And the blazing sunshine, humidity and lack of wind will make it feel closer to an astonishing 38C in parts of the country.
This is hotter than Casablanca, Morocco, which is set to be 32C.
It’s been one of the hottest June weekends on record with sun lovers flocking to the seaside and sunbathing in parks.
Extreme heat will hold out across the south this week.
It could even stay all summer.
“We are talking about heatwave conditions”
There’s no sign of any change on the horizon with the sizzling weather expected to remain until next weekend.
Temperatures across southern Britain are forecast to soar into the mid 30Cs today with highs of up to 22C in the north.
The Met Office ramped up a level-2 heat health alert to level-3 warning of a 90% chance of heatwave conditions until Wednesday.
Corinne Evans enjoys the sun and the surf at the Tolcarne Beach in Newquay, Cornwall
Forecaster Charlie Powell said: “The big thing this week is going to be the hot and very summery weather.
“We are talking about heatwave conditions and we have a heat health watch in place until Wednesday to reflect this.
“There is no real sign of any rapid change in the weather as we head through next week and into the weekend.
“Monday is likely to see the peak of the heat with highs approaching the mid 30Cs challenging the hottest day of the year so far.”
Motoring experts have warned drivers to take extra care with blazing sunshine likely to push road temperatures to 50C.
The RAC said surfaces can become sticky making it more likely for cars to skid as tar starts to soften.
Beaches are packed as the weather reaches top temperatures in the UK
RAC traffic watch spokesman Rod Dennis said: “A lengthy spell of hot weather raises the prospect of softening roads on some parts of the network.
“The tell-tale signs are tar patches that look blacker than usual.
“When the air temperature hits about 30C and the sun is out, road temperature can reach 50C and there is then a risk surfaces can become ‘sticky’.
“Drivers shouldn’t be too surprised if they see gritting trucks out as salt can help improve vehicle’s skid resistance.”
Records are likely to topple today with temperatures expected to push past the 32.8C maximum for June 19 set in Southampton in 1893.
The National Federation of Occupational Pensioners have urged people to keep an eye on elderly friends and neighbours.
Larissa Sladkova the weather girl revealed more than ever on her show striping down to a bikini
The Met Office “heatwave action” level-3 health alert states: “Very warm or hot conditions are expected with fine and sunny weather, and light winds.
“Regional temperature threshold values are likely to be approached across most regions away from the northwest, and exceeded in some eastern locations.
“Light airflow and high humidity will make night times feel very muggy.”