Research suggests that sleeping in a slightly cooler room can lead to deeper, more restful sleep. A commonly cited “sweet spot” is around 65°F (about 18°C). But of course, not everyone has central air—or even a bedroom AC unit—especially when summer nights turn your home into a warm box.
So when the air outside is hot and the inside feels even hotter, how do people cool things down without spending money?
The Wet Towel on the Windowsill Trick
Fans can help, but there’s a low-effort, old-school hack many people swear by:
Place a damp towel on your bedroom windowsill and crack the window open.
The idea is simple. As air moves in through the open window, it passes over the damp towel. That moisture can help cool the incoming breeze, making your room feel a bit more comfortable—especially if there’s already some airflow outside.
Important note: the towel should be damp, not dripping, so you don’t end up with water damage, soggy wood, or a damp-smelling room.
Another Free Cooling Hack: Chill Your Pillowcase
If you’ve ever flipped your pillow to find the “cold side,” you already understand the appeal of this one.
Another simple trick is to put your pillowcase in the fridge or freezer before bed. When you lie down, the cool fabric can help your body feel less overheated right away—especially if you tend to run warm at night.
It’s a small change, but on sticky summer nights, it can feel like a lifesaver.
Why People Love These Hacks
The best part is they’re:
- Free
- Easy
- Low-tech
- Fast to try
And even a slight drop in perceived temperature can make it easier to fall asleep when the heat is messing with your comfort.
Final Thought
If your bedroom feels warmer than you’d like during summer, try the damp towel method, the chilled pillowcase trick—or both together—for a cooler, more comfortable night.
And if you’re looking for another simple sleep habit upgrade, some people also recommend sleeping with your bedroom door closed for better overnight conditions and safety.
