A yellow heat health alert is still in effect for certain areas of the UK until 18:00 on Wednesday, as regions in England and Wales experience a fourth heatwave this summer.
Temperatures are expected to reach the upper 20s and lower 30s, with certain areas in the East Midlands, Lincolnshire, and Yorkshire facing the warmest conditions, where a peak temperature of 33C is predicted for Wednesday afternoon.
On Wednesday, the Met Office noted “a more intricate scenario,” with elevated temperatures occurring alongside a possibility of thunderstorms in northern regions.
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A yellow weather alert regarding thunderstorms will be active in certain areas of Scotland from 14:00 until midnight.
A weather alert, released by the Met Office, applies to northern, central, and southeastern Scotland, where rain is expected. The weather might be especially intense and stormy.
Heavy rain may cause some local disruptions, with road spray and sudden flooding creating challenging driving conditions.
Further intense and stormy rain is anticipated in Scotland and Northern Ireland on Thursday, accompanied by a yellow weather alert active from midnight on Wednesday until 22:00 on Thursday.
Although Scotland and Northern Ireland will not officially experience a heatwave, because of the three-day rule, temperatures there remain significantly higher than usual for this time of year, with predictions of 25C to 29C on Wednesday.
The temperature limit is 25C across most of the UK, but increases to 28C in London and nearby regions, where heat levels are generally higher.
Regions in south-west England, south-west Midlands, north-west England, and East Anglia had already fulfilled the heatwave conditions, having experienced three consecutive days with temperatures exceeding a specific threshold.
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A yellow heat health alert, issued by the UK Health Security Agency (UKHSA) and the Met Office, indicates that the weather’s effects are expected to be experienced throughout the healthcare system. Under these conditions, there is a higher risk to health for people over 65 or those with existing medical conditions.
Amber alerts have been issued for London, the South East, East of England, West Midlands, and East Midlands. A yellow heat health alert is active for the South West, North East, North West, and Yorkshire and the Humber.
Global warming is causing heatwaves, such as those seen in various regions of the UK and Europe this summer, to occur more often and with greater severity.
Extreme weather occurrences across Europe must be viewed as “a public health crisis, not solely a climate issue,” stated a World Health Organization (WHO) expert panel examining the health effects of climate change on Wednesday.
Citing a 2023 report,The Pan-European Commission on Climate and Health reported that the number of deaths related to heat in Europe has risen by 30% over the last twenty years, with over 100,000 fatalities documented.
The UK does not have a specific law setting a maximum temperature for workplaces, but employers are required to ensure the environment remains comfortable.
The trade union Unite has urged the implementation of a maximum working temperature of 30C, and for work to be halted when indoor temperatures cannot be regulated or when no safeguards—like shaded spaces—are available outdoors.
Excessive heat can result in heat exhaustion or heatstroke. Heatstroke is classified as a critical medical situation that demands prompt attention.
Elderly individuals, young children, and those suffering from chronic medical conditions are particularly vulnerable.
Highest temperatures of 2025:
- England – 35.8C Faversham, 1July
- Wales– 33.1C Cardiff Bute Park, 12 July
- Scotland– 32.2C Aviemore, 12 July
- Northern Ireland– 30C Magilligan, 12 July
The temperature will decrease for most on Thursday, accompanied by some thunderstorms and cooler, less humid air arriving on Friday – however, temperatures may increase again over the weekend.
Thursday is expected to remain a very hot day in eastern and southeastern England, with temperatures peaking at 29C. In other areas, the predicted temperatures will be somewhat lower, ranging from 24C to 27C.
Friday might experience a return of high temperatures, with conditions exceeding 30C in south-east England and reaching mid to upper 20s in other parts of England and Wales.
It remains quite warm throughout the weekend. Although it may be cloudy at times, particularly in the mornings during the next few days, there will still be plenty of sunlight for most people.
The absence of substantial rainfall in the coming week is another issue, particularly for farmers and cultivators, as well as for people living in regions facing dry conditions and restrictions on water usage.
The national drought group, comprising the Met Office, regulators, the government, and water companies, has stated that England is experiencing extensive environmental impacts due to the water shortage, affecting agriculture, harming wildlife, and leading to more frequent wildfires.
The group gathered on Tuesday while Yorkshire, Cumbria, and Lancashire, along with Greater Manchester, Merseyside, and Cheshire, the East Midlands, and the West Midlands faced dry conditions.
Northern England, Lincolnshire, and Northamptonshire, along with East Anglia, the Thames region, Wessex, the Solent, and the South Downs are currently categorized as regions experiencing extended dry weather, the stage preceding a drought.
Earlier than anticipated, droughts started this summer after an extended phase of minimal rainfall, marking the sixth most arid spring since record-keeping commenced in 1836.
Hundreds of thousands of individuals in England are currently subject to hosepipe restrictions designed to reduce water usage.
