France's historic June heatwave is set to ease across most of the country from Sunday, June 28, as Atlantic air pushes out the hot Saharan air mass that has driven days of exceptional temperatures. The change brings relief to much of western and central France but also triggers severe thunderstorms. The heatwave, one of the most intense June events on record, saw temperatures widely reaching 35°C to 40°C, placing emergency services under strain with 1,000 more deaths than usual recorded between Wednesday and Saturday.