After highs of up to 29C yesterday, Brits will bid farewell to the heatwave as this weekend could see thunderstorms and torrential rain and temperatures to plummet to 10C.
Yesterday was the hottest day of the year so far, but it might not leave any traces as the weekend gears up for a sharp plunge.
But the Met Office warned the heatwave will be followed by a drop in temperature from Wednesday in the first week of relaxed lockdown measures.
On Monday, the temperatures soared to 27.6C in Porthmadog, Wales, and more hot and sunny weather was welcomed on Tuesday.
Met Office meteorologist Marco Petagna said: "The sunny weather will certainly continue for a couple more days but from Tuesday we are starting to see some more unsettled weather across Scotland and the gradual trend will be turning cooler across the UK from Wednesday onwards."
The forecaster added northerly winds will bring colder air and some areas in the south of England could see thundery showers.
But he said until the weather changes, the country will enjoy a few more scorching highs.
The Met Office warns UV levels will be very high over the next few days, particularly in the south and west of the UK, reports Express.
If heading outside, remember to wear sun protection - suncream, hats and sunglasses - where possible.
Brits should also make sure to adhere to social distancing guidelines, with a two-metre distance between yourself and any other households.
Groups of up to six can meet outside, as long as this two-metre distance is kept.
After the weeks of warm weather and a record-breaking May, some rain and changeable conditions are beginning to hit the far north of Scotland.
The Met Office tweeted: "It's not just surface winds and temperatures which are on the change, the Atlantic #Jetstream will move over the top of the British Isles in the coming days, leading to unsettled weather, and an increasing chance of #Rain".
Met Office forecaster Aidan McGivern said heavy clouds and persistent rain in northern Scotland today will show what will come over the next few days for the rest of the UK.
He said as high pressure moves west and east "a much cooler northerly airflow" will arrive on Wednesday.
Then, thunderstorms are forecast in south-east Scotland, heading into northern England and Ireland overnight.
The rest of Scotland will see "more persistent wet weather" which will spread south leading to downpours across areas of England and Wales.
He added: "Showery rain by the start of Wednesday effects the Midlands, Wales, as well as the south-west.
Those regions are likely to see the "heaviest rain" on Wednesday.
The forecaster said: "Thundery downpours, slow-moving showers could cause one or two issues, in particular given the dry state of the ground at the moment."
Temperatures could plunge by 10C, with the north seeing just 7 or 8C compared to the high teens forecast for Tuesday afternoon.