Temperatures in the Anglia region reached 20°C on Sunday putting places like Menorca, Madrid and Rome into the shade.
Just a week ago May was heading towards being one of the coldest and dullest on record but in the space of 7 days that has changed.
Spring has sprung back into life across the Anglia region after weeks of seemingly relentless cloud and rain.
While temperatures soared to 19-20°C in the Anglia region on Sunday, 24 hours later they are struggling to get into double figures.
The map shows the actual temperatures in the Anglia region at 2pm on Monday - on the North Norfolk coast they were 7°C while near Southend they reached 14°C.
The highest temperature in the region on Sunday was 20.4°C at Santon Downham in Suffolk. On Monday at 2pm it was 9°C at the same location.
Temperatures in the Anglia region have again peaked at 19C (66F), some 9 degrees higher than normal for March. It reached 19C at Lakenheath, Suffolk as well as in Cambridge and Norwich.
Sea breezes off the chilly North Sea are keeping the coast a little cooler with highs of 15C in Southend, Essex and 13C at Weybourne, Norfolk.
It will be warmer still on Wednesday with temperatures expected to reach 19-22C (66-72F) which is more like June than March.
Scotland has beaten its March temperature record for the third day in a row with the mercury rising to 23.4C (74.1F) at Aboyne in Aberdeenshire. The all-time UK March record is 25.6C (78.1F) recorded in Mepal, Cambridgeshire in 1968.
After a chilly start to the day in the Anglia region temperatures will rapidly rise under the sunny conditions. The highest temperatures will be towards Hertfordshire and Bedfordshire with highs around 19°C.
Onshore breeze keeps coastal areas, especially the Norfolk coast, noticeably cooler
Monday's highest temperature in the Anglia region was 18.9C at Santon Downham on the Suffolk-Norfolk border Although it reached only 10.1C at Weybourne, Norfolk.
Wittering in Cambridgeshire was the sunniest place with 12 hours of sunshine.