By Rob Cooper PUBLISHED: 07:42 EST, 25 April 2013 | UPDATED: 12:26 EST, 25 April 2013 Temperatures hit 23C today on the warmest day of the year so far - but the fine weather will end before the weekend. Mercury reached the high in St James' Park, London, this afternoon, beating the year's previous record by 1C. But while the capital was basking in the sunshine, remarkably just 40 miles away in Langdon Bay, Kent, it was 13.7C. Britain was hotter than north Africa, as temperatures reached just 20C in the city of Tunis, Tunisia. Enjoying the sun: Kasia Pypno, 22, and Tairi Tillo, 21, sunbathe on Clapham Common, London, as Britain enjoyed the hottest day of the year so far
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Temperatures hit 22.6C in Cambridge - the highest in the UK this year
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But cold will return tomorrow and temperatures will hit just 13C
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Previous high was 22.0C earlier this month
Relaxing: Fine weather in @placeholder today... but unfortunately it will be gone by the weekend