The previous record was set in 1995, when temperatures peaked at 28.6C.
Brits don't get the chance to brag about the weather too often, but soaring temperatures made the country hotter than Madrid, Athens and Miami on Monday.
He said: "Swathes of Britain are about to enjoy a warm and settled Bank Holiday weekend".
He said: "Average temperatures should be about 15C (59F) so they are about 10C (50F) above average for this time of year".
Martin Bowles of the Met Office said: "Scotland won't be as warm as down south, where we expect 28C (82F) in London or the south midlands, in places like Northampton".
"However, everywhere in the United Kingdom should get at least one warm day at the very least this Bank Holiday Weekend, the only exception being the very north west of Scotland'".
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More important than that is the that dear old Blighty is boasting conditions more reminiscent of foreign climes - with the United Kingdom basking in temperatures hotter than Madrid, Athens and Miami.
"The sunshine and heat won't last much longer though, with the high pressure area that has brought the fine conditions gradually giving way to fresher winds and showers from the Atlantic over the next couple of days".
Though further north and west is expected to be rather cloudy, it is still better than was originally forecast.
"However, in north west Wales there is still a lot of cloud and sea fog, Aberdaron is low as 9.5C so not everyone in the United Kingdom is having a warm day".
People enjoying the hot summer weather along the Lowestoft Coast.
Met Office forecaster Charlie Powell: "We've got this idea that there could be some warmer spells, most likely across the south and east of England, so at least that bodes well for wedding locations".
"We're still going to see some dry days, but there's still going to be some wet days mixed in as well".