The UK is set for a week of blue skies and warm weather with temperatures climbing as high as 29C.
According to the Met Office, temperatures of 24C or 25C are expected later on Monday and will gradually increase each day until they peak on Wednesday or Thursday at 28C, with a small chance of reaching 29C.
Widespread sunshine is expected across the country, with only northern parts of Scotland set for more seasonable rainfall.
As fog and mist patches cleared across the capital this morning, London is now experiencing the early signs of summer with prolonged sunshine and light winds.
Monday is likely to be the hottest day of the year so far when it hits 24C this afternoon, the Met Office has said, with the coming days following this record-breaking theme.
Temperatures are expected to drop down to at least the low teens during the night, however, Met Office meteorologist Craig Snell confirmed.
Meanwhile, the pollen forecast will remain high across London and southern England throughout the week, with oak and plane pollen to blame.
The new week heralds in new weather
— Met Office (@metoffice) April 27, 2025
Get ahead of the game with Monday's 4cast 👇 pic.twitter.com/xQTPp2IkIE
"We're certainly on track to see the warmest spell of the year so far,” Mr Snell said.
"There will be plenty of sunshine around, the very north of Scotland at times will see some spells of rain, especially at the beginning of the week, but it's going to be limited to the far north of Scotland.
"For a lot of the UK it's going to be largely sunny."
He added: Temperatures will be "markedly higher" than what they should be for this time of year, as at the end of April it is usually about 12C in the north and 16C in the south, so some areas could be more than 10C higher than the average.
There'll be plentiful amounts of sunshine over the coming week
— Met Office (@metoffice) April 27, 2025
And at this time of year, that means we get to make the most of the lengthening evenings 🌄 pic.twitter.com/hKjZJpW7UH
Records for April and May are unlikely to be broken as the record for April stands at 29.4C, recorded at Camden Square in London on April 16, 1949, and May's record is 32.8C.
But some local records at stations could be broken, the forecaster added.
It will be close to what the Met Office considers a heatwave in some areas but there is not likely to be a heatwave widely, Mr Snell said.
According to the Met Office, the definition of a heatwave is three consecutive days of temperatures exceeding the "heatwave threshold", which varies across the country.
The threshold is 25C for most of the UK, with slightly higher numbers for the South and East, and rising to 28C in London.
On Friday, temperatures will start to drop towards the average for the time of year, with temperatures in the high teens in the South and mid teens in the North, Mr Snell said.
