First Aid – How to Survive a Heatwave

The hot weather is something we all welcome as we head for the summer clothing to wear and set our target on the local park or beach to parade our new found sun tan. But when it’s too hot for too long there are health risks. If a heatwave hits this summer, make sure the hot weather doesn’t harm you or anyone you know.

How to Survive a heatwaveThe very young, the elderly and the seriously ill are the groups who are particularly at risk of health problems when the weather is very hot. In particular, very hot weather can make heart and breathing problems worse. A heatwave might sound like fun, but even in the UK heatwaves can kill people by pushing the body beyond its limits. Most heat disorders occur because the victim has been over-exposed to heat or has over-exercised for his or her age and physical condition.

And it could well get worse. Research conducted by the Met Office shows that hotter summers are here to stay for the foreseeable future.

The Public Health England’s heatwave plan 2013 (PDF, 923kb) has advice on how to cope during a heatwave. Knowing how to keep cool during long periods of hot weather can help save lives.

When heat becomes a problem

An average temperature of 30°C by day and 15°C overnight would trigger a health alert (this figure varies slightly around the UK). These temperatures can have a significant effect on people’s health if they last for at least two days and the night in between.

The Meteorological Office has a warning system that issues alerts if a heatwave is likely. Level one is the minimum alert and is in place from June 1 until September 15 (which is the period that heat wave alerts are likely to be raised).

  • The minimum alert simply means that people should be aware of what to do if the alert level is raised.
  • If a level two alert is issued, there is a high chance that a heat wave will occur within the next few days.
  • The level three alert is when a heat wave is happening.
  • The level four alert is when a heat wave is severe.

Why is a heatwave a problem?

The main risks posed by a heat wave are:

  • dehydration (not having enough water)
  • overheating, which can make symptoms worse for people who already have problems with their heart or breathing
  • heat exhaustion
  • heatstroke

Who is most at risk?

A heat wave can affect anyone, but the most vulnerable people in extreme heat are:

  • Older people, especially those over 75
  • Babies and young children
  • People with a serious chronic condition, especially heart or breathing problems
  • People with mobility problems, for example people with Parkinson’s disease or who have had a stroke
  • People with serious mental health problems
  • People on certain medications, including those that affect sweating and temperature control
  • People who misuse alcohol or drugs
  • People who are physically active, for example labourers or those doing sports

Tips for coping in hot weather

The following advice applies to everybody when it comes to keeping cool and comfortable and reducing health risks:

  • Shut windows and pull down the shades when it is hotter outside. If it’s safe, open them for ventilation when it is cooler.
  • Avoid the heat: stay out of the sun and don’t go out between 11am and 3pm (the hottest part of the day) if you’re vulnerable to the effects of heat.
  • Keep rooms cool by using shades or reflective material outside the windows. If this isn’t possible, use light-coloured curtains and keep them closed (metallic blinds and dark curtains can make the room hotter).
  • Have cool baths or showers, and splash yourself with cool water.
  • Drink cold drinks regularly, such as water and fruit juice. Avoid tea, coffee and alcohol.
  • Stay tuned to the weather forecast on the radio or TV, or at the Met Office website.
  • Plan ahead to make sure you have enough supplies, such as food, water and any medications you need.
  • Identify the coolest room in the house so you know where to go to keep cool.
  • Wear loose, cool clothing, and a hat if you go outdoors.
  • Check up on friends, relatives and neighbours who may be less able to look after themselves.

How do I know if someone needs help?

If someone feels unwell, get them somewhere cool to rest. Give them plenty of fluids to drink.

More information on: First Aid Advice on Heatstroke

If symptoms such as breathlessness, chest pain, confusion, weakness, dizziness or cramps get worse or don’t go away, seek medical help.

The Department of Health has produced a leaflet about keeping well in hot weather. To order a copy of Heat wave: looking after yourself and others during hot weather, call 0300 123 1002 or visit .

You can also download Heatwave: looking after yourself and others (PDF, 101kb) to read online.

dehydration – GK First Aid Training offer a number of First Aid Courses that deal with the condition of dehydration. We offer both the 1 Day Emergency First Aid at Work and the 3 Day First Aid at Work Course. Both of these courses can be delivered directly to you in your workplace. Call us directly on 0800 774 7034 to discuss your requirements.