France’s prolonged heatwave is set to significantly reduce this year’s wine harvest, with growers across the country’s major wine regions warning that weeks of extreme heat and drought are already damaging vines and could also affect grape quality.
Industry groups and producers expect lower yields across key regions including Champagne, Bordeaux and Burgundy after one of France’s hottest starts to summer on record. While the smaller harvest is unlikely to trigger widespread wine shortages because of weak global demand and ample inventories in some regions, premium appellations could face tighter supplies.
The heat comes as France experiences a second consecutive heatwave after temperatures exceeded 40 degrees Celsius (104 degrees Fahrenheit) across parts of the country in late June. Weather forecasts show little meaningful rainfall for many vineyards through mid-July, leaving vines under prolonged water stress during a critical stage of the growing season.
“We can see the potential melting away in the sun,” said Laurent Delaunay, chairman of the Burgundy wine industry association (BIVB). “Our biggest concern isn’t the heat itself, but the lack of water.”
Smaller harvest, quality concerns
Champagne growers currently expect grape production to fall by around 10% compared with last year.
However, Maxime Toubart, president of the Champagne Growers’ Association, said the industry’s extensive reserve wine stocks could help offset part of the decline, meaning final wine production may not fall by the same magnitude.
In Bordeaux and Burgundy, although no official forecasts have yet been released, industry sources broadly expect harvest volumes to decline significantly.
“The impact already looks substantial. We’re expecting production to fall by around 20%, possibly even more,” Ding Youzhen, China sales director of Bel Eden, which owns two Cru Bourgeois estates in the Médoc, told Vino Joy News.
The assessment is shared by AXXANT Fine Wines, which produces wines across several Bordeaux appellations.
“This could be Bordeaux’s hottest year since 2003,” said Zou Hua, the company’s China representative. “Ground temperatures in many vineyards are approaching 50°C.”
“The heat scorches vine leaves, causing them to dry out and die. Combined with the severe lack of rainfall, some estates have even chosen to irrigate their vineyards, despite stepping outside the restrictions imposed by the AOC system, in order to save their vines.”
Beyond reducing yields, Zou warned that extreme heat could fundamentally alter the character of the wines.
“Warmer conditions accelerate grape ripening. Higher alcohol can make young wines feel richer and fuller, but excessive ripeness leads to overly high alcohol levels, lower acidity and ultimately wines that lose their balance.”
Bordeaux-based Chinese wine critic Alexandre Ma echoed those concerns.
“If the heat and drought continue, harvest losses are very likely,” he said. “The berries are already small due to lack of water. If they stop developing altogether, you can end up with grapes that appear ripe but whose phenolic compounds have not fully matured.”
Earlier harvests become the new normal
To minimise the impact of the heat, many French wine regions are preparing to harvest even earlier this year.
Champagne is expected to begin picking around 15 August, roughly one month earlier than was typical two or three decades ago and potentially the earliest harvest on record.
Grapes destined for Crémant production in Bordeaux could be harvested as early as the beginning of August, while Burgundy may also begin harvesting around 20 August.
Earlier harvests have become one of the defining adaptations to climate change in French viticulture.
Over the past decade, warmer spring temperatures have steadily advanced the vine’s entire growing cycle—from budburst and flowering to véraison and ripening. Harvests that once routinely began in September are increasingly starting in mid-August.
Ma noted that irrigation has now been authorised in Pauillac, giving growers another tool to mitigate the heat.
“If vineyard management is handled well and the right measures are taken, quality may still be preserved,” he said. “But until we actually taste the grapes, everything remains uncertain.”
Will a smaller harvest lead to shortages?
More important than lower production is the question now facing the market: will this year’s reduced harvest push up prices or create supply shortages?
The answer depends on the region.
According to Zou, Bordeaux’s smaller crop is unlikely to materially affect market supply.
“Across Bordeaux, apart from a handful of prestigious estates and limited-production wines, the market is generally oversupplied,” she said. “Many Chinese importers are still carrying excess inventory from previous years, particularly for entry-level Bordeaux, where prices have in some cases fallen below import cost.”
“As a result, lower production won’t create supply problems. The bigger impact of the heat and drought is that certain categories—such as Sauternes and dry white wines—could see much sharper declines, or even lose an entire vintage.”
Burgundy presents a far more complex picture.
A senior executive at a major Burgundy wine group, who requested anonymity, told Vino Joy News that the region cannot be treated as a single market.
“Burgundy is highly segmented. Premier Cru and Grand Cru wines have remained structurally undersupplied for years, particularly white wines from the Côte de Beaune and red wines from the Côte de Nuits.”
“Village wines will inevitably see lower production this year, but experienced importers often look towards appellations such as Mercurey and the Côte Chalonnaise, where quality has improved significantly in recent years while prices remain attractive.”
By grape variety, the source noted that demand for Pinot Noir remains relatively stable, while Chardonnay continues to enjoy exceptionally strong demand, meaning any production shortfall is likely to be felt more acutely in white Burgundy than in reds.
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