Firefighters work to put out a fire in Biguglia, on the French Mediterranean island of Corsica, on July 24, 2017. [Photo/VCG]

The biggest fire was in the village of Bastidonne, in the Vaucluse region, where fires, intensified by strong winds, consumed some 600 hectares of forest.

About 100 residences were evacuated in the village of Mirabeau and a dozen of horses in a stable were also moved to safer ground.

Part of the A51 highway has been closed temporarily, and public access to several forest areas has been suspended, prefecture officials said.

There were also forest fires in Corsica, in the city of Carros close to Nice and in the resort town of Saint-Tropez, authorities said.

A prefecture spokesman said that early Monday evening the fires were not yet under control but the situation was evolving favourably as weather conditions were improving.

Reuters