Soaring temperatures: Londoners can expect highs of 23C ( AFP /Getty Images)
"Sunday will be the wetter day of the weekend, with temperatures settling down atabout 15C.
"Come Monday morning, however, we'll be seeing warm southerly winds blowing into London and the south east , heating everything up nicely.
"We expect to see highs of 20Cthroughout the day on Monday, followed by an even higher peak of23C on Tuesday.
"Although it's difficult to say for sure at this stage, we imagine temperatures will remain relatively high as the week goes on."
Meanwhile the rest of the UK is expected to feel"generally warmer over the weekend with sunshine and scattered heavy showers breaking through".
Showers are expected to break up sunny spells on Monday and Tuesday, beforea drier day on Wednesday.
It is expected to remain cooler in Scotland and the north east with temperatures hitting highs of around 15C.
London is expected to hit highs above those expected on Portugal's south coast over the weekend, where it is expected to be around 17C.
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