England, United Kingdom – Southern England faces life-threatening temperatures as authorities issue rare red warnings and widespread disruptions
More than 300 schools across England and Wales are set to close partially or fully as the United Kingdom faces one of the most intense heatwaves in its history, with temperatures expected to reach as high as 39°C in parts of southern England.
Authorities have issued a rare red extreme heat warning covering large areas of England and Wales from Wednesday morning until Thursday night. The warning signals a significant danger to life, with officials urging residents to take precautions as soaring temperatures and high humidity create hazardous conditions across the country.
The heatwave has already shattered temperature records in several regions. On Tuesday, the highest temperature recorded in the UK was 34.6°C in Wisley, Surrey. Northern Ireland experienced its hottest day of the year at 28.1°C, while Scotland reached 29°C and Wales recorded a high of 32.2°C.
Meteorologists expect conditions to worsen over the coming days as a persistent area of high pressure, known as a “heat dome,” traps hot air over the country. Forecasters say temperatures could rise to between 37°C and 39°C in southern England, potentially breaking the UK’s highest June temperature record of 35.6°C, set in 1976.
The Met Office warned that high humidity levels would make conditions feel significantly hotter than the actual air temperature. In some areas, temperatures of 35°C could feel closer to 41°C, increasing the risk of heat-related illnesses such as heat exhaustion and heatstroke.
The red warning highlights the possibility of serious health impacts across all age groups, including healthy adults. Authorities have stressed that the threat extends beyond traditionally vulnerable groups such as the elderly, children and those with existing medical conditions.
The UK Health Security Agency (UKHSA) has also issued a red heat-health alert, marking only the second time such a warning has been declared. The agency warned that the extreme conditions could result in increased deaths, severe health complications and additional pressure on public services.
Professor Robin May, Chief Scientific Officer at the UKHSA, described the heatwave as a widespread threat capable of affecting even fit and healthy individuals. He urged people to limit outdoor activities, remain hydrated and seek cooler environments whenever possible.
Healthcare providers are preparing for a surge in emergency calls and hospital admissions. NHS officials have warned that demand for ambulance services and emergency departments is likely to increase significantly during the peak of the heatwave.
The extreme temperatures have forced hundreds of schools to alter their schedules. More than 300 schools across England and Wales are planning either full or partial closures, while many others are ending classes early to protect students and staff from the dangerous heat.
Several schools have relaxed uniform requirements, allowing pupils to wear sports clothing instead of traditional uniforms. Although the Department for Education generally advises schools to remain open, it has issued guidance on managing high indoor temperatures and ensuring student safety.
Transport networks are also facing major disruptions. National Rail has advised passengers to avoid non-essential travel and carry sufficient drinking water during journeys.
GTR, the UK’s largest rail operator, announced the temporary suspension of Gatwick Express services during the hottest parts of Wednesday and Thursday. Safety-related speed restrictions will also affect Thameslink, Great Northern and Southern services, resulting in reduced schedules and possible delays.
Other operators, including Avanti West Coast and Chiltern Railways, have reduced train services as engineers monitor tracks and overhead power lines. Extreme heat can cause rail tracks to expand and buckle, while overhead electrical lines may sag, creating safety concerns and operational challenges.
Road users are also being warned to prepare for difficulties. The RAC said vehicle breakdowns are expected to rise significantly as engines, batteries and cooling systems come under increased strain from the exceptional temperatures.
Military ceremonies have not been spared from the disruption. Ceremonial guard changes in London and Windsor have been cancelled for several days to protect soldiers, horses and spectators from heat-related risks.
The current heatwave follows severe thunderstorms that swept across parts of England earlier in the week. The Met Office recorded approximately 29,000 lightning strikes overnight, causing flash flooding, travel delays and power outages in several regions.
Emergency services responded to hundreds of incidents linked to the storms. The London Fire Brigade reported receiving around 400 emergency calls, while lightning strikes were believed to have caused house fires in London and Bristol.
Power disruptions were also reported in south-west England, leaving hundreds of homes temporarily without electricity.
Experts say the immediate cause of the extreme heat is the stagnant heat dome system, but scientists also point to the broader influence of climate change. Research shows that Europe is warming faster than many other parts of the world, increasing both the frequency and intensity of heatwaves.
According to climate experts, Europe has warmed by approximately 0.56°C per decade over the past 30 years. This long-term trend is contributing to more severe weather extremes and raising concerns about future summers across the continent.
The United Nations recently warned that global temperatures are likely to remain at or near record levels over the coming years, increasing the likelihood of extreme weather events worldwide.
As Britain enters what could become one of its hottest June periods on record, authorities continue to urge residents to stay indoors during peak temperatures, drink plenty of water, check on vulnerable relatives and neighbours, and avoid unnecessary travel whenever possible.
With record-breaking heat expected to persist through the week, emergency services, transport operators and local authorities remain on high alert as the nation confronts the growing challenges posed by extreme weather.
This article was created using automation technology and was thoroughly edited and fact-checked by one of our editorial staff members