Not all of us experienced the balmy snap, but those in Norfolk, Cambridgeshire and Lincolnshire hit temperatures rivalling the Spanish cities. Sunday saw temperatures were well above the 12C UK average for April, with a peak of 16.8C in Porthmadog, Wales. By contrast, Barcelona peaked at 17C while Madrid only hit 13C on Sunday, with expected highs of 18C and 15C respectively on Monday.
Some areas will continue to bask in the warmth in the early parts of the week before the weather turns once more.
The warm spell will be followed by thunderstorms and rain as temperatures dip back to average this week.
A Met Office spokeswoman said: “The best of the sunshine will be in the southeast, with temperatures of between 17C to 19C, possibly 20C at a push.
“That is most likely in the western parts of Norfolk, south Lincolnshire and Cambridgeshire.”
UK weather forecast: The jet stream plays a crucial role in weather (Image: Netweather)
The higher temperatures are expected to trigger thunderstorms in the southeast, with the
