Extreme Heat Threatens French Wine Production, Accelerating Grape Harvest

France, the world's second-largest wine producer, is facing significant threats to its grape harvest due to extreme heat and drought. Record-breaking heatwaves in late June, followed by sustained high temperatures and dry weather, have hampered grape development and damaged younger vines in key regions like Champagne, Bordeaux, and Burgundy. Producers are concerned about water scarcity, with little to no rain predicted in major wine-producing areas before July 14th, extending a drought that has lasted over three weeks in many locations. This heat stress is causing the potential yield to diminish under the sun, according to Laurent Delaunay, president of the Burgundy wine industry association (BIVB). In Champagne, the harvest is expected to begin around August 15th, nearly a month earlier than in previous decades, potentially reducing grape production by approximately 10% compared to last year. Maxime Toubart, president of the Champagne winegrowers' union, noted that while soil moisture from a wet winter provided some initial buffer, the grapes are no longer increasing in size. Although a significant drop in production is anticipated in Bordeaux and Burgundy, producers suggest that wine quality may not be necessarily impacted. However, the heat and drought can lead to higher sugar levels in grapes, potentially altering the flavor and alcohol content of the wine. Early harvests are also expected in Bordeaux for sparkling crémant wines in the first week of August, and in Burgundy around August 20th.