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Best Temperature for Sleep
The best temperature for sleep sits inside a narrow window that most homes overshoot every night, and Dr. Avinesh Bhar, Board-Certified Sleep Physician at SLIIIP.com, sees how much daytime energy a few degrees can return to a person’s life.
Most adults sleep best in a bedroom between 60 and 67 degrees Fahrenheit, roughly 15 to 19 degrees Celsius.
SLIIIP’s board-certified sleep physicians can do sleep evaluations for sleep apnea. Virtual consultations in all 50 states. Home sleep tests shipped to your door.
Why Bedroom Temperature Matters So Much
Your body runs on a daily rhythm. Core body temperature drops a small amount each night to help you fall asleep. It stays low through the deepest hours and rises again toward morning. A cool room helps that natural drop happen. A warm room blocks it.
This is why a hot bedroom can leave you tossing, sweating, and waking up tired even after eight hours in bed. The data is clear in sleep labs around the world. People fall asleep faster and stay asleep longer in cooler rooms.
According to the Centers for Disease Control and Prevention, about one in three adults in the U.S. does not get enough sleep. For many of them, a small change to room temperature could move the needle without any new product or pill.
If you wake up tired despite having enough hours, see sleep 8 hours still tired and why do I wake up tired.
The Best Temperature for Sleep by the Numbers
Most sleep research lands in the same range. There is no single magic number, but the band is narrow.
- Adults. 60 to 67 degrees Fahrenheit, or 15 to 19 degrees Celsius
- Babies. 68 to 72 degrees Fahrenheit, or 20 to 22 degrees Celsius
- Older adults. Slightly warmer, around 65 to 70 degrees Fahrenheit
- People going through menopause. Often need the lower end of the adult range
The best temperature for sleep is cool, not cold. A cold room can wake you up just as much as a warm one. The goal is a setting where you feel comfortable under light bedding.
For a wider look at small habits that move sleep quality, see your ultimate sleep routine guide and reasons for improving the quality of sleep.
How Body Temperature Drives Sleep Stages
Your body temperature is not just background noise. It guides the whole sleep cycle.
- Falling asleep. Your body releases heat through the hands and feet. A cool room helps this happen.
- Deep sleep. Core temperature stays low. Deep sleep is when the body repairs tissue and the brain clears waste.
- REM sleep. Your body loses some control of temperature in this stage. A warm room can cut REM short.
- Morning wake up. Core temperature rises. Light and sound feel sharper. The day begins.
For more on deep sleep, see how do I get more deep sleep and how to improve core sleep.
Signs Your Room Is Too Warm
The numbers help, but your own signals matter more. Watch for these clues that your bedroom is running too hot.
- You sweat at night
- You kick off the covers more than once
- You flip the pillow to find a cool side
- You wake up at 2 or 3 a.m. and cannot fall back asleep
- Your morning headaches show up often
- Your sheets feel damp on waking
If 2 a.m. wake ups are common for you, see waking up at 2 a.m..
Signs Your Room Is Too Cold
A cold room is less common but still a real problem.
- You wake up shivering
- Your feet feel like ice and stay cold
- You curl up tight and cannot relax
- Your nose feels stuffy from cold air
- Your partner sleeps fine but you do not
The fix is rarely cranking up the heat. Layering bedding and warming the feet works better than warming the whole room.
How to Hit the Best Temperature for Sleep
You do not need a smart system to find your sweet spot. A few cheap tools and small habits get you there fast.
1. Set the Thermostat at Night
Pick a target around 65 degrees Fahrenheit and adjust from there. If you share a bed with a partner who runs hot or cold, start in the middle and use bedding to bridge the gap.
2. Use a Fan or Air Mover
A fan does two things. It moves cool air over your skin, and it adds a steady sound that masks small noises. White noise alone can also help. See sleep sounds and meditation.
3. Pick Breathable Bedding
- Sheets. Cotton, linen, or bamboo for warm sleepers. Flannel for cold sleepers.
- Duvets. A lower fill weight in summer. Higher in winter.
- Pillows. A cooling cover or buckwheat fill helps hot sleepers.
For other tools, our sleep products page lists options.
4. Try a Warm Shower 90 Minutes Before Bed
This sounds backward but works. A warm shower pulls blood to the skin. Once you step out, you cool down faster. This drop in body temperature signals sleep.
5. Cool Your Feet and Hands
Your hands and feet release heat best. Wearing light socks if your feet are cold, or letting them stick out of the blanket if they are warm, can shift your sleep faster than anything else. This sounds small. It is one of the most powerful tools you can use.
6. Block Heat From Light and Devices
- Close blinds in the late afternoon during summer
- Move chargers away from the bed
- Pick a TV free bedroom when possible
- Turn off electronics that run warm
7. Time Your Workout
Heavy workouts late in the day raise your core temperature for hours. Try to finish hard training at least three hours before bed.
8. Think About Diet
- Big late meals raise body heat
- Spicy foods raise body heat
- Alcohol seems sedating but disrupts temperature control
- A small protein snack two hours before bed can help
For more on weighted blankets, which run warmer than some sleepers expect, see weighted blanket benefits.
Best Temperature for Sleep by Life Stage
Your sweet spot can shift with age and life events.
Babies and Young Kids
A baby’s room should be slightly warmer, around 68 to 72 degrees Fahrenheit, with light, breathable layers. Overheating is a known risk in infants. Talk to your pediatrician for guidance.
Teens and Young Adults
Most teens do well in the standard 60 to 67 degree range. Their main issue is screen heat and irregular schedules, not the thermostat.
Adults With Insomnia
Being cooler often helps people with insomnia, since hot rooms are linked to more wake ups. See insomnia treatment for full options.
Menopause and Perimenopause
Hot flashes and night sweats are a top reason women drop out of deep sleep. The best temperature for sleep during menopause is on the lower end of the adult range, often 60 to 65 degrees Fahrenheit. Pair this with moisture wicking bedding. See menopause sleep problems natural remedies, hormonal insomnia, and perimenopause heart palpitations.
Older Adults
Older adults often need slightly warmer rooms, around 65 to 70 degrees Fahrenheit. The body holds heat less well with age. Watch for cold feet and chilled hands.
When Temperature Is Not the Real Issue
A cool bedroom is a strong tool, but it cannot fix every sleep problem. If you have done the basics and still sleep poorly, the issue may be deeper.
Watch for these signs of a true sleep disorder:
- Loud snoring or gasping at night
- Choking sounds during sleep
- Morning headaches that come and go
- Heart racing at night
- Long stretches of being awake in bed
- Heavy daytime tiredness no matter what
See signs of sleep apnea, sleep apnea symptoms, and why do I wake up with my heart racing.
If any of these fit, a home sleep apnea test can give you a real answer in one night, without a hospital visit.
Watch: Sleep Apnea, Explained.
How SLIIIP.com Supports Better Sleep
SLIIIP.com is a sleep telehealth platform built for people who want clear answers without long waits. Our team offers:
- Virtual consultations in all 50 states
- Home sleep tests shipped to your door
- Nationwide coverage with board certified sleep physicians
- Insurance verification for many major plans
- Digital tools for chronic insomnia
If basic fixes like room temperature and bedtime habits have not worked, our sleep telemedicine service can move you to the next step from home. Learn more in how it works.
According to the National Heart, Lung, and Blood Institute, poor sleep is linked to higher risk for heart disease, diabetes, and depression. Small changes like room temperature pair well with bigger plans like a sleep evaluation.
At Sliiip, we accept the following insurances:
SLIIIP’s board-certified sleep physicians can do sleep evaluations for sleep apnea. Virtual consultations in all 50 states. Home sleep tests shipped to your door.
Frequently Asked Questions
What is the best temperature for sleep?
For most adults, 60 to 67 degrees Fahrenheit, or 15 to 19 degrees Celsius.
Why is a cool room better for sleep?
Your core body temperature drops at night. A cool room helps that drop happen.
Is 72 degrees too warm to sleep?
For many adults, yes. Most people sleep better below 68 degrees.
What temperature is best for babies?
About 68 to 72 degrees Fahrenheit, with light bedding and a sleep sack.
Should I sleep with socks on?
If your feet are cold, yes. Warming the feet helps heat leave the body faster.
Why do I sweat at night even with the air on?
This can be a sign of menopause, anxiety, sleep apnea, or other issues. See menopause sleep problems or signs of sleep apnea.
Is a fan or air conditioner better?
Either works. Fans add helpful white noise. Air conditioners cool more reliably in hot climates.
Can a hot room cause insomnia?
Yes. Heat blocks the body’s natural cooling pattern needed for sleep.
What is the best bedroom temperature for menopause?
Many women sleep best between 60 and 65 degrees Fahrenheit during this stage.
Should older adults keep the room cooler too?
Slightly warmer, around 65 to 70 degrees, often fits older adults better.
Does a warm shower before bed help sleep?
Yes, about 90 minutes before bed. The cool down after the shower helps trigger sleep.
Are weighted blankets too warm?
They run warm. Choose breathable covers and lower weights in summer.
What about humidity?
Aim for 40 to 60 percent. Dry air can irritate breathing. Too much moisture feels heavy.
Can a cool room help with snoring?
A bit. But loud snoring needs a sleep evaluation. See signs of sleep apnea.
Is cold air good for the lungs at night?
Cool air is fine for most people. Very cold or very dry air can bother people with asthma.
Does the right temperature help with anxiety at night?
A calm, cool room is a small piece of the picture. Pair with breathing tools.
Why am I cold all night?
This can be circulation, anemia, or low thyroid. Talk to a doctor if it is new.
Does sleep position matter for temperature?
Yes. Side and back sleepers tend to run cooler than stomach sleepers. See best sleeping position.
How does diet affect sleep temperature?
Late meals, alcohol, and spicy food raise body heat at night.
When should I see a sleep doctor?
If you fix the basics and still sleep poorly, book a virtual visit with SLIIIP.com.
Cool the Room, Then Build the Plan
The best temperature for sleep is the easiest sleep tool to use, and one of the most powerful. If a cooler room and better bedding do not solve your nights, Dr. Avinesh Bhar and the SLIIIP.com team can run a full evaluation from home and build a plan that fits your life.
SLIIIP’s board-certified sleep physicians can do sleep evaluations for sleep apnea. Virtual consultations in all 50 states. Home sleep tests shipped to your door.
