At home
How to keep a UK home cooler
The most useful cooling work often happens before a room becomes hot. Reduce incoming heat during the day, then ventilate when the air outside is genuinely cooler.
Start by keeping heat out
Close blinds or curtains on windows receiving direct sunlight. External shutters or shades are even more effective where they are available because they stop more solar heat before it reaches the glass.
Turn off lights and electrical equipment that are not needed, and check that heating is fully off. Cooking and heat-producing appliances can add to an already uncomfortable room.
Treat windows as a timed control
An open window is useful when the air outside is cooler than the air indoors and there is a safe route for air to move through the home. When it is hotter outside, open windows can bring more heat in.
Early morning and later evening are often the best opportunities. Open windows on more than one side where it is safe to do so, then close them again as outdoor temperatures rise.
Use the coolest part of the home
Rooms on lower floors or away from strong afternoon sun may stay cooler. During a prolonged hot spell, consider moving daytime activities or sleeping arrangements to the coolest usable room.
A nearby library, place of worship or supermarket may offer a useful break if the home remains very warm. Check opening hours and access before travelling.
Use fans carefully
Fans move air and may improve comfort, but they do not reduce the room temperature. UKHSA advises using electric fans when the air temperature is below 35°C and avoiding aiming them continuously straight at the body because this may contribute to dehydration.
Use the forecast
Check when to open your windows