Risk of heavy showers across much of Britain but temperatures in south-east England may hit 33C
Children playing at the Southbank Centre in London on Saturday.
Forecasters said temperatures could hit a new 2013 high on Monday as they warned of a hot, muggy few days combined with the increasing threat of thundery showers.
With some northern areas experiencing light rain and temperatures dipping in south-west England early on Sunday, the cloud across many parts of Britain was expected to thin and reveal plenty of sunshine.
Showers were expected to cross the Channel from France on Sunday night, according to the Met Office, but temperatures in south-east England may hit 33C (91.4F) or more, beating last week's 2013 high of 32.2C at Hampton waterworks in London last week.
The accompanying humidity could "make it a bit unpleasant", said Met Office forecaster George Goodfellow.
The risk of heavy showers across much of Britain will grow over the next few days. "Hopefully that will bring temperatures down a bit and it will be more comfortable for sleeping," he added.
Meteogroup, the Press Association's weather forecasting service, also warned of "the potential to be very unsettled in eastern and northern parts of Britain on Tuesday and Wednesday".
The dry weather across much of the country has caused the National Farmers' Union to warn people against the use of Chinese or sky lanterns, as well as appealing to holidaymakers and daytrippers to take extra care against accidentally starting fires.
The Met Office has also warned of "elevated risk" of fires because of the drier than usual conditions.
With some northern areas experiencing light rain and temperatures dipping in south-west England early on Sunday, the cloud across many parts of Britain was expected to thin and reveal plenty of sunshine.
Showers were expected to cross the Channel from France on Sunday night, according to the Met Office, but temperatures in south-east England may hit 33C (91.4F) or more, beating last week's 2013 high of 32.2C at Hampton waterworks in London last week.
The accompanying humidity could "make it a bit unpleasant", said Met Office forecaster George Goodfellow.
The risk of heavy showers across much of Britain will grow over the next few days. "Hopefully that will bring temperatures down a bit and it will be more comfortable for sleeping," he added.
Meteogroup, the Press Association's weather forecasting service, also warned of "the potential to be very unsettled in eastern and northern parts of Britain on Tuesday and Wednesday".
The dry weather across much of the country has caused the National Farmers' Union to warn people against the use of Chinese or sky lanterns, as well as appealing to holidaymakers and daytrippers to take extra care against accidentally starting fires.
The Met Office has also warned of "elevated risk" of fires because of the drier than usual conditions.
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