Action first
How to cool a bedroom before sleep
Short answer
Keep daytime sun out, reduce heat sources, then flush the room with cooler evening air before bed.
What to do
- ✓Shade the bedroom during the day.
- ✓Turn off hot equipment and lights.
- ✓Ventilate when outside cools.
- ✓Use light bedding and cool yourself as well as the room.
Why it works
This advice follows UK Health Security Agency guidance and the underlying principles of solar gain and night ventilation.
Important exceptions
Safety, health, weather and the design of your home can change what is appropriate. Stop if an action makes conditions worse.
Related guides
Sources & evidence
Reviewed 2026-08-21
- UK Health Security Agency: Beat the heat: keep cool at home checklist ↗
Supports: Shading, ventilation, reducing indoor heat and protecting people at higher risk.
official guidance · Accessed 2026-08-21