Frost fractals [image credit: Schnobby – Wikipedia]
A similar story is reported in France, Germany and the Netherlands, to name a few nearby countries. It was sunnier than typical Aprils, but so was the same month last year – without the high number of frosts.
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April 2021 had the lowest average minimum temperatures for April in the UK since 1922, as air frost and clear conditions combined for a frost-laden, chilly month, despite long hours of sunshine, says a Met Office press release.
Early provisional figures from the Met Office’s National Climate Information Centre indicate that April had the third lowest average UK minimum temperature for the month since records began in 1884, while Wales, Scotland and England all reported their figures in their top five lowest ever recorded.
Average daily maximum temperatures were also below normal, but not by as much as the minimum temperatures.
It had already been reported that April had seen its highest level of air frost in 60 years, with an average of 13 days of air frost topping the previous record figure of 11 days in 1970 (records for air frost go back to 1960).
This number of air frosts is more typical for December, January or February, whereas the average number of air frosts in April is five days.
For gardeners and growers there were also a record high number of ground frosts with 22 days this month compared to an average of 12 days.
Despite the low minimum temperatures and frosts, much of the UK has basked in sunshine through April, with all UK countries currently reporting sunshine hours for the month in their top five ever recorded since 1919.
via Tallbloke’s Talkshop
May 2, 2021 TALLBLOKE’S TALKSHOP