The latest heat charts from Netweather show scorching highs of 31C hitting London on Friday. The heat will even linger around northern regions as North Yorkshire and Manchester will see temperatures of 27C.
Before the heatwave returns, Jo Farrow at Netweather warned low pressure will sweep in cooler air and rain from the Atlantic at the start of the week.
She said: “Low pressure has moved over the UK during the night and brought rain in from the Atlantic.
“There will be heavy downpours particularly for north west England, Wales, Dumfries and Galloway and Northern Ireland in the morning.
“With plenty of cloud the low centre will move over northern Britain by lunchtime.”
Fresh south and southwest winds will move over England and Wales during the day.
Temperatures will reach the high teens and low twenties today before the heatwave hits the UK towards the end of the week.
The southeast of England will dodge most of the rain set to damped other parts of the UK.
Winds will strengthen and blast the north of the UK.
Lively showers could also sweep across north Wales and northern England today.
Ms Farrow added: “The low centre will be between Aberdeen and Norway by Tuesday as the winds strengthen with gales around the Moray Firth and for Orkney.
“Also, strong, gusty winds for Cairngorms so walkers should take note.
“Southern Britain will have lighter winds and see temperatures in the high teens or low 20sC on Tuesday.”
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Most of England and Wales will start today with dry and sunny atmosphere.
But showers will change the weather quite quickly in the north west of England.
Ms Farrow added: “There will also be showers for Northern Ireland and western Scotland.
“All of these will be pushed south and east on the brisk breeze, particularly for northern Britain.
“The wild and wet weather in the far northeast continues but does drift away from the Aberdeenshire coast during the afternoon.”
By Thursday and Friday this week, Britain will see a return to warm summer weather before the country heads into August.
Temperatures are expected to reach well into the high twenties and could hit 31C in some parts.
So far in July, the UK has not rocketed up to 31C yet as a month of cool air and unsettled weather has swept across the UK.
But the last day of July could change this and make the summer holidays feel more sizzling.
The pollen count for Friday and Saturday will be high in the north of England, Wales and Northern Ireland.
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