This year's intense summer heat has led French authorities to relax regulations on champagne, allowing for higher alcohol content, while English sparkling wine producers are anticipating a record harvest. Unusually warm weather has caused grapes to ripen quickly and develop a high sugar content, which converts to alcohol during fermentation.
France's National Origin and Quality Institute has permitted champagne to reach up to 15 percent alcohol by volume, a departure from the previous 13 percent cap. This decision has been met with some controversy, as it deviates from champagne's traditional lighter profile. The grape harvest began earlier than usual on August 6, but the 2026 vintage will not be available until 2028 due to the minimum 15-month aging requirement.
Didier Gimonnet, a third-generation champagne producer, expressed concern that the increased alcohol content might deter consumers. "The idea of champagne at 14 or 15 per cent will put a lot of people off," he told The Times.
Meanwhile, the warmer climate has been beneficial for English sparkling wine producers. Nyetimber, a prominent English winery, is set to begin its earliest harvest on September 14, having planted its first vines in 1988. The company expects to yield nearly 2,500 tons of grapes, producing over 1.5 million bottles of sparkling wine. Head winemaker Cherie Spriggs noted that while late spring frosts and summer drought affected berry size, the hot, sunny weather has bolstered the potential for high-quality wine.
The UK experienced its hottest summer on record, with temperatures reaching a peak of 38.1C on August 13. This favorable weather has led to comparisons between current English conditions and those of the Champagne region decades ago. Several French champagne houses, including Taittinger and Vranken-Pommery, also produce sparkling wine in England.
However, the heat has negatively impacted other agricultural sectors. Provisional data from the Agriculture and Horticulture Development Board suggests this year's barley harvest could be the worst on record, with yields 19 percent below the five-year average. Lisa Hogan, who co-owns Diddly Squat Farm and produces Hawkstone Lager, warned of potential beer shortages, citing that two years of dry weather have diminished both the quantity and quality of barley yields.