UK households told to shut windows and curtains facing one direction on Sunday

The nation is set to bake this weekend with temperatures predicted to skyrocket to just under 35C in some regions.

Sunday, June 29 is set to be the hottest day of the two, with the south-east of England plunged into an amber heat health alert warning, affecting millions.

These warnings are released by the Met Office and the UKHSA issuing important advice for the over 65 population and those who may be at an elevated risk in the heat, such as those with specific illnesses.

Among some of the guidance issued, the UKHSA urges people to be mindful of temperatures soaring in their own homes. In a bid to keep the heat out and the cooler air in, the UKHSA says: "Keep your home cool by closing windows and curtains in rooms that face the sun."

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Those with south-facing elevations, such as windows and doors facing the sun, are urged to actually keep them closed as opposed to open to create cooler spaces. Keeping curtains closed stops UV rays from bleeding into properties and ultimately heating up rooms.

People are also encouraged to remain out of the sun during peak hours of 11am and 3pm, when the mercury is typically at its hottest.

How long will the UK heatwave last?

Mike Silverstone, deputy chief meteorologist at the Met Office said: “Higher temperatures building over the weekend and into early next week will bring particularly warm, hot or even very hot conditions for some, especially in the southeast and East Anglia and more locally elsewhere in England and east Wales.

"This in part will be influenced by a heatwave developing across western Europe.”

He added: “By the weekend, an area of high pressure will be intensifying and dominating the UK forecast. Conditions will be hottest in the south and east while areas further north and northwest will be relatively cooler.”

According to weather maps, Sunday could see highs of 31C by 6pm, but the hot mercury is expected to remain until at least Monday, when 34C heat is predicted to dominate, especially in areas such as Greater London.

“Monday could see temperatures reach around 34C in some parts, though we will be able to be more precise closer to the time," he added.

"The heat is most likely to gradually relent from the west on Tuesday and into Wednesday, with a return towards more average temperatures for the second half of next week.”