Summer’s “last hurrah” will be hotter than 22C Porto, Portugal, as the Met Office forecast temperatures climbing to 18C tomorrow and up to 25C by Wednesday – 11C above 14C average highs.
A high over 23.6C would be Britain’s hottest October day since 2011, Met Office records showed. 2011 saw October hit 29.9C on October 1 at Gravesend, Kent.
The Met Office said temperatures will nudge 20C each day until as late as October 20.
Tropical Storm Leslie, in the mid-Atlantic, is helping catapult tropical air to Britain – but will also bring gales up to 80mph to the North, with the South being much calmer.
Met Office forecaster Steven Keates said: “Temperatures are going up from Monday, with Wednesday and Thursday seeing 23-24C, with 25C not discounted.
“The South should stay comfortably above average until at least October 18, with the high teens daily and odd days at 20C.
“Tropical Storm Leslie and deep Atlantic lows are bringing tropical maritime air but also windy conditions for the North for much of the next week, with 50mph gusts at times and higher in exposed parts.”
The Weather Outlook forecaster Brian Gaze said: “It’s summer’s last hurrah, with Indian Summer-style weather through mid-October shown on computer models, with 25C highs possible in midweek.
He added: “Very warm air is being pulled up to Britain, but the clash with Atlantic disturbances means very strong wind gusts around 75mph likely in the North.”
The Met Office backs a warmer-than-normal three months until Christmas.
There is a 60 to 80 per cent probability of a warmer-than-average three months until the end of December across all of the UK, the Met Office forecast model shows.
This summer was the UK’s hottest for 108 years.
