Chablis grand cru

What is made here

Wine colours

The only colour the rules allow.

Where it is

Chablis grand cru in France

Latitude: 47.8°–47.8° N
Vineyard altitude: 136 m to 250 m
Delimited vineyard land: 107 ha

Lies within
Chablis, Petit Chablis, Crémant de Bourgogne

Worked out from the boundaries (smallest container first). Uses the delimited parcels where INAO publishes them.

The delimited vineyard parcels themselves, so the shape is patchy: only land within them may grow the wine. Boundary: INAO parcel delimitation (Licence Ouverte); nearby parcels drawn as one block, with less detail for larger appellations. Country outlines: Natural Earth. Dots on the zone map are the vineyard points used for climate.

01 · What the law says

The rules

Limits on grapes, yields, ripeness and ageing that every wine labelled Chablis grand cru must meet.

1 wine in the rules.
Wine	Main grape(s)	Max yield t/ha	Max wine hl/ha	Yield ceiling hl/ha	Grape sugar min. g/l	Grape ripeness min. % pot. alc.	After enrichment max. % alc.	Sugar max. g/l
Chablis Grand Cru	100% Chardonnay	9.5	54	64	178	11	13.5	3

From the official production rules (cahier des charges). Hover a figure to see the clause it comes from. A dash means the rules set no figure, or it is not captured yet.

In the vineyard and cellar: rules for every wine

5,500

Vines per hectare, minimum

Training

Systems allowed

cordon de Royat; taille Guyot simple; taille Guyot double; taille Chablis

Prohibited

Irrigation

02 · Climate fingerprint

The climate

The growing season averages 15.4 °C, intermediate on Gregory Jones's scale, with 1,185 growing degree days (Winkler Ib).

The average year 1991–2020, vineyards at about 216 m

Monthly mean, °CRain, mmGrowing season

Growing-season temperature: 15.4 °C; Intermediate · 15–17 °C (Jones)
Growing degree days: 1,185; Region Ib: 1,111–1,388 degree days
Growing-season rain: 477 mm; Of 856 mm a year
Harvest rain: 144 mm; September–October

Copernicus ERA5-Land monthly averages at 5 vineyard points (Vineyard point 1, 144 m; Vineyard point 2, 267 m; Vineyard point 3, 245 m; Vineyard point 4, 193 m; Vineyard point 5, 232 m), moved to each point's height from the model's terrain. Indices that need daily data are not captured yet. How the climate figures are made.

Closest climates in the database

Picked by the data, not by hand: the profiles nearest on season warmth (counted twice), degree days, rain, ripening-month nights and day–night range. Neighbours within 30 km are left out, as they share the same weather.

1. BierzoVery similarCompared with Chablis grand cru: same season warmth, similar rain.

2. PfalzVery similarCompared with Chablis grand cru: same season warmth, similar rain.

3. ŠobesVery similarCompared with Chablis grand cru: same season warmth, similar rain.

Growing-season temperature

Chablis grand cru

15.4 °C

Bierzo

15.4 °C

Pfalz

15.3 °C

Šobes

15.5 °C

Growing degree days

Chablis grand cru

1,185

Bierzo

1,188

Pfalz

1,173

Šobes

1,211

Growing-season rain

Chablis grand cru

477 mm

Bierzo

445 mm

Pfalz

454 mm

Šobes

465 mm

03 · Year by year

35 vintages

Each column is one growing season: heat above or below the 1991–2020 average, and rain at harvest. Pick a year for the details.

Warmer than averageCooler than averageHarvest rain (Sep–Oct)Average harvest rain, 144 mm

2025

Growing-season temp.
Growing degree days
Harvest rain
Growing-season rain
September nights
Hot days and frosts

Seasons are labelled by harvest year (April–October). Year-to-year changes from ERA5-Land; tested against station records in Alto Adige (r = 0.94 for season temperature at Bolzano). Rain varies more locally, so treat single-season rain with some caution. Vintage ratings, harvest dates and frost or hail events have places in the data model but are not loaded yet.

04 · Where the numbers come from

Sources

A geospatial inventory of regulatory information for wine protected designations of origin in Europe · Candiago et al., Scientific Data 9, 394 (2022); Eurac Research · CC0
Quality wines in Italy and France: a dataset of PDO specifications · figshare 25393261 · CC BY 4.0
ERA5-Land monthly averaged data (reanalysis-era5-land-monthly-means) · Copernicus Climate Change Service (C3S), Climate Data Store · CC BY 4.0 (Copernicus licence)
OpenStreetMap vineyard areas (landuse=vineyard), from Geofabrik country extracts · OpenStreetMap contributors · ODbL 1.0
Copernicus DEM GLO-90 (AWS open data tiles) · European Space Agency / Copernicus · Copernicus DEM licence
Cahier des charges: Chablis grand cru (Cahier des charges de l’appellation d'origine contrôlée Chablis grand cru homologué par l'arrêté du 24 octobre 2024 publié au JORF du 9 novembre 2024 - BO n°7 d) · Ministère de l'Agriculture (Bulletin officiel), as linked by INAO · Official act
Délimitation parcellaire des AOC viticoles de l'INAO · Institut national de l'origine et de la qualité (INAO), via data.gouv.fr · Licence Ouverte / Open Licence (Etalab)
Appellation nesting worked out from boundaries (pipeline/build_nesting.py) · Vinous, from the Eurac PDO boundaries · CC0 (source data)
Climate profiles calculated by Vinous: method

Still to check (3)

Generated from EU reference data: check against the current product specification.
From the specification: Residual sugar may reach 4 g/l when total acidity is at least 4.13 g/l (as tartaric acid). Maximum 14 buds per vine and 10 per square metre; wines aged until at least 15 March of the year after the harvest. The seven climats (Blanchot, Bougros, Grenouilles, Les Clos, Preuses, Valmur, Vaudésir) may follow the name but are not separate products in the register.
National tier (DOC/DOCG) not captured yet; rules extracted from the specification text.