Britain to bask in 22C heat blast this month as sunny weather returns next week after snow Updated: Apr 13 2021, 11:44 ET Invalid Date, BRITAIN is set for a 22C heat blast this month with glorious sunshine expected to return next week. The warm weather comes as a huge boost for Brits heading to pub gardens after a cold snap yesterday. ☀️ 13 13 13 People were out enjoying the glorious sunshine and dining Alfresco in Porthleven, CornwallCredit: Alamy Temperature maps by WXCharts show the mercury soaring to the early 20s across the nation from Sunday April 25. But the best weather will come the following week - with the chart showing highs of 22C in Leeds on April 28.