‘One last blast of summer’ with temperatures set to climb above 30C

The UK will see "one last blast of summer" next week, with temperatures set to climb above 30C.

The mercury could top out at 31C in of southern England next Tuesday, but not before parts of Scotland will be hit by torrential downpours that could bring almost a month's worth of rain in just one day.

According to Met Office forecaster Bonnie Diamond, the "tropical continental air pushing up from a southerly direction in combination with light winds" will see temperatures up to 25C on Sunday and then 29C by Monday.

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Britain sizzles in heatwave
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Britain sizzles in heatwave
BRIGHTON, UNITED KINGDOM - AUGUST 08: Brighton beach is packed as the South of England basks in a summer heatwave on August 08, 2020 in Brighton, United Kingdom. Parts of England are enjoying a three-day heatwave with temperatures set to reach up to 38 degrees centigrade in the South East. (Photo by Mike Hewitt/Getty Images)
People enjoy the hot weather at Southend beach in Essex. (Photo by Yui Mok/PA Images via Getty Images)
People enjoy the hot weather at Southend beach in Essex. (Photo by Yui Mok/PA Images via Getty Images)
People enjoy the warm weather in Green Park as the heatwave continues in London on August 8, 2020. (Photo by ISABEL INFANTES / AFP) (Photo by ISABEL INFANTES/AFP via Getty Images)
FALMOUTH, ENGLAND - AUGUST 8: A book reader relaxes in the sun on Gyllyngvase Beach on August 8, 2020 in Falmouth, Cornwall, England. The RNLI has called on beachgoers in the south west of England to follow water safety advice and adhere to social distancing."nLast week, the charity carried out 30 rescues in one day on just one beach in Cornwall. (Photo by Hugh R Hastings/Getty Images)
A woman uses a fan to keep cool as people enjoy the hot weather outside a bar on the South Bank, in central London. (Photo by Dominic Lipinski/PA Images via Getty Images)
People enjoy the hot weather at Southend beach in Essex. (Photo by Yui Mok/PA Images via Getty Images)
Polish tourists put on some sun cream outside Buckingham Palace as the heatwave continues in London on August 8, 2020. (Photo by ISABEL INFANTES / AFP) (Photo by ISABEL INFANTES/AFP via Getty Images)
MARGATE, UNITED KINGDOM - AUGUST 07: Boys somersault into the water from the lido jetty wall at Margate beach on August 07, 2020 in Margate, United Kingdom. Parts of the England are preparing for a three-day heatwave with temperatures set to reach up to 38 degrees centigrade in the South East. (Photo by Leon Neal/Getty Images)
Large crowds gather at Southend beach as temperatures are set to rise to as high as 38C due to a huge heatwave hitting the UK
A woman jumping into the water at Southend beach as temperatures are set to rise to as high as 38C due to a huge heatwave hitting the UK
A woman walking down Southend beach as temperatures are set to rise to as high as 38C due to a huge heatwave hitting the UK
A man doing a slip into the water at Southend beach as temperatures are set to rise to as high as 38C due to a huge heatwave hitting the UK
A woman standing in the water with large crowds of people behind her at Southend beach as temperatures are set to rise to as high as 38C due to a huge heatwave hitting the UK
A woman and a man having fun in the water at Southend beach as temperatures are set to rise to as high as 38C due to a huge heatwave hitting the UK
A man doing a slip into the water at Southend beach as temperatures are set to rise to as high as 38C due to a huge heatwave hitting the UK
A woman take a smart phone photo of the animal rights group PETA's ice sculptures in the shape of farm animals with a placard that says 'Meat = Heat animal agriculture causes climate change' as they melt on what is one of the hottest days of the yearIn London, Friday, Aug. 7, 2020. Temperatures in Britain are forecast to reach around 36c (97f), with the heatwave lasting four days. AP Photo/Alastair Grant)
People enjoy the beach in what is expected to be the hottest day of the year, in Bournemouth, Dorset, southern Britain Friday, Aug. 7, 2020. Britain braced for record-breaking temperatures of up to 37 degrees Celsius (98.6 Fahrenheit) in southeastern England amid a heatwave lasting through the weekend. (Andrew Matthews/PA via AP)
Two people relax in deck chairs as beachgoers enjoy the sunshine and sea on what is now Britain's hottest day of the year so far, in Brighton, England, Friday, July 31, 2020. Temperatures have reached 35C (95F) at London's Heathrow Airport. (AP Photo/Alastair Grant)
BOURNEMOUTH, ENGLAND - AUGUST 07: General view of tourists on the beach on August 07, 2020 in Bournemouth, England. Parts of England are enjoying a three-day heatwave with temperatures set to reach up to 38 degrees centigrade in the South East. (Photo by Finnbarr Webster/Getty Images)
MARGATE, UNITED KINGDOM - AUGUST 07: Crowds build up on Margate beach as the temperature rises on August 07, 2020 in Margate, United Kingdom. Parts of the England are preparing for a three-day heatwave with temperatures set to reach up to 38 degrees centigrade in the South East. (Photo by Leon Neal/Getty Images)
MARGATE, UNITED KINGDOM - AUGUST 07: Boys somersault into the water from the lido jetty wall at Margate beach on August 07, 2020 in Margate, United Kingdom. Parts of the England are preparing for a three-day heatwave with temperatures set to reach up to 38 degrees centigrade in the South East. (Photo by Leon Neal/Getty Images)
BRIGHTON, UNITED KINGDOM - AUGUST 07: Brighton beach is packed as the South of England basks in a summer heatwave on August 07, 2020 in Brighton, United Kingdom. Parts of England are enjoying a three-day heatwave with temperatures set to reach up to 38 degrees centigrade in the South East. (Photo by Mike Hewitt/Getty Images)
BRIGHTON, UNITED KINGDOM - AUGUST 07: Brighton beach is packed as the South of England basks in a summer heatwave on August 07, 2020 in Brighton, United Kingdom. Parts of England are enjoying a three-day heatwave with temperatures set to reach up to 38 degrees centigrade in the South East. (Photo by Mike Hewitt/Getty Images)
BARRY, WALES - AUGUST 7: A police van on the promenade as people gather on the beach at Whitmore Bay, Barry Island on August 7, 2020, in Barry, Wales. Forecasters have said Friday could be the hottest day of the year in some parts of the country, with temperatures predicted to rise as high as 38C in places. (Photo by Matthew Horwood/Getty Images)
BARRY, WALES - AUGUST 7: A general view of people on the beach at Whitmore Bay, Barry Island on August 7, 2020, in Barry, Wales. Forecasters have said Friday could be the hottest day of the year in some parts of the country, with temperatures predicted to rise as high as 38C in places. (Photo by Matthew Horwood/Getty Images)
BOURNEMOUTH, ENGLAND - AUGUST 07: The sun is reflected in a silver sphere at Boscombe beach on August 07, 2020 in Bournemouth, England. Parts of England are enjoying a three-day heatwave with temperatures set to reach up to 38 degrees centigrade in the South East. (Photo by Finnbarr Webster/Getty Images)
LONDON, ENGLAND - AUGUST 07: Members of the public enjoy an outdoor swim at West Reservoir in Stoke Newington on August 07, 2020 in London, United Kingdom. Parts of England are enjoying a three-day heatwave with temperatures set to reach up to 38 degrees centigrade in the South East. (Photo by Dan Kitwood/Getty Images)
MARGATE, UNITED KINGDOM - AUGUST 07: A dog cools off in the seawater lido on August 07, 2020 in Margate, United Kingdom. Parts of England are preparing for a three-day heatwave with temperatures set to reach up to 38 degrees centigrade in the South East. (Photo by Leon Neal/Getty Images)
People enjoy the hot weather at Bournemouth beach in Dorset. (Photo by Andrew Matthews/PA Images via Getty Images)
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The top temperatures expected on Tuesday could remain on Wednesday, but there is the possibility of some thunderstorms mixed in.

"It's definitely feels like one last blast of summer even though we are, meteorologically speaking, in autumn," she added.

The September heat follows on from an August heatwave which saw temperatures top out at 34C for six days running last month.

The highest temperature ever recorded in September was 35.6C on September 2 1906, but they "don't look like they're going to come anywhere close to that in this current hot spell", the forecaster said.

After a sunny Saturday across the country, the evening will bring the wet weather to parts of western and north western Scotland "for what looks like at least 24 hours".

A yellow weather warning is in force for the region through Saturday and Sunday, advising that there could be floods and communities cut off as 150mm of rainfall is expected.

The average total rain for the region in September is 155.9mm.

South of the border, Ms Diamond described the weekend's weather as "pretty decent" with "high pressure in charge".

She added: "We're looking at a mostly dry weekend away from north-west Scotland with the promise of sunshine."

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