France Faces Water Strain After One of Its Driest Aprils in Decades

France entered May with one of the driest April readings in more than six decades, a hydrological bulletin released by Eaufrance showed, raising fresh concerns for farmers, vineyard managers and water users as restrictions spread across parts of the country.

The national report, published on May 20, said rainfall in April was nearly 70% below normal, making it the fourth driest April in the 1959-2026 record. The month was also unusually warm, ranking as the third mildest April since 1900, at 2.3 degrees Celsius above the 1991-2020 average.

The dry weather was not evenly distributed. Rainfall deficits exceeded 50% across most of France and topped 75% over a broad northwest swath stretching from the Channel coast to western Lorraine and Burgundy, as well as northern Nouvelle-Aquitaine and the Mediterranean rim through the Alps. After snowfall early in the month in the Pyrenees, conditions were mostly calm and mild, interrupted only by a disturbed spell from April 11 to 13 and a few unstable periods in southern France later in the month.

The lack of rain has already begun to affect soils and groundwater. Surface soils dried out across the country, with especially dry conditions along the Mediterranean coast and in the Alps, where moisture levels returned to near normal after earlier wet periods. In much of western France, soils became drier than usual.

Eaufrance said groundwater recharge remained under pressure because of the shortage of effective rainfall in April. The bulletin described an ongoing drawdown in reactive aquifers, though it added that groundwater levels remained satisfactory for most areas. Some aquifers in parts of Grand Est, Cotentin, Boulonnais and the Massif Central were moderately low.

River flows also reflected the dry spell. In April, most of metropolitan France recorded discharge levels below normal, with ratios between 40% and 80%. More severe and widespread deficits, below 40%, were reported in central France, southwest France and along the Atlantic coast. Near-normal or locally above-normal flows persisted in the southeast, the Alpine ranges, Corsica and some parts of the Pyrenees.

The strain on water resources has already led to restrictions. As of May 12, eight departments were subject to water-use limits beyond simple vigilance alerts, including two departments at crisis level. Six others were under alert or reinforced alert. For comparison, four departments had restrictions at that point in 2025 and four in 2024.

For agriculture, the timing is sensitive. Spring dryness can raise irrigation costs just as crops begin to demand more water. In wine regions, repeated rainfall deficits can reduce soil moisture before flowering and fruit set, increasing pressure on growers who depend on stable water supplies through the growing season.

The bulletin’s figures suggest that while France has not yet reached a nationwide emergency, conditions are deteriorating quickly enough to affect planning for irrigation networks, reservoir management and vineyard operations if dry weather continues into late spring and summer.