When will the heat wave end? Latest Met Office weather forecasts and how long the hot weather will last in the UK

It looks like the heatwave may be coming to an end, with yellow weather warnings for thunderstorms in parts of the UK and colder temperatures ahead.

The Meteorological Service issued warnings for today (Sunday) And MondayThis contrasts with the extreme temperatures that many have experienced over the past few days.

Saturday was chosen as the hottest day of the year so far, with 32.7 degrees Celsius recorded at Heathrow Airport. Forecasters expect today to be the seventh day in a row in which temperatures reach more than 30 degrees Celsius.

What is the cause of hot weather?

The UK saw six days of temperatures above 30C in September for the first time.

The UK heatwave threshold is met when a location records a period of at least three consecutive days with daily maximum temperatures meeting or exceeding the heatwave temperature threshold. The threshold varies by UK county – as the map below shows.

Map of UK heat thresholds (Source: Met Office)

According to the Met Office, high pressure in the south-east of the UK has brought with it more stable conditions and temperatures well above average for this time of year.

Met Office chief meteorologist Stephen Ramsdell said last week: “An active tropical cyclone season in the North Atlantic has helped amplify the pattern across the North Atlantic, pushing the jet stream north of the UK, allowing some very warm air to descend. “. drawn north.”

When and where are thunderstorm warnings given?

The Met Office has issued a yellow thunderstorm warning covering Northern Ireland, northern parts of England and Wales and southern Scotland. From 2pm to 11.59pm on Sunday.

The warning means that some places may be hit by flash floods, lightning, hail or strong winds – which could lead to access to roads and public transport being cut off.

on Monday There is a yellow thunderstorm warning for northern England and southern Scotland including Glasgow, Edinburgh, Perth, Stirling and Dundee. This exists from Midnight until 6am.

The UK Health Security Agency (UKHSA) and the Met Office had previously issued a Yellow Health Alert (HHA) for eight areas in England which will be in place. Until 9pm on Sunday. Areas included in the amber alert are:

  • London
  • southeast
  • Southwest
  • North West
  • East Midlands
  • West Midlands
  • East of England
  • Yorkshire and the Humber

The UKHSA says the yellow warning “indicates that the impacts of the weather are likely to be felt across the entire health service, and at this level we may start to see some health impacts across a wider population, not just the most vulnerable”.

“Non-health sectors may also begin to notice impacts and a more significant coordinated response may be needed,” he adds.

What did the Met Office say?

Tom Morgan, a meteorologist at the Met Office, said Sunday was likely to be the seventh day of 30C, with the highest temperatures expected in the northern counties.

“It seems likely that we will see the seventh day of temperatures reaching 30 degrees Celsius or higher, which is unprecedented,” he said. “We haven’t seen anything as long-lasting in terms of a heatwave in September before.

“We have a thunderstorm warning in place overnight for southern Scotland. That expires at 6am. Once that clears, there will be some thunderstorms tomorrow. But for the vast majority of them they will be more scattered in nature than they are today.”

What are the expectations for next week?

Today we can expect cloudy weather with rain or drizzle in the far north. Elsewhere, cloudy and sunny periods for many as thunderstorms develop and move towards the northeast. However, it will still be warm or very hot, especially in the southeast, but become more active in the northwest.


Thunderstorms will slowly dissipate towards the northeast. There will be rainfall spreading south-eastwards from north-west Scotland and Northern Ireland. The weather will be drier elsewhere with clear spells but will remain warm and humid away from the northwest.


Rain and showers will continue toward the southeast with cooler conditions. The weather will be mostly dry elsewhere with sunny spells, although more rain will follow later. Most areas farther southeast will be cooler.

Forecast from Tuesday to Thursday:

The rain is expected to eventually settle toward the southeast on Tuesday, leaving mostly dry and sunny conditions. However, it will be cooler for everyone by Wednesday with some sunshine, although more rain is expected later into Thursday.

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