Temperatures could reach record levels in 15 regions of the southwest, with firefighters battling wildfires and thousands forced to evacuate.
Blazes in Spain, Portugal and Greece have forced thousands more to flee.
Record temperatures are also expected in parts of the United Kingdom, which has its first ever red extreme heat warning in place.
Wildfires in France in recent days have forced over twenty four thousand people to flee, with emergency shelters set up for evacuees.
Gironde, a popular tourist region in the southwest, has been hit particularly badly, with firefighters battling to control fires which have destroyed over fourteen thousand hectares of land since last Tuesday.
