The UK is facing one of its most severe heat events on record, with the Met Office issuing a rare red weather warning for Wednesday and Thursday as temperatures are expected to surge towards 40C in parts of England and Wales.
Met Office has issued a rare red weather warning, the highest level
The warning, the highest level issued by the Met Office, signals dangerous conditions that could pose a risk to life and cause widespread disruption.
Covering southern Wales and a large swathe of England including London, the south-east, the Midlands, and parts of East Anglia – the alert comes as forecasters predict extreme heat combined with high humidity.
Alongside this, the UK Health Security Agency (UKHSA) has issued a red heat health alert across six regions of England, warning of serious impacts not just for vulnerable groups but also for healthy individuals.
The alert is in place from 1am on Wednesday until 11pm on Thursday and marks only the second time such a warning has been issued, following the record-breaking heatwave of July 2022.
Temperatures are expected to exceed 37C and in some areas nearing 40C
According to the Met Office, temperatures are expected to exceed 37C for two to three consecutive days, with some areas potentially reaching between 38C and 40C.
Uncomfortably warm nights, driven by high humidity, are likely to offer little relief, increasing the risk of heat-related illness.
Forecasters have warned that the combination of intense heat and humidity could significantly impact daily life, urging people to adapt routines and take precautions to stay safe.
This is only the second time such a warning has been issued, following the record-breaking heatwave of July 2022
A red weather warning indicates both a high likelihood of extreme conditions and severe consequences. Authorities have cautioned that the heatwave could lead to:
- Increased health risks, including heat exhaustion and heatstroke
- Disruption to transport networks, including rail and road infrastructure
- Strain on energy supplies and potential power outages
- Damage to infrastructure due to overheating
Experts say the UK remains ill-prepared for such extremes. Professor Bill McGuire of University College London warned that the country’s infrastructure, healthcare system, and housing are not designed for sustained high temperatures, raising concerns about power failures, transport chaos, and pressure on emergency services.
Schools and services adapt during these extreme weather conditions
As temperatures rise, schools across England are already making adjustments. Some have shortened school days, while others are relaxing uniform rules, limiting outdoor activities, and ensuring pupils have access to water and cooler environments.
Education leaders have called for urgent government action to modernise school buildings, particularly improving ventilation and considering air conditioning, as hotter summers become more common.
The Met Office’s red warning urges immediate action, advising the public to stay hydrated, avoid peak heat hours, and check on vulnerable individuals.
An amber warning, covering much of the rest of England and Wales, also highlights significant risks, though at a slightly lower level.
