French health officials estimate that the June heat wave contributed to more than 5,700 excess deaths, according to preliminary research released on July 22, 2026. The heat wave affected much of France from June 17 to July 2, coinciding with 21,674 deaths from all causes in the impacted regions, compared to an estimated 15,910 deaths expected under normal conditions, as reported by Public Health France. The agency noted 5,764 excess deaths, representing a 36% increase in expected mortality, with more than half occurring between June 25 and June 27.
The Paris region experienced the highest impact, recording 1,999 excess deaths, approximately 80% more than expected without the heat wave. Individuals aged 75 and older accounted for nearly two-thirds of the excess deaths, with an estimated 3,719 fatalities. Nearly half of all deaths occurred in hospitals, while about one-third took place at home, with the remainder largely in nursing homes and long-term care facilities.
France recorded its hottest June on record, with a nationwide average temperature of 86 degrees Fahrenheit. Overnight temperatures remained elevated, and daytime highs exceeded 104 degrees Fahrenheit in many areas on June 24 and 25. Public Health France cautioned that these figures are preliminary and will be refined after further analysis later this year. The report indicated that this excess mortality highlights the health impact of the heat exposure across mainland France, although it did not reach the levels observed in 2003. The heat wave was attributed to an 'Omega block,' a weather pattern trapping hot air beneath a persistent high-pressure system. Several European countries, including Britain, Italy, Switzerland, and Spain, also faced extreme temperatures, which disrupted transportation, led to school closures, and prompted the temporary closure of tourist attractions, including the Eiffel Tower.