 2294 GDD 1992 GDD +15% · rank 15
Adelaide HillsAustralia 2026 249 GDD 217 GDD +15% · rank 16
Margaret River & Great SouthernAustralia 2026 208 GDD 185 GDD +12% · rank 17
Willamette ValleyUnited States 2026 1393 GDD 1254 GDD +11% · rank 18
Sonoma & MendocinoUnited States 2026 1808 GDD 1647 GDD +10% · rank 19
Santa Cruz MountainsUnited States 2026 1553 GDD 1478 GDD +5% · rank 20
LodiUnited States 2026 2524 GDD 2406 GDD +5% · rank 21
Walla Walla ValleyUnited States 2026 1376 GDD 1317 GDD +5% · rank 22
Paso Robles & Santa Barbara CountyUnited States 2026 1800 GDD 1737 GDD +4% · rank 23
Southern OregonUnited States 2026 1337 GDD 1316 GDD +2% · rank 24
MendozaArgentina 2026 101 GDD 129 GDD -22% · rank 25

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.

Between seasons (27)

These regions have finished their most recent configured growing season. Comparisons appear only when at least 95% of expected days are present.

Scroll the table sideways for comparison and coverage.

RegionSeasonComparisonCoverage
AbruzzoItaly2026+25% heat97%
Alsace & JuraFrance2026+34% heat97%
Bierzo & ValdeorrasSpain2026+44% heat97%
BordeauxFrance2026+31% heat97%
BurgundyFrance2026+37% heat100%
Castilla y LeónSpain2026+28% heat97%
CataloniaSpain2026+23% heat97%
Central SicilyItaly2026+19% heat97%
ChampagneFrance2026+32% heat97%
CorsicaFrance2026+45% heat97%
DouroPortugal2026+25% heat100%
EtnaItaly2026+15% heat97%
Jerez & SherrySpain2026+16% heat97%
Languedoc, Roussillon & ProvenceFrance2026+31% heat97%
Loire ValleyFrance2026+46% heat97%
PiedmontItaly2026+27% heat97%
Po Valley & Northeast ItalyItaly2026+21% heat97%
PugliaItaly2026+12% heat97%
Rhône ValleyFrance2026+23% heat97%
Rías BaixasSpain2026+28% heat100%
RiojaSpain2026+34% heat97%
SardiniaItaly2026+29% heat97%
Southeast SpainSpain2026+17% heat97%
Southern ApenninesItaly2026+24% heat97%
Trentino–Alto AdigeItaly2026+50% heat97%
TuscanyItaly2026+29% heat97%
Umbria & MarcheItaly2026+21% heat97%
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.