France recorded more than 5,700 excess deaths during a historic heat wave that occurred between June 17 and July 2, marking the country's deadliest heat-related toll in more than two decades, according to Public Health France.

During this period, the agency had expected 15,910 deaths but instead registered 21,674, a difference of 5,764 excess deaths, which is 36% higher than anticipated. Temperatures during the heat wave climbed well above 104 degrees Fahrenheit (40 degrees Celsius) in many parts of the country.

Public Health France described the event as "unprecedented," noting its early onset, intensity, and duration, which exposed nearly the entire population to extreme heat. Deaths from all causes increased across hospitals, private homes, and nursing homes.

The agency's analysis, which included individuals aged 15 and older, indicated that mortality began increasing for those aged 45 and above. Adults aged 75 and older accounted for approximately two-thirds of the provisional death toll, with at least 3,719 excess deaths in this age group.

The Paris region was particularly affected, experiencing 1,999 excess deaths, which was over 80% higher than expected without the heat wave. Public Health France stated that the excess mortality linked to a heat wave in 2026 was the highest since 2003, when the National Institute of Health and Medical Research estimated roughly 15,000 more people died than usual for that time of year.

The hottest days of this year's heat wave occurred on June 24 and June 25, with the national average temperature reaching 86 degrees Fahrenheit (30 degrees Celsius). Peak temperatures exceeded 104 degrees Fahrenheit in numerous areas.

Approximately 56% of the excess deaths occurred during or immediately after the most intense period of the heat wave, from June 25 to June 27. Health officials also reported that more than 10,000 excess deaths were recorded across Europe during the peak of the heat wave, though these figures are preliminary and subject to updates.

Funeral directors in Paris reported being overwhelmed by the surge in bodies awaiting burial or cremation, with some mortuaries reaching capacity. The excess mortality estimate encompasses deaths from all causes that occurred during the heat wave and will be refined in the coming weeks. The Associated Press contributed to this report.