The Met Office has told Brits to protect themselves as the UK is set to soar to 22 degrees this week - the hottest day of 2025 so far.
Temperatures are expected to creep up throughout the week, starting at a maximum of 19 on Tuesday, rising one degree by Wednesday and ending on a high of 22 degrees on Thursday.
In its week-ahead forecast, the Met Office predicts there will be "clear skies and warm sunshine for many", although frost could be possible in rural areas throughout the week due to largely cloudless skies.
On Tuesday, it predicts there will be a "sunny start for nearly everyone across the UK", and cloud in central parts of England is expected to burn off in the morning.
The northwest of England and north Wales are expected to feel the highest temperatures, up to 19 degrees, while the south of the UK could be cooler due to a breeze.
It added: "Wednesday will be another day of widespread sunshine, with temperatures possibly reaching 20C, especially in northeast Scotland where the Foehn effect will amplify temperatures during the day.
"Thursday is likely to bring the highest temperatures of the week, with 21 - 22C possible for southern parts of England."
The Met Office's Chief Meteorologist Paul Gundersen said: "At this time of the year, we do start to see higher UV levels, so if you are outside enjoying the sunshine do think about protecting yourself from the sun as even in April it is strong enough to burn your skin."
According to the weather agency, UV levels are starting to reach "moderate" levels, which means protection is needed to prevent your skin from burning
It noted that low cloud from the North Sea could keep temperatures lower along the east coast through Thursday and Friday.
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