Hundreds of firefighters are battling blazes fanned by high winds in more than a dozen areas along the French Riviera. Four firefighters have been injured.

The largest blaze is on the Mediterranean island of Corsica. Residents of the town of Biguglia were evacuated as a blaze spread across 2,000 hectares (5,000 acres) of forest, threatening homes. "The fire is very fierce and heading to urban areas of Biguglia," lieutenant-colonel Michel Bernier, of France's civil defence forces, told AFP.

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Firefighters work to put out a fire in Biguglia, on the French Mediterranean island of CorsicaPascal Pochard-Casabianca/AFP
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Firefighters work to put out a fire in Biguglia, on the French Mediterranean island of CorsicaPascal Pochard-Casabianca/AFP
France drought fires
Police officers gesture as fire rages in Biguglia, CorsicaPascal Pochard-Casabianca/AFP

Elsewhere, several wildfires are raging across the south of France. The village of Mirabeau had to be evacuated as a fire tore through forests around Luberon in the Vaucluse region.

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A fire rages in a forested area behind a house near Mirabeau, southeastern FranceBertrand Langlois/AFP
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Firefighting Canadair aircrafts drop water over a fire in Mirabeau, in the Luberon massif in southeastern FranceBertrand Langlois/AFP

Firefighters are also battling a large blaze in Ramatuelle commune, about 10 kilometres from the popular resort town of Saint-Tropez. Strong winds spread the flames quickly, with the fire having spread more than 200 hectares in the first hour, authorities said.

The head of the command post, Lieutenant-Colonet Michel Dutreux, said the fire was not yet under control. A number of fires in southern France were still active, and the department was struggling to fight many at once, he said.

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People sitting on a beach watch Canadair aircraft dropping water onto a fire in La Croix-Valmer, near Saint-Tropez, southern FranceValery Hache/AFP
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Smoke billows during a forest fire in La Croix-Valmer, near Saint-TropezValery Hache/AFP

Several homes had to be evacuated in Carros, just north of Nice, as another fire burned buildings and vehicles.

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A Canadair firefighting aircraft drops water on a wildfire raging in a forest in Carros, near NiceEric Gaillard/Reuters
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Flames from a burning wildfire are seen behind homes in Carros, near NiceEric Gaillard/Reuters
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Firefighters work in a house damaged by fire in Carros, southeastern FranceValery Hache/AFP
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A firefighting Canadair aircraft drops water over a fire near Carros, north of NiceValery Hache/AFP
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Vehicles that were destroyed by a burning wildfire are seen near a damaged home in Carros, near NiceEric Gaillard/Reuters
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A helicopter drops water on a wildfire in Carros, north of NiceEric Gaillard/Reuters
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A fire vehicle drives on a road past trees that were destroyed by a burning wildfire in Carros, near NiceEric Gaillard/Reuters
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A man evacuates a horse as smoke from a burning wildfire fills the sky in CarrosEric Gaillard/Reuters
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A firefighters' car drives past a burned road sign indicating the village of CarrosValery Hache/AFP
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People look at smoke billowing over Carros, southeastern FranceValery Hache/AFP
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A man waters the roof of his house in Carros with a garden hose as a wildfire rages nearbyEric Gaillard/Reuters

"It's a very dangerous day," Bernier told AFP. "And the fight is going to be very, very long tonight."

Meanwhile, in Portugal, more than ten villages were evacuated as forest fires rage in the provinces of Castelo Branco and Santarem.