A burnt digger on a farm near the village of La Torre de lEspanyol, in Tarragona, Catalonia. Photograph: Jaume Sellart/EPA
The 350 local firefighters battling the blaze have been joined by 221 specialists from Spains military emergency unit, as well as planes, helicopters, tractors and other heavy machinery.
As people across Europe sought out rivers, lakes, fountains and swimming pools to stay cool, authorities in Milan, in northern Italy, said a 72-year-old homeless man had died at the citys main train station after falling ill due to the heatwave.
The French health minister, Agns Buzyn, said the peak of the heatwave would not hit the south of the country before Friday and expressed irritation that despite an increase in the number of calls to emergency services, some people did not appear to be heeding health warnings.
We see citizens who are quite irresponsible and continue to go jogging between midday and 2pm, Buzyn said, also complaining of parents leaving their children in the car while shopping.
The average high of 39.4C on Wednesday broke Frances previous June record, Mto-France said, adding that the countrys all-time highest temperature of 44.1C recorded on 12 August 2003 at two spots in the Gard dpartement would probably be surpassed.
Germany also broke its June temperature record, which dated back to 1947, with a 38.6C reading in Coschen near the Polish border. At least four people died in bathing accidents in different parts of the country on Wednesday, authorities said.
Water restrictions were imposed in North Rhine Westphalia, although there was some relief in northern Germany on Thursday as temperatures fell to levels more typical for June. In Berlin the temperature was 26C on Thursday afternoon, down from about 37C on Wednesday.
Parts of northern France were also put on drought alert, with water supplies to businesses, farmers and ordinary residents restricted. The agriculture minister, Didier Guillaume, banned the transportation of all animals until the heatwave has ended.
Most schools in Paris will stay open until the summer holidays start on Friday afternoon, authorities said, but many childcare facilities were closed and 59 primary schools were shut in the Essonne dpartement outside the capital.
Red Cross workers hand out water to homeless people in Tours amid sweltering conditions. Photograph: Guillaume Souvant/AFP/Getty Images
In Paris, Lyon, Marseille and Strasbourg, authorities banned older cars with higher emissions levels from the roads in an attempt to offset a peak in air pollution, while the French hotel group Accor opened its air-conditioned lobbies to elderly people until Saturday.
Calls to the emergency services are on the rise nationwide. We are seeing the beginning of a clear impact of the heatwave, Jrme Salomon, head of public health in France, said. For us, the worst is still to come.
Parts of Britain are also expected to experience hot temperatures on Saturday, with a high of 32C forecast in London.
Scientists have said Europes 2019 heatwave, like last years, is closely linked to the climate emergency and that such extreme weather events will be many times more likely over the coming decades.