Although expected to last the duration of the week, the heatwave will be warmest at the beginning of the week, with temperatures of up to 39C in parts of the south west.
On Tuesday, although such extreme highs are not expected, the warm weather will spread across most of the country, with almost the entirety of France facing temperatures of around 30C or higher.
You can see a map of forecast temperatures below:
Credit: VisActu / The Connexion
The warm temperatures on Monday are being helped in part by cloudless skies and sea winds in the Nouvelle-Aquitaine region pushing the hot air inland.
Except for minute spots in the county, such as the tip of Brittany, and mountains on the Swiss border, all of France is expected to be at least 36C, with some areas reaching 37C.
Temperatures are expected to be slightly lower for the rest of the week, but not fall significantly until at least Sunday, according to Météo France.
