The Met Office has predicted Friday or Saturday might be even hotter than last week, according to the Times. Last week, Britain saw the hottest day of the year and the third hottest since the record began in 1865 with the mercury reaching 37.8C.
Most of the country is set to have temperatures around the high twenties, but London and the southeastern region are expecting scorching temperatures of 35C to 37C.
The Met Office warned that Britain could pass the threshold for a heatwave, which entails three days of temperatures over 25C across most of the nation and 28C in London.
Hot air is sweeping north from France, where a fire broke out in Chiberta forest park, in the southwest of the country.
Velez-Malaga in Spain recorded 45.7C, for now the highest temperature in the continent this year.
In large regions of Italy thermometers recorded temperatures above 40C.
On BBC Breakfast, BBC meteorologist Matt Taylor said: “In the second half of the week, temperatures are set to climb across the country once again.
“Once we hit Friday and Saturday, we could be in the very hot category once more, especially across the eastern half of the country.
“Today it will be warm when the sun’s out, cooler when the cloud is around.
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Some of the reports include people being cut off by the tide and children going missing.
Police reported the death of a man in Barmouth, Gwynedd, north Wales, after he got into difficulty.
On Saturday a man died after he was rescued from the sea near Porthcurno, Cornwall.
Last night, a coastguard helicopter, rescue teams and an RNLI lifeboat searched for a person who had been reported missing off East Sussex.
Coastguard officials reported that a person had been seen kayaking off Hove Lagoon, near Brighton.