BRITS are set to sizzle during a late summer heatwave starting from today - but it's only going to last three days.

       Parts of the UK will see an official heatwave in the coming days, forecasters say.

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       Bournemouth was packed with beachgoers today, taking advantage of the lovely warm weather Credit: LNP 13

       People were also enjoying the sun in St James's Park, London, on Sunday Credit: PA 13

       Stunning backdrop for punters floating past King's College along the River Cam in Cambridge Credit: PA 13

       The South East of England will reach up to 29C from today until Wednesday with "very sunny" conditions, according to the Met Office.

       Forecaster Annie Shuttleworth said: "It's going to be very warm for the time of year. It could even be rather uncomfortable for people trying to sleep at night at around 18C in the evening.

       "We are expecting temperatures to rise at the beginning of the week.

       "Despite a cloudy start to Monday, conditions will be clear and bright with hot temperatures for large parts of England and eastern Wales due to continental air from the south.

       "This air will start to push through the country on Tuesday and Wednesday, dragging temperatures as high as 29C."

       However, the warm conditions will be followed by low pressure and storms from Wednesday afternoon onwards.

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       The UK heatwave threshold is met in locations when it records a period of at least three consecutive days with daily maximum temperature levels, which vary across the country.

       These include 25C for central England and Wales - where it has been forecast the threshold could be exceeded - and 28C for London and the south-east.

       This week's temperature is expected to exceed the average for September, which is 18C in the UK.

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       It's a thumbs-up from Bournemouth for local residents John Del-Pinto and Toby Thorne Credit: LNP 13

       Congrats to this bride and groom, who enjoyed a romantic boat trip during Sunday's hot weather in Stratford-upon-Avon, Warwickshire Credit: PA 13

       Brighton beach was also busy on Sunday as visitors soaked up the sunshine Credit: Alamy 13

       Tyler, two has fun playing in the sand at Sandhaven Beach in South Shields, South Tyneside Credit: NNP 13

       This man tries to keep skin cancer at bay by applying sun lotion in Stratford-upon-Avon, Warwickshire Credit: PA 13

       Above: the sunny scene for Monday afternoon

       However, she warned of an area of low pressure moving in from the west on Wednesday afternoon, bringing with it grey and wet conditions for much of the UK on Thursday.

       Thunderstorms are also expected in the second half of the week to conclude the hot spell.

       Her comments were echoed by Netweather TV, which said that "much of the coming week will be very warm or hot - warmer than in August, in fact.

       "With high pressure now to the East bringing drier air off the nearby continent, we're getting rid of the gloom that has plagued many eastern parts for weeks."

       It's going to be very warm for the time of year.

       Annie Shuttleworth, Met Office

       The forecasters added: "It's back to school on Monday with the new working week, ironically, bringing the return of summer for the southern half of England and Wales.

       "Here, mist and patchy fog will lift to leave a lovely, very warm, even hot day, with spells of hazy sunshine raising temperatures to 23 to 26C even a hot 27C locally.

       "The patchy rain over Northern Ireland and the North of England will peter out, allowing skies to brighten, but here together with much of Scotland, you'll probably keep a lot of cloud."

       The site also warned of looming "showers, some of them heavy and thundery, edge in from the West later in the week".

       It comes as bookmaker Coral cut odds on a record hot September in the UK from 2-1 to 4-5.

       A spokesman said: "Summer may not be over just yet and with a mini heatwave on its way, the chances of this month ending as a record hot September have increased significantly."

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       WXCharts shows the lovely warm weather expected today 13

       Enjoying the sea in Brighton, East Sussex Credit: LNP 13

       People also visited Sandbanks beach, Poole Credit: PA