- Video report by ITV News Correspondent Richard Pallot
Easter Saturday has been the warmest day of the year so far, the Met Office said.
The temperature hit 25.5C in Gosport, Hampshire, at approximately 3.30pm, and the mercury could rise as high as 27C on Easter Monday, according to Met Office forecaster Helen Roberts.
She said: "The very warm sunshine continues right through the bank holiday weekend.
"We could still see more record-breaking temperatures tomorrow and on Easter Monday, too."
The Met Office also said that Scotland and Northern Ireland had experienced the warmest Saturday of any Easter weekend on record.
The temperatures reached 23.7C in Fyvie Castle in Aberdeenshire, and 22.3C in Armagh.
The highest temperature in Wales was the 23.7C recorded at Usk in Monmouthshire, just shy of the 24.4C figure enjoyed on Easter Saturday in 2011.
Ms Roberts described the temperatures as "way above average" for the time of year.
The UK’s warmest Easter temperature was the 29.4C recorded at London’s Camden Square London on Easter Saturday in 1949.
The other warmest Easter weekend days include the 26.9C recorded at London’s St James’s Park on Good Friday in 2011 – when the mercury also reached 25.3C on Easter Sunday and 24C on Easter Monday, both in the Solent.
Ms Roberts said that these last two top temperatures are “ones to keep an eye on and could be broken” this weekend.
The Met Office also noted that it is "a different story" on the Iberian Peninsula where conditions are expected to be chilly and unsettled over the coming days.
Ms Roberts said that rain and possible flooding is expected in Spain and Portugal, adding: "This time of year is the Easter holidays so there are many people who are on their holidays.
"The temperature in Madrid on Monday and Tuesday is just 12C, which is a significant contrast to the UK."
Bookmaker Ladbrokes has cut odds from 5/6 to just 8/11 for this year to see the hottest Easter Sunday on record.
Alex Apati of Ladbrokes said: “Brits have been treated to a scorching start to the Easter weekend and things will only get hotter if the latest odds are anything to go by.”