Britain is to be hotter than Barcelona as temperatures soar to 19C, according to forecasters.
Another rise in temperatures is expected after the Easter bank holiday weekend when thermometers rose to 23C making it this year's hottest temperature.
Temperatures fell on Saturday a little but on Easter Monday the mercury still reached 17C and forecasters expect them to rise again later this week.
It will remain chilly today at around 2C or 3C in the South West of England but across the country they are levelling at around 5C.
Later on Tuesday afternoon, thermometers are expected to be as high as 15C in the South East of England.
Further warm air means Wednesday could see the mercury rising to 18C which will mean the UK will be hotter than Barcelona which will reach only 14C.
BBC weather forecaster Matt Taylor told the Mirror : "For those of you who have extended your Easter break into this week there is some good weather news in that there will be a lot of dry weather around.
"Admittedly there will be some showers, more especially in the next 24 hours and as the week goes on an increasing breeze will turn eastern areas that bit cooler."
It could be a tad chilly as many people returned to work after their Easter break.
Forecasters say Northern Ireland could be hit by frost and parts of Scotland but the remainder of the UK will have sunshine and showers with temperatures expected to reach around 17C.
But Wednesday will be much warmer with a return to higher temperatures:
London and South East England
A largely dry and bright day with long sunny spells. Warm, especially along the south coast.
A bright and clear evening but cloud likely developing overnight. Maximum temperature 19 °C.
South West
Largely fine and dry on Wednesday, also feeling warmer with periods of sunshine.
Slight risk of an isolated shower during the afternoon. Maximum temperature 16 °C.
West Midlands
Largely fine and dry on Wednesday, also feeling warmer with periods of sunshine.
Slight risk of an isolated shower during the afternoon. Maximum temperature 16 °C.
East Midlands
A partly cloudy start, with hill fog soon clearing.
The afternoon will be increasingly bright and warm with good sunny spells.
Becoming breezy overnight as cloud returns by dawn. Maximum temperature 17 °C.
North West
Largely fine and dry on Wednesday, also feeling warmer with periods of sunshine.
Slight risk of an isolated shower across parts of Lancashire and Cheshire. Maximum temperature 16 °C.
North East
Cloudy towards coasts initially, with haar clearing by late morning.
The afternoon will be increasingly bright and warm with good sunny spells.
Becoming breezy overnight as cloud returns by dawn. Maximum temperature 17 °C.
Yorkshire
A partly cloudy start, with hill fog soon clearing.
The afternoon will be increasingly bright and warm with good sunny spells.
Becoming breezy overnight as cloud returns by dawn. Maximum temperature 17 °C.
Wales
Largely fine and dry on Wednesday, also feeling warmer with periods of sunshine.
Slight risk of an isolated shower during the afternoon. Maximum Temperature 15 °C.
Northern Ireland
Mist and fog soon clearing to leave a mainly dry and bright day with sunny spells.
Isolated afternoon showers and feeling pleasantly warm in any sunshine. Maximum temperature 16 °C.
Scotland
Mainly dry and bright with sunny spells, although a few well scattered showers likely in the afternoon.
Light or moderate east or southeast winds. Maximum temperature 16 °C.
