Chablis Wine - Climate and Geography

Climate and Geography

Located in northeast France, the Chablis region is considered the northernmost extension of the Burgundy wine region but it is separated from the Côte d'Or by the Morvan hills, with the main Burgundian winemaking town of Beaune located more than 62 miles (100 km) away. This makes the region of Chablis relatively isolated from other winemaking regions with the southern vineyards of the Champagne in the Aube department being the closest winemaking neighbor. Historically Chablis was once considered part of the Champagne province, and the two region share many climatic similarities. Chablis' far northern location puts it at the extreme edge of sustainable viticulture. The region has a semi-continental climate with no maritime influence that far inland. Summertime temperature during the peak growing season can get very hot and wintertime can be long, cold and harsh, with frost condition lasting well into Spring-from March to early May. The area can experience dramatic vintage variation in both quality and quantity due to climatic conditions, particularly the threat of spring frost. Years that experience too much rain and low temperature tend to produce wines excessively high in acidity and fruit that is too lean to support it. Vintages that are exceedingly warm tend to produce fat, flabby wines that are too low in acidity.

The region of Chablis lies on the eastern edge of the Paris Basin. The region's oldest soil dates back to the Upper Jurassic age, over 180 million years ago and includes a particular vineyard soil type known as argilo-calcaire. This same Kimmeridge clay is found across the English Channel in Dorset and is a composition of limestone, clay and tiny fossilized oyster shells. All of Chablis' Grand Cru vineyards and Premier Cru vineyards are planted on primarily Kimmeridgean soil which imparts a distinctively mineral, flinty note to the wines. Other areas, particularly the vast majority of Petit Chablis vineyards, are planted on slightly younger Portlandian soil-a limestone based soil of similar structure. The crusty limestone-based soil of the region give the landscape a chalky white appearance similar to some areas of Champagne and Sancerre.