More than 200 reinforcements headed to join the 1,500 firefighters trying to contain the blazes in the Gironde, where flames neared prized vineyards and billowed smoke across the Arcachon ed for its oysters and beaches.
France’s often-temperate Brittany region sweltered with a record 39
Spain, meanwhile, reported a second fatality in two days in its own blazes. The body of a 69-year-old sheep farmer was found Monday in the same hilly area where a 62-year-old firefighter died a day earlier when he was trapped by flames in the northwestern Zamora province. More than 30 forest fires around Spain have forced the evacuation of thousands of people and blackened 220 square kilometers (85 square miles) of forest and scrub.
Passengers on a train through Zamora got a frightening, close look at a blaze, when their train halted in the countryside. Video of the unscheduled – and unnerving – stop showed about a dozen passengers in a railcar becoming alarmed as they looked out of the windows at the flames encroaching on both sides of the track.
Climate scientists say heat waves are more intense, more frequent and longer because of climate change – and coupled with droughts have made wildfires harder to fight. They say climate change will continue to make weather more extreme and wildfires more frequent and destructive.
“Climate change kills,” Spanish Prime Minister Pedro Sanchez said Monday during a visit to the Extremadura region, the site of three major blazes. “It kills people, it kills our ecosystems and biodiversity.”
Teresa Ribera, Spain’s minister for ecological transition, described her country as “literally under fire” as she attended talks on climate change in Berlin.
She warned of “terrifying prospects still for the days to come” – after more than 10 days of temperatures over 40 degrees Celsius (104 degrees Fahrenheit), cooling only moderately at night.
At least 748 heat-related deaths have been reported in the heat wave in Spain and neighboring Portugal, where temperatures reached 47 C (117 F) earlier this month.
The heat wave in Spain was forecast to ease on Tuesday, but the respite will be brief as temperatures rise again on Wednesday, 
especially in the dry western Extremadura region.
In Britain, officials have issued the first-ever extreme heat warning, and the weather service forecast that the record high of 38.7 C (101.7 F), set in 2019, could be shattered.
“Forty-one isn’t off the cards,” said Met Office CEO Penelope Endersby. “We’ve even got some 43s in the model, but we’re hoping it won’t be as high as that.”
3 C (102.7 F) degrees in the port of Brest, surpassing a high of 35.1 C that had stood since , French weather service Meteo-France said.
LA TESTE-DE-BUCH, France (AP) – A heat wave broiling Europe spilled northward Monday to Britain and fueled ferocious wildfires in Spain and France, which evacuated thousands of people and scrambled water-bombing planes and firefighters to battle flames in tinder-dry forests
Regional records in France were broken in over a dozen towns, as the weather service said Monday was “the hottest day of this heat wave.”
Croatia sent a water-dropping plane there to help after struggling last week with its own wildfires along the Adriatic Sea. A fire in Sibenik forced some people to evacuate their homes but was later extinguished.
In Portugal, much cooler weather Monday helped fire crews make progress. More than 600 firefighters attended four major fires in northern Portugal.
Leicester reported from Le Pecq. Associated Press journalists Danica Kirka and Jill Lawless in London, Geir Moulson in Berlin, Raquel Redondo in Madrid, Barry Hatton in Lisbon, Portugal, and Jovana Gec from Belgrade, Serbia, contributed.