9 Smart Ways to Keep Your Bedroom Cool in a Heatwave
Here in the UK, we’re no strangers to complaining about the weather — it’s too cold in winter and far too hot in summer! With temperatures climbing above 25–30 degrees during a heatwave, many of us are left tossing and turning in bedrooms that feel more like saunas than sanctuaries.
While we can’t all have air conditioning, there are plenty of simple tricks that can make your bedroom cooler and your sleep much more bearable. At Redrose, we’ve gathered nine of the best (and most practical!) ways to beat the heat indoors.
9 Smart Ways to Keep Your Bedroom Cool in a Heatwave
1. Keep the Sun Out During the Day
It may feel instinctive to fling open the curtains in the morning, but direct sunlight is your worst enemy when trying to keep your bedroom cool. Shut blinds and curtains when the sun’s blazing, and if you have venetian blinds, tilt them upwards so the heat bounces away.
If you want to go one step further, consider reflective window film — far more sensible than some of the stranger “hacks” we’ve seen online (yes, people really do suggest smearing yoghurt on your windows… we’ll pass on that one).
2. Let the Cool Night Air In
Daytime windows closed, nighttime windows open — that’s the golden rule. As temperatures dip after sunset, throw open the windows to let in the cooler breeze. To maximise the effect, hang a damp sheet in front of the window — it acts like natural air conditioning.
3. Create a Cross-Breeze
If you’ve got two windows in the room (or across the house), you can create a cross-draught. Place one fan blowing air into the room and another facing outwards — this pushes the hot air out and pulls cooler air in. The airflow not only cools the space but also helps keep mosquitoes at bay.
4. Ditch the Wrong Bedding
Heavy duvets and polyester sheets will trap heat. Swap them for lightweight cotton or linen, which breathe better and wick away sweat. A 4.5 tog summer duvet (or even just a sheet) works wonders. The same goes for pyjamas — natural fabrics only.
5. Switch Off Heat-Producing Appliances
It’s surprising how much extra warmth comes from light bulbs, laptops, and chargers left plugged in. Upgrade to LED bulbs, and make it a habit to turn everything off before bed. Your room — and your electricity bill — will thank you.
6. Take a Tepid Shower Before Bed
An icy shower might sound appealing, but it actually makes your body work harder to warm up again. Instead, go for lukewarm water. It gently lowers your body temperature and signals to your brain that it’s time to wind down. Even a quick soak of the feet in warm water can draw heat away from the core.
7. Keep Curtains Slightly Open at Night
This one feels counterintuitive, but if your windows are open, leaving curtains slightly ajar allows cooler night air to circulate more freely. Fully closed curtains can trap heat in the room, while a small gap helps fresh air move around — especially when combined with a cross-breeze.
8. Cool Your Bed Before You Get In
Pop your pillowcase in the freezer for half an hour before bed, or fill a hot water bottle with cold water and place it near your feet. Both tricks help reduce your body temperature just enough to nod off more comfortably.
9. Stay Low
Heat rises, so if your bedroom is in the loft or higher floors, you’ll naturally feel hotter. If possible, move your mattress to a lower level in the house during a heatwave — even just camping out on the sofa downstairs can be cooler than a sleepless night upstairs.
Final Thoughts – 9 Smart Ways to Keep Your Bedroom Cool in a Heatwave
You don’t need air conditioning to survive a British heatwave (although many of us secretly wish for it!). With these simple changes — from shutting out the sun during the day to using clever cross-breezes at night — you’ll find your bedroom far more bearable.
At Redrose, we know how important it is for your home to feel comfortable year-round. Whether you’re buying, selling, or simply looking for ways to love where you live, we’re always here with helpful advice.
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9 Smart Ways to Keep Your Bedroom Cool in a Heatwave