If you’ve ever tried to survive a UK heatwave in a typical British home, you’ll know the struggle is real.
Our houses are built to trap heat — not keep it out. And most of us don’t have air con. So when the temperature hits 30ºC or more, the inside of your house starts feeling like a greenhouse with a grudge.
But the good news? There are plenty of ways to cool your house down without spending loads or changing how you live.
Here’s what worked for us as a busy UK family trying not to melt.
🛏️ 1. Keep Curtains and Blinds Closed During the Day
It might feel counterintuitive, but keeping the sunlight out is key.
- Shut curtains, blinds, or blackout shades in any room that gets direct sun
- Light-coloured curtains or reflective linings work best
- Bonus: Use tinfoil or reflective window film for extra insulation
You’re basically creating shade for your house.
❄️ 2. Open Windows Strategically at Night and Early Morning
Let cool air in when it’s actually cool.
- Open windows around 9pm to 7am, when outside temps drop
- Create cross-ventilation by opening windows on opposite sides of the house
- Use fans to pull cooler air in and push warm air out
Then close everything up again by 8am to trap the cooler air.
🛋️ 3. Swap Duvets for Sheets and Breathable Bedding
Say goodbye to your 10.5 tog duvet. Even 4.5 tog is too much in a heatwave.
- Sleep under cotton sheets or muslin throws
- Use pillowcases made of linen or bamboo for better airflow
- Keep a spray bottle of cold water by the bed for misting
Cooler sleep = better mornings with kids.
💨 4. Make a DIY Air Cooler with a Fan and Ice
No air con? No problem. Try this:
- Place a bowl of ice or a frozen water bottle in front of a desk fan
- Angle the fan to blow over the ice
- It creates a chilled breeze (surprisingly effective for bedtime)
You can also freeze a damp flannel and lay it over your face or neck.
🏡 5. Block Heat from the Loft and Roof
Lofts act like ovens. And hot air rises.
- Lay thick blankets or reflective foil over the loft hatch
- If possible, insulate the loft door with weather-stripping
- Keep upstairs doors closed to stop heat travelling
This simple trick made our upstairs rooms feel 2-3ºC cooler.
🌲 6. Plant or Hang Outdoor Shade
If you’ve got a south-facing wall or patio doors, create some DIY shade.
- Use an old sheet, sailcloth or even towels pegged to fences
- Put up a parasol outside your window or door
- Plant fast-growing climbers like clematis or ivy to shield walls
Shade the outside, and you cool the inside.
💧 7. Avoid Cooking Inside If You Can
Ovens, hobs, and even kettles can heat up small kitchens fast.
- Batch cook early in the morning or use a slow cooker outside
- Try BBQs or cold meals
- Skip the dryer—let clothes air dry outside
Less heat = less suffering.
🎧 8. Use a White Sheet Over Furniture or Floors
If your sofa or floors get blasted by sun, cover them in a light cotton or white sheet.
It reflects heat and protects surfaces from absorbing warmth. It’s not stylish, but it works.
Same goes for car seats, by the way.
🌬️ 9. Buy (Or Borrow) a Proper Fan
Yes, fans are obvious. But the right one makes all the difference.
- Tower fans are great for bedrooms
- Box fans can be angled at windows for airflow
- Check local FB groups or lending libraries if you don’t want to buy one
If your fan has a rotation mode, use it at night with a timer plug.
⏳ 10. Think Long-Term: Cheap Heatwave Prep for Future You
If heatwaves are becoming the norm, consider these low-cost upgrades:
- Thermal or blackout blinds for key rooms
- Reflective window film for conservatories or lofts
- Ceiling fans in bedrooms (easy to DIY if you’re handy)
- Loft insulation – better for winter and summer
Small changes now = cooler summers ahead.
🤝 Final Thoughts: You Don’t Need Air Con to Stay Cool
Staying cool in a British heatwave is all about timing, airflow and blocking heat.
You don’t need to suffer. You don’t need to spend hundreds. And you definitely don’t need to sleep on a wet towel (unless you want to).
These tricks are cheap, practical and kid-friendly. Pick 3–4 and try them this week.
Then go enjoy that sunny garden.





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