Another heatwave could be on the way this weekend

Another heatwave could be on the way this weekend, with more changeable weather expected beforehand.

More changeable weather is expected this week with some showers, before temperatures are set to rise at the weekend hitting 29C on Saturday, then potentially 30C on Sunday and 31C on Monday, the Met Office said.

An official heatwave is recorded when areas reach a certain temperature for three consecutive days, with thresholds varying from 25C to 28C in different parts of the UK.

Oli Claydon, spokesman for the Met Office, said this week more changeable weather is on the way compared to the previous few weeks.

Glastonbury-goers can expect a mixed bag of sunshine and rain this week.

More than 200,000 people are expected to descend on the fields of Pilton, with ticket-holders advised to prepare for mainly warm weather, but to also bring waterproofs to the five-day event.

Risk of showers

Mr Claydon said: “Wednesday will be warmer, though an increasing risk of showers and thunderstorms, with a maximum of 28C in the South East.

“Through the day we will have some showers moving into south-western parts, with a thunderstorm risk in the South East.

“As we go into Thursday, there will be heavy showers potentially in the east, but there will be some clear spells in there as well, with a maximum of 27C.

“Not everywhere will see the showers and there will be some dry spells around as well.

“There will be more persistent rain around the north west of Scotland on Thursday evening.

“Friday will see a maximum of 27C again as the high, the showers will clear away to the north east, with local drizzle in parts of the South West and Wales through the day.

“When we go into the weekend is when we start to see the temperatures get higher, with 29C in the South East.

“On Sunday there could be some cloud and showers about in the north and north west, that will ease through the day then it will be dry and clear with good sunny spells, potentially 30C on Sunday in the South East.”

Monday could see 30C or even 31C but the certainty around that is not very high yet, Mr Claydon added.

It comes after a provisional high of 33.2C was recorded by the weather service on June 21 in Charlwood, Surrey, making it the warmest day so far of 2025.

Cardiff heatwave

Last week the Met office said “many places” in England and “one or two areas” in Wales, including Cardiff, entered a heatwave on June 20.

A short-lived localised heatwave is possible in the South East of England as temperatures rise this weekend, Mr Claydon said.

He said: “It’s a little bit uncertain, potentially we could remain in the 30s in the far South East of England, and it’s quite a long way ahead, there is potential there and if it did reach into the 30s in the South East we could be looking at a short-lived localised heatwave.

“When we had the warm spell last week it was much more widespread, we’re not likely to see that.”

Temperatures are looking to fall next week, the forecaster said.

So far, June’s average daytime temperatures have been 19.2C, slightly above the average of 17.68C, according to the Met Office.