Staying safe in hot weather

Most of us enjoy warmer weather, but when there are several days of unusually hot weather, it can affect your health.  

Some people may develop heat exhaustion (feeling unwell and tired due to heat). if heat exhaustion isn't dealt with quickly, it can become a heat stroke, which is a serious medical emergency.

Who is most at risk?

Heat can affect anyone, but be very careful if you:

  • Are over 65 years old
  • Have heart, breathing, or kidney problems
  • Take multiple medicines
  • Are pregnant or caring for young children
  • Are bedbound or have difficulty keeping cool
  • Spend a lot of time outdoors or in top-floor flats
  • Have asthma or other breathing problems (air pollution often gets worse during hot weather)

Knowing the symptoms and taking simple steps can keep you and your community safe.

Symptoms of heat exhaustion

Act fast if you or anyone you know is;

  • Extremely tired or weak
  • Having a headache
  • Heart beating faster than normal
  • Running a high temperature

What to do: Get to somewhere cool, drink water, and rest. You should start to feel better within 30 minutes.

Symptoms of heat stroke (a medical emergency)

Act fast if you or anyone you know is;

  • Confused or not making sense
  • Losing consciousness
  • Having seizures or fits
  • Not sweating, despite a very high temperature (above 40°C)

What to do: Call 999 immediately. Do not wait.

Heat safety checklist for everyone

  • Keep out of the heat – stay indoors or in the shade, especially between 11am and 3pm
  • Cool yourself down – drink plenty of water, avoid alcohol and hot drinks, take cool showers
  • Protect yourself from the sun – wear sunscreen (SPF 30+), a wide-brimmed hat, sunglasses, and light-coloured loose clothing
  • Keep your living space cool – close windows during the day, open them at night when it's cooler
  • Look after vulnerable people – check on older relatives, neighbours, and friends regularly
  • Know the warning signs – watch for the symptoms listed above so you can act quickly

Look after your mental wellbeing

Hot weather can also affect your mental health and mood. If you're feeling stressed or anxious, reach out to friends, family, or a healthcare professional. Remember to take care of your mind as well as your body.

Get help

  • NHS 111 – for health advice (available 24/7)
  • 999 – for emergencies (or go to your nearest A&E)
  • Your GP – for concerns about your health in hot weather

Keep cool. Stay hydrated. Look out for those around you.

More information and support

For more guidance on staying safe in hot weather, visit: NHS Heatwave guidance