Brits are set to bask in sunshine this week as forecasters predict the hottest day of the year so far.
Wales and south-west England could hit 26C or even 27C on Thursday, says the Met Office, although there could be showers in the South of England towards the end of the week.
Cloudy weather is possible on the coast and and towards the east of England.
Yesterday saw the mercury soar to highs of 24.3C in Derrylin, Northern Ireland, while Morecambe in Lancashire saw a whopping 16 hours of sunshine.
Met Office meteorologist Greg Dewhurst said: "There will be lots of dry weather, with the sunnier skies always in the West and cloudier skies always in the East.
"Going forward, temperatures are going to be similar if not a little bit higher towards the end of the week.
"This West-East split will be continuing with temperatures as well, so in western parts of the UK, temperatures will rise to around the mid 20s while the eastern side of the UK is more likely to see mid to high teens.
"Particularly on the coast it will remain quite chilly in the East and quite cloudy at times."
Many people enjoyed sunshine across the UK on Sunday, with the highest temperature recorded as 25C in Porthmadog, Wales, while Castlederg, Northern Ireland, saw 24.5C, Bournemouth recorded 24.2C and Glasgow hit a high of 24.1C for Scotland.
While temperatures are expected to remain stable throughout the first half of this week, the South West may become windier towards the end of the week, with a risk of showers and breezes across the South.
However warm sunshine will remain for many, with the high pressure dominating to give mainly fine and settled weather.
The warmest and sunniest conditions are likely to be in the West with cloudy mornings across the East.
As temperatures are set to rise in the coming days, here is a 48-hour forecast for all UK regions:
London and South East England
Maximum temperature of 26C tomorrow, while today is set to see highs of 22C.
Tonight will be dry and largely clear, but cloudy over Kent with a minimum temperature of 8C overnight.
Wednesday will see a fine and dry day with plenty of sunshine overall, while cloud coverage continues in Kent.
Scotland
Maximum temperature of 19C today and tomorrow.
Tonight will be dry with some low cloud developing across Lothian and Borders.
Wednesday will see a dry and bright day, with warmth in the southwest but still quite cool towards the east coast.
North West England
Maximum temperature of 21C tomorrow, while today is set to see highs of 20C.
Tonight will see lots of late evening sunshine with a minimum temperature of 8C.
Wednesday is forecast to be a warm day with clear skies and plenty of sunshine, with some cloud possible for eastern areas.
North East England
Maximum temperature of 17C tomorrow, while today will see highs of 16C.
Hill fog over the highest parts of the Pennines is possible tonight, as well as drizzle and a minimum temperature of 8C.
These conditions are set to continue into Wednesday morning, with more sunshine in the afternoon.
East Midlands
Maximum temperature of 18C tomorrow, and highs of 17C today.
Hill fog is possible over the highest parts of the Peak District tonight, with a minimum temperature of 9C.
Some similar conditions on Wednesday morning, with more sunshine in the afternoon.
West Midlands
Maximum temperature of 19C today and tomorrow.
Plenty of sunshine later on tonight, turning cool after sunset with a minimum temperature of 9C.
Cloud gradually clearing through Wednesday morning for a warm day with clear skies and plenty of sunshine.
South West England
Maximum temperature of 22C tomorrow, with highs of 21C predicted for today.
Plenty of sunshine later on tonight, turning cool after sunset with a minimum temperature of 8C.
Warm and sunny on Wednesday, but will be breezy, especially around southern coasts.
Northern Ireland
Maximum temperature of 23C today and tomorrow.
Dry tonight with some mist and patchy low cloud developing later on, and a minimum temperature of 9C.
Wednesday will be dry with some good spells of sunshine, and particularly warm in the west.
Wales
Maximum temperature of 22C tomorrow, and highs of 21C today.
Plenty of late evening sunshine, with a mainly dry night and a minimum temperature of 8C.
Wednesday is set to be warm with clear skies and plenty of sunshine, though breezy around coasts.
