How to Sleep Cool: 15 Tips That Actually Work

Overheating at night wrecks your sleep — and not just in summer. Your body needs to drop its core temperature to fall asleep and stay asleep. When that doesn't happen, you toss, turn, and wake up feeling like you never rested.

The good news: you don't need to blast the AC all night. Here are 15 practical ways to sleep cooler, from simple bedroom tweaks to smarter mattress choices.

Why Sleep Temperature Matters

Your body temperature naturally drops in the evening as part of your circadian rhythm — this cooling process is a signal to your brain that it's time to sleep. If your environment is too warm, that process gets disrupted. You take longer to fall asleep, you wake more during the night, and you get less restorative deep sleep.

The sweet spot for most adults is a room temperature between 60–67°F (15–19°C). Some run warmer, some cooler — but staying within that range gives most people the best shot at uninterrupted sleep.

Bedroom & Environment Tips

1. Reverse Your Fan Direction

Don't just point a fan at yourself — position it to push warm air out of the room rather than circulate it. If you have a ceiling fan, set it to spin counter-clockwise in summer. This pulls hot air up and out instead of pushing it back down onto you.

2. Hang a Wet Sheet in Front of an Open Window

An old-school trick that still works: hang a damp sheet or towel in front of an open window. As the breeze passes through, it picks up cool moisture and lowers the room temperature naturally.

3. DIY Fan Cooler

Place a shallow bowl or pan of ice in front of a fan. The moving air picks up cold water vapor from the melting ice, creating a low-tech cooling mist. Works best in drier climates.

4. Unplug Electronics

Electronics generate heat even when idle. Chargers, TVs, gaming consoles — unplug anything you're not using before bed. It reduces the ambient heat in your room and cuts down on light pollution at the same time.

5. Block Out Heat With Curtains

Heavy, light-blocking curtains don't just keep the room dark — they also block radiant heat from windows. In LA's warm climate, this can make a real difference, especially in west-facing bedrooms that catch afternoon sun.

Bedding & Apparel Tips

6. Switch to Cotton Sheets

Satin, polyester, and microfiber sheets trap heat. Cotton — especially percale weave — is breathable and promotes airflow. Stick to lighter colors, which absorb less heat than dark ones. Bamboo sheets are another solid option: moisture-wicking and notably cool against skin.

7. Dress Light (or Go Bare)

Loose cotton or moisture-wicking sleepwear helps sweat evaporate and keeps you from overheating. Whether sleeping naked helps or hurts varies person to person — some find it cooler, others find sweat clings to sheets. Try both and see what works for you.

8. Use a Smaller Pillow

Your head generates a lot of heat. A larger, denser pillow traps it. Switching to a smaller pillow — or a buckwheat pillow, which has natural air channels — can make a noticeable difference. Avoid memory foam pillows if you sleep hot; they don't breathe well.

9. Try the Egyptian Method

Ancient Egyptians slept in damp linen. You don't have to go that far, but lightly dampening your top sheet or a light blanket before bed can provide a cooling effect as moisture evaporates during the night. Put a dry layer underneath to protect your mattress.

10. Sleep Spread Out

Body heat builds up where contact points occur. Sleeping spread out — rather than curled up or pressed against a partner — allows air to circulate around more of your body. Less contact = less heat retention.

Body & Routine Tips

11. Time Your Warm Bath Carefully

A warm shower or bath before bed actually helps — but timing matters. Done 1–2 hours before sleep, it raises your skin temperature temporarily, then triggers a sharp drop in core body temperature as you cool down. That drop signals your brain to sleep. Done right before bed, it can backfire and keep you warm.

12. Cool Your Feet

Your feet have a high concentration of blood vessels and pulse points close to the skin surface, making them effective heat radiators. Soaking your feet in cool water before bed — or keeping a cool, damp cloth nearby — can lower your whole body temperature quickly.

13. Drink Water Before Bed

Sweating at night depletes your fluids. A glass of water 30 minutes before sleep helps prevent dehydration and keeps you more comfortable. Keep it to about 8 oz so you're not waking up to use the bathroom at 2am.

14. Eat Light in the Evening

Your body generates more heat digesting heavy, protein-rich meals. A light dinner or early eating window means your body isn't working as hard metabolically when you're trying to fall asleep. Spicy foods, interestingly, can also cause temporary cooling through sweating — though the heartburn tradeoff rarely makes it worth it.

15. Sleep Solo When You Can

Body heat from a partner adds up. During particularly hot nights, spreading out across the whole bed or sleeping in a cooler room temporarily can make a real difference — no offense to anyone's sleeping companion.

How Your Mattress Affects Sleep Temperature

Tips and tricks only go so far. If your mattress traps heat, you'll fight it every night. Here's what to know:

• Memory foam mattresses tend to sleep the warmest — the dense foam traps body heat, especially in softer models that allow more body sinkage.
• Innerspring and hybrid mattresses sleep cooler — the coil core allows airflow through the mattress, and a thinner foam layer retains less heat.
• Latex mattresses are naturally breathable and don't conduct heat the way foam does. They're a strong choice for hot sleepers.
• Firmness matters too — softer mattresses cause more body sinkage, which increases surface contact and traps more heat. If you sleep hot, a firmer model typically sleeps cooler.

Many brands now offer hybrid mattresses that combine coil support with foam comfort layers — a good middle ground between pressure relief and temperature regulation. If you're shopping for a cooler sleep, it's worth testing mattresses in person. Our team at LA Mattress can walk you through the options that tend to sleep cooler for your body type and sleep style — visit any of our LA showrooms to try them out.

Cooling mattress toppers can also help if you love your current mattress but sleep warm — look for latex or gel-infused foam options rather than traditional memory foam.

Frequently Asked Questions

What is the best temperature for sleeping?

Most sleep experts recommend keeping your bedroom between 60–67°F (15–19°C). Cooler is generally better than warmer for sleep quality, though personal preference and factors like menopause or circulation issues can shift that range slightly.

Why do I wake up hot in the middle of the night?

Core body temperature naturally rises in the second half of the night as you approach morning. If your room is already warm or your bedding traps heat, this natural rise can wake you up. Keeping the room cool and using breathable bedding helps prevent this.

Does sleeping naked help you sleep cooler?

It depends on the person. For some, skin-to-sheet contact allows more heat to dissipate. For others, sweat clings to sheets more without clothing to wick it away. Loose cotton sleepwear is generally a reliable, moderate option.

What type of mattress is best for hot sleepers?

Innerspring, hybrid, and latex mattresses tend to sleep cooler than all-foam models. Look for mattresses with coil cores, open-cell foams, or cooling cover materials. Firmer models also sleep cooler since less body sinkage means less heat trapping.

Can a mattress topper make me sleep cooler?

Yes — the right one can. Latex and gel-infused toppers tend to sleep cooler than traditional memory foam. Avoid dense, thick toppers if heat retention is your concern.

Still sleeping hot? It might be time to look at your mattress. Come into any LA Mattress showroom and try our cooling options in person — our staff can help you find a mattress that actually lets you sleep cool, not just claims to.