Sleeping Too Hot
Sleeping too hot isn't just uncomfortable. Your body needs its core temperature to drop to fall asleep and stay in deep sleep, so a hot bed means tossing, kicking off covers and waking at 2 a.m. The good news: most of the fixes are cheap, and the best ones are simple.
We ranked these fixes by how directly they remove heat from where you're lying, how much they help on a typical hot night, and how many nights they keep working. That's an editorial judgment, not a lab test. If you want to know why you're running hot in the first place, start with the nine causes of sleeping hot.
The 12 fixes, ranked
Cool the sleep surface itself
Your mattress sits against most of your body all night. If it holds heat, cooling the air only goes so far. Active cooling (a water-based topper or pad) keeps removing heat; passive gel or 'cooling' fabric helps briefly.
Why it ranks here: Targets the main heat source directly
Set the bedroom to about 60–67°F
That's the range Cleveland Clinic suggests for most adults. Program the thermostat to start dropping an hour before bed.
Why it ranks here: Lowers the baseline for everyone in the room
Swap to breathable bedding
Cotton percale or linen sheets and a light blanket in place of flannel and a heavy duvet. Keep one layer you can push off half asleep.
Why it ranks here: Cheap, fast, and helps every other fix work
Move air
A fan across the bed (not just at the ceiling) speeds evaporation from your skin. Crossflow from two open windows works on cool nights.
Why it ranks here: Big effect for little money
Block daytime heat
Close blinds or curtains on sunny windows during the day so the room doesn't bake before bedtime.
Why it ranks here: Prevents the problem instead of fighting it
Take a lukewarm shower 1–2 hours before bed
Warming the skin then letting it cool helps your core temperature fall, the same dip your body uses to start sleep.
Why it ranks here: Works with your body's own rhythm
Finish alcohol 3 hours before bed
Alcohol flushes the skin and disrupts sleep later in the night.
Why it ranks here: Removes a common 3 a.m. wake-up
Eat dinner earlier and lighter
Digesting a big or spicy meal produces heat; aim to finish 2–3 hours before bed.
Why it ranks here: Small but real
Wear less, or wear wicking fabric
Light, moisture-wicking sleepwear or nothing at all.
Why it ranks here: Free
Separate blankets for couples
Two lighter blankets mean the warmer sleeper isn't trapped under the colder sleeper's duvet. Dual-zone systems go further.
Why it ranks here: Ends the duvet tug-of-war
Use your pillow wisely
Flip to the cool side, or choose a pillow that doesn't trap heat; a chilled pillowcase helps for a few minutes.
Why it ranks here: Short-term relief
Ice packs and cold water bottles
A frozen water bottle by your feet or a cold pack wrapped in cloth gives quick relief on the worst nights. Don't put ice directly on skin.
Why it ranks here: Emergency fix, not a plan
Cooling the bed vs cooling the room
| Cool the bedroom | Cool the bed | |
|---|---|---|
| What it targets | Air temperature | The surface touching your body |
| Works when it's hot outside? | Only with AC | Yes |
| Couples with different needs | One setting for both | Dual-zone options let each side differ |
| Running cost | Cools the whole room or house | Cools just the bed |
Good Sleep breaks this down in more detail in its guide to cooling your bed vs your bedroom. For the numbers on the room, see this article on the ideal bedroom temperature.
Fix #1, done properly
This site is run by Good Sleep, so here's our product, facts from trygoodsleep.com: a water-based topper that lies on your existing mattress and cools to 62°F (or heats to 110°F in winter). It reaches your setting in about 15 minutes and holds it all night. Quieter than a ceiling fan, says Good Sleep. No app, no Wi-Fi, no subscription. $1,479 one-time, 30-night trial.
Visit Good Sleep
Shop now: Good Sleep cooling & heating topper →When to see a doctor
Feeling too hot at night is usually about your bed and room. See a doctor if it's new and you can't explain it, if you're waking up soaked in sweat, or if it comes with fever, weight loss, a racing heart, or hot flashes. Cleveland Clinic and Mayo Clinic list hormone changes, thyroid problems, infections and medications among possible causes. In a heat wave, seek urgent care for confusion, fainting or a very high body temperature.
FAQ
What should I do if I'm sleeping too hot?
Start with the biggest heat source. For most people that's the bed: swap to breathable bedding and consider active cooling for the sleep surface. Then bring the room to about 60–67°F, add moving air, and cut late alcohol and big dinners.
What temperature is too hot to sleep?
There's no single cut-off, but Cleveland Clinic suggests a bedroom of roughly 60 to 67°F for most adults. Above the low 70s, many people start sleeping lighter and waking more.
Can sleeping too hot cause nightmares?
Heat can fragment sleep and lead to more awakenings, which may mean you remember more dreams. The evidence that heat directly causes nightmares is limited. Frequent distressing nightmares are worth discussing with a doctor.
Is sleeping too warm bad for you?
An occasional hot night isn't harmful, but regularly sleeping too warm can mean lighter, more broken sleep. In very hot weather, overheating can become a health risk, especially for older adults.
How do I cool down my room without AC?
Block sun during the day, open windows when it's cooler outside, run fans to create crossflow, and cool the bed itself rather than the whole room.
Is it better to cool the bed or the bedroom?
Both matter, but cooling the bed targets the heat that's actually building up against your body, and it works even when the room is warm.
Do cooling mattress toppers actually work?
Passive toppers (gel, cooling fabrics) feel cool at first, then warm up as they absorb heat. Active systems that circulate water can keep the surface at a set temperature all night.
Why do I sleep too hot but my partner doesn't?
Body size, muscle mass, hormones and bedding all differ. Separate blankets or a dual-zone setup solve most couple temperature fights.
More posts
Can Sleeping Too Hot Cause Nightmares?Does a hot bedroom cause nightmares? What heat does to sleep and dreaming, what the evidence does and doesn't show, and when nightmares need a doctor.
- Room Too Hot to Sleep? Fixes That Cost Under $50
Cheap ways to cool a room that's too hot to sleep in: blinds, crossflow, fans, sheets, frozen bottles and timing, all for under $50.
Cooling the Bed vs Cooling the Bedroom: Which Matters More?Should you cool the bed or the bedroom? How each works, cost, couples and comfort, and why most hot sleepers need both.
Sources
- Cleveland Clinic: The ideal sleeping temperature for your bedroom
- MedlinePlus (NIH): Healthy sleep
- Mayo Clinic: Night sweats, causes
- Cleveland Clinic: Hyperthyroidism
By the Good Sleep team · Not medical advice