The UK has entered its third heatwave in as many months, with temperatures expected to climb as high as 35C in some areas later this week, the Met Office has said.
South east England has now officially met the heatwave criteria, after three days of temperatures above 28C, according to the forecaster.
Temperatures are set to continue to rise across the UK throughout the week, and more regions are likely to reach their local heatwave thresholds, it added.
Parts of southern England could see temperature highs of about 32C on Tuesday, rising to 33C on Wednesday and 34C on Thursday, with the highest readings of 35C forecast for isolated areas on Friday and Saturday.
On Monday, the highest temperature was recorded as 34C in Teddington, south-west London, the Met Office said.
Has it been hot where you are today?
Southeast England is now officially in a heatwave after 3 days of temperatures above 28°C 🌡️
Here's today's top temperatures 👇 pic.twitter.com/HneABYAGTJ
— Met Office (@metoffice) July 6, 2026
While southern areas are set to face increasingly hot conditions from Monday evening, a north-south divide will persist through the first half of the week, according to the forecaster.
Scotland should see stronger winds and outbreaks of rain on Tuesday, with temperatures remaining generally closer to the average for this time of the year.
But, by the weekend, the warm air is forecast to reach northern parts of the UK, and conditions are set to become increasingly humid, with a growing risk of showers or isolated thunderstorms.
Early next week, temperatures are likely to fall slightly, though many areas will stay dry and warm, the Met Office said.
A heatwave will build across England and Wales this week, with temperatures in the low to mid 30s Celsius each day 🌡️
Also warming up across parts of Scotland and Northern Ireland later this week ☀️ pic.twitter.com/fSis0XDwDk
— Met Office (@metoffice) July 6, 2026
Its deputy chief forecaster, Steven Keates, said people should “take the usual precautions with the heat and the sun”.
He said: “Parts of the UK are entering heatwave conditions: the third heatwave in the UK so far this year.
“However, unlike the May and June heatwaves, we are not expecting this heatwave to be record-breaking.
“Temperatures this week are not expected to reach the highs we witnessed last month, though parts of southern England in particular are likely to see several days in the low 30s, and a few places could reach 34-35C later this week.”
Amber heat health alerts have been issued by the UK Health Security Agency (UKHSA) for the Midlands and southern England, from 9am on Wednesday until 9pm on Sunday.
This means significant impacts are likely across health and social care services due to the high temperatures, including a rise in deaths, particularly among those aged 65 and over or with health conditions.
Yellow heat health alerts have also been issued by the agency for Yorkshire and northern England, also between 9am on Wednesday to 9pm on Sunday.
The UKHSA said similar significant impacts are possible across these areas, and warned of a potential increase in water-related incidents across England, including risks from cold water shock and drowning.
🟠⚠️ An Amber Heat-Health Alert has been issued across the Midlands and southern England, with a Yellow Heat-Health Alert in place across Yorkshire and northern England. These alerts will be in place until Sunday 12 July. pic.twitter.com/lyUpd4SJgj
— UK Health Security Agency (@UKHSA) July 6, 2026
The Met Office also warned England could experience “tropical nights” later this week, where temperatures will not fall below 20C.
National Rail Enquiries has urged train passengers to check for updates over the coming days because of the heatwave.
Vehicle breakdown rescue companies are also likely to be busier than usual because of the high temperatures.
Drivers are advised to carry plenty of water and conduct essential vehicle checks before setting off, particularly tyre pressures and their levels of coolant and oil.
Tony Rich, a spokesman for the AA on road safety, said: “With temperatures expected to climb into the low 30s across parts of England over the coming days, drivers should take the heat as seriously as they would ice or heavy rain.
“A few simple checks before setting off can make all the difference. Make sure your tyres are correctly inflated, check your coolant level and carry plenty of drinking water for everyone in the vehicle, including pets.
“If you’re planning a longer journey, build in regular breaks and try to avoid the hottest part of the day where possible.
“Should you break down, get yourself and your passengers to a place of safety, ideally behind the safety barrier if there is one, and keep hydrated while waiting for assistance.”
The Met Office said UV levels are expected to be high or very high across many parts of the UK throughout the week, and advised people to ensure they use sun protection.
The forecaster further warned pollen levels are also expected to be high or very high in some areas this week.
