Deaths in France surged 30% during hottest week of record June heatwave

Public Health France said deaths in the country rose by about 29% during the hottest week of a record June heatwave, adding to evidence that extreme heat sharply worsened mortality in late June.

The agency said there were 2,025 additional deaths during the week of June 22-28 compared with the previous week. AP reported the total as 8,973 deaths for June 22-28, versus 6,948 the week before.

The updated figures were published on July 3 and reflect a wider slice of the heatwave than an earlier estimate released by Santé Publique France on June 29. That first estimate, based on June 24-26 data only, had pointed to about 1,000 excess deaths.

Updated mortality tally

The July 3 count is the clearest official picture yet of the human toll from the heatwave, but it is still not the final one. Public Health France has said the tally remains provisional because more death certificates still have to be processed.

That means the June 22-28 figure should be treated as an incomplete estimate rather than a finished total. Officials and health authorities have warned the number may rise as delayed reporting comes in.

Le Monde reported that the earlier June 29 estimate already showed the pattern of vulnerability that would continue into the full-week tally. In that preliminary snapshot, about 85% of the deaths were among people aged 65 and older.

Where the impact was worst

The Paris region saw the steepest week-on-week increase, AP reported, with deaths up nearly 63%.

The agency also reported sharp rises in deaths outside the hospital system. Deaths in private homes rose 91%, deaths in care homes rose 37%, and deaths in hospitals rose nearly 20%.

That breakdown points to the strain heat placed not only on emergency and inpatient care, but also on people living at home and in long-term care settings. The spike in at-home deaths also echoes the earlier June 29 estimate, which Le Monde said showed a 40% increase in deaths at home.

Le Monde said the biggest early increases were seen in Île-de-France, Nouvelle-Aquitaine, Brittany, Centre-Val de Loire, Normandy and Pays de la Loire.

Early warning signs

France’s first official estimate came on June 29, when Santé Publique France reported roughly 1,000 excess deaths based on the first part of the heatwave period. That report covered June 24-26 and was explicitly described as provisional.

By July 3, the agency had extended the picture to the full June 22-28 week, showing a much larger impact than the first partial tally suggested.

The chronology matters because it shows how quickly the mortality burden accumulated as the heatwave continued. The earlier figure was not wrong so much as incomplete, reflecting the lag between deaths occurring and the data being fully compiled.

Why it matters

The figures intensify scrutiny of France’s heat-preparedness systems, especially the capacity of hospitals, care homes and local responders to protect vulnerable people during extreme temperatures.

Emergency plans were activated in hospitals during the heatwave, according to Le Monde’s reporting, underscoring that the health system was already responding while deaths were still being counted.

The latest tally also raises questions about mortuary and funeral capacity in the Paris region, where the mortality jump was steepest and where the strain was likely most visible outside clinical settings.

AP and The Guardian both tied the mortality spike to the record June 2026 heatwave, which brought the hottest days on record in France and added to wider temperature records across Europe.

What comes next

The official total is still likely to move as more certificates are processed, so the July 3 count should be read as a developing benchmark rather than the final word.

Health officials will be watching for a fuller tally from Santé Publique France, and for any sign that the excess-death count materially exceeds the current 2,025 estimate.

The broader question is whether France will respond with new heat-adaptation steps after a week that exposed risks in homes, care homes, hospitals and regional emergency systems all at once.