An "African plume" should raise the temperature to 17 ° C on Valentine's Day, making most of Britain hotter than Malibu.
Scotland will have its hottest Valentine's day in 21 years. The Met Office forecasts temperatures of 16 ° C in the north of the country – 11 ° C above average.
The central belt will be pushed up to 13C.
A weather map shows hot air blowing over a distance of 3,000 km between Africa and the United Kingdom.
Britain should know the hottest Valentine's Day since 1998, when it was 7 pm, the record of February 14th.
Ladbrokes broke the hottest February 14 record – breaking the 19.1C record – at 2/1.
The British get really hot under the collar on this Valentine's Day
Ladbrokes spokesman Alex Apati said: "The British are getting really hot under the collar on this Valentine's Day."
Scotland will be warmer than the 14C. Measured in Malibu Beach, California, and in romantic cities like the 13C. Paris and the 8C
It is expected that the sunny highs and days will extend next week, while the warm 10 day period will continue.
Rain maps also suggest that it is unlikely that the rain will slow down anyone's romantic evening.
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A forecaster at the Met Office said, "Valentine's Day is not the only reason he is warming up. Unusually high temperatures in the afternoons, as high as 16 ° C, have been observed in northern Scotland. Next week will be sweet for some.
Weather Outlook forecaster Brian Gaze said: "The UK is under strong pressure of warm air from northern Africa.
"We could see 17 ° C by Friday, with a lot of dry spring and very mild weather next week."
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