UK faces 600 mile heatwave within days and hottest day of year 'under threat'

New charts show the exact date a 600-mile wide 'heat wall' will hit Britain. The UK faces a staggering 600-mile heatwave as the next blast of hot weather hitting the country is confirmed before the end of May, the fifth month of the year.

London and the East of England could see mercury hit 24C on May 25, weather website NetWeather has forecast. And temperatures are likely to last for five days, with mid-twenties heat for a long period as the UK basks in the balmy conditions.

The current record for hottest day of the year - 25.9C in Sussex - could also be under threat. The forecast for May 18 to May 26 from the BBC forecasters explains it will be "turning hotter" as we head through the next two weeks and towards June.

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"TTowards the end of next week high pressure could shift over northern parts of the UK or into the North Sea bringing higher temperatures and drier conditions, particularly in northern and central areas. Areas of low pressure could remain south or south-east of the UK and lead to some showers, at least in south and south-east England," it said.

Exacta Weather forecaster James Madden said: “June is likely to start on a decent note for many of us, with warm or potentially hot temperatures spilling over from the end of May. Some projections have identified a potentially hot period of weather around mid-July, and this could last for an extended period, and during this time, there is no reason we couldn’t see temperatures in the mid-to high-30Cs.

“Temperatures are likely to be above-average for the month as a whole.” The BBC says early June will be "warmer" but says June 3 to June 16 could also prove "changeable", and added: "By the third week of June conditions could continue to be quite changeable on average as low pressure near Iceland spreads towards the UK.

"There is also the possibility of areas of low pressure moving generally north of the UK, allowing the high pressure from the Azores High to spread across the UK and parts of western continental Europe. This would be a warmer, calmer and drier pattern on average."