Britain set to boil in Indian summer heatwave returning in days – maps

UK weather: Maps show increased storm risk in coming days

The UK is mere days away from “t-shirt weather”, with the thermometer dial set to shift from the early to mid 20s in early October.

That’s according to a meteorologist who laid bare the chances of an Indian summer to as the month of September draws to an end.

Jim Dale, senior meteorologist at British Weather Services, has articulated new weather charts which show sizzling heat rising up from the continent at the start of autumn.

It’ll come mere days after the remnants of ex-tropical storm Nigel unleashes hell on Britain, with sporadic and severe rainfall set to bring flash-flooding to large parts of the western coast.

Mr Dale, an author and weather commentator, said in an exclusive interview that the UK’s fortunes look set to turn after this unsettled period – with grey, cold days not on the radar for now.

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He said: “A new month, new weather – it is a bit by accident that we go from one regime to another: moving from one kind of mixed rainy-changeable to another.

“But mother nature has a knack of balancing things out. What tends to happen once we have had low pressure – we then get a bit of the other (high pressure).

“Once we get to October, if we get any warm weather, that can be classed as an Indian summer. If it happens in the way we are seeing it, the south-east could get to 21, 22, 23C – sustained sunshine for a week or more.”

He said the tides will turn, particularly in the south-east where the hottest weather will be felt. But, because of the time of year, the nights will still draw in sooner and therefore will become colder much quicker.

‘It could go into t-shirt weather’ 

While a fresh surge of high pressure may keep autumnal conditions at bay – they will not stop the foggy, and chilly, mornings. Maps show the mercury sinking to around six to 7C by 6am in central areas by October 7.

In central Scotland this will decrease by one to two degrees. Weather maps currently show October 7 to the the warmest day of the first week with highs of 19C in the south.

Mr Dale added: “But we are nearly two weeks away – it may take a day or two to heat up in October.

“We will be in for that tranquil time of lovely afternoon heat and we it could go into t-shirt weather – whether we see record-breakers is another issue entirely.

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“Given where we are with the temperatures – the land is warmish, as is the sea, there is potential for a nice southerly flow that can bring the higher temperatures.”

What does the Met Office say?

The Met Office has told the UK it cannot be specific with October forecasts, but its long-range outlook for October looks optimistic in the way of predicting a hotter spell.

From October 7 to 21, it says: “A continuation of the gradually increasing chance of more prolonged settled spells until around mid-month, particularly in the SE, at which point there are signs of a change of type.

“A north/south split looks increasingly probable with it being drier than average in the north and wetter than average in the south.

“Above average temperatures are more likely than below overall, though in any settled spells some chilly nights and morning fog patches will continue to occur.”

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