A month's worth of rain is expected to fall in parts of Britain on Monday (April 30) as temperatures plummet and bring a threat of snow – just days after the country enjoyed a brief heatwave.
A yellow warning for heavy rain and strong winds is in place across south-eastern England, and higher ground in some parts of the country could be hit with up to 70mm of precipitation.
The Environment Agency say there is also a threat of flooding.
"Strong winds will lead to large waves and spray in exposed coastal areas and we encourage people to take care in these locations," flood duty manager Clare Dinnis said.
The Met Office forecasts a top temperature of just 8C (46F) for London and the south-east, 12C (54F) for Manchester and 6C (43F) for Norwich.
Becky Mitchell, a Met Office meteorologist, said the south-east would be "getting the worst of the weather", with between 60mm and 80mm of rain predicted for the North Downs between Kent and Surrey. April’s average is 50mm.
"The heavy rain will be accompanied by strong to gale force northerly winds and it may be cold enough to produce some snow on high ground although this seems unlikely to settle," the Met Office wrote on its website, and warned of possible delays or cancellations affecting public transport.