The UK Health Security Agency has raised its South West heat-health alert from yellow to amber, warning high temperatures pose a greater risk to vulnerable people and urging health and social care services to prepare as conditions continue to heat up.
An amber Heat-Health Alert is now in place for the South West until 5pm on Thursday 28 May 2026.
Under UKHSA and the Met Office's Weather-Health Alerting System, an amber Heat-Health Alert means that impacts will likely include:
- increased use of health care services by vulnerable populations
- an increase in risk to health for individuals aged over 65 years or those with pre-existing health conditions, including respiratory and cardiovascular diseases
Dr Chaam Klinger, Consultant in Health Protection at UKHSA South West, said:
"We want those living in and visiting the South West, particularly for half term to enjoy the good weather this week. However, we know that even moderate heat can lead to serious health problems, especially for older people and those with certain health conditions, so it's important that everyone takes simple precautions while enjoying the warm weather over the coming days.
"If you have friends, family or neighbours who are more vulnerable, it is important to check in on them and ensure they are aware of the forecasts and are following the necessary advice."
The South West's coastline, rivers and open water also present additional risks during hot weather. Cold-water shock can affect even strong swimmers when entering cold water on a hot day, and water-related incidents typically increase during periods of high temperature.
People are advised to swim only at designated, supervised locations and to keep a close eye on children near any open water.
There are simple steps you can take to keep yourself and others safe during periods of hot weather, such as:
- keeping your home cool by closing windows and curtains in rooms that face the sun
- if you do go outside, cover up with suitable clothing, such as an appropriate hat and sunglasses, and seek shade and apply sunscreen regularly
- keeping out of the sun at the hottest time of the day, between 11am and 3pm
- if you are going to do a physical activity (for example, exercising or walking the dog), plan to do these during times of the day when it is cooler, such as the morning or evening
- knowing the symptoms of heat exhaustion and heatstroke and what to do if you or someone else has them
Our UKHSA data dashboard provides the latest details on HHAs currently in place, their duration, while our latest blog details how exactly heat impacts the body and what we can do avoid the negative effects.

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