It comes after the mercury peaked at 38.1C in Santon Downham, Suffolk on Monday, making it the hottest day of the year and the third warmest on record, after 38.7C in Cambridge in 2019 and 38, 5 degrees Celsius in Faversham, Kent in August. 2003. The mercury will soar to possible highs of 41C in isolated areas on Tuesday, making the country hotter than Jamaica, the Maldives and Barbados – with rail users warned of delays, cancellations and changes to train routes. Met Office forecaster Rachel Ayers told the PA news agency: “It will remain very warm overnight so expect a difficult night to sleep. “So we have a very unprecedented day tomorrow, it’s going to be very hot all day, before going up to 40C, maybe 41C in isolated spots across England in the afternoon. “This will be the hottest day on record and the first time we have seen temperatures of up to 40C.” Scotland and Wales could also see their hottest days on record.