The ideal sleeping temperature sits in a narrow range where the body can relax without effort.
This guide explores what that range looks like across ages and life stages, and how to gently adjust your bedroom so rest feels natural, not forced.
Gentle note: Olive + Crate isn’t a medical organization. This article shares general, research-based information reviewed against trusted health sources.
What Is the Ideal Sleeping Temperature?
Most sleep researchers agree on a narrow range for the optimal sleeping temperature:
60–67°F (15–19°C) for adults
This range allows the body’s core temperature to dip naturally overnight, a biological rhythm tied to deeper sleep cycles.
According to the Sleep Foundation, this window supports the body’s natural nighttime cooling process, which is essential for falling and staying asleep:
Still, temperature isn’t universal. Age, metabolism, hormones, humidity, and bedding materials quietly shape what feels right.
What Is Ambient Temperature and Why It Matters at Night
Ambient temperature refers to how the air in a room actually feels, not just what the thermostat reads. Airflow, humidity, insulation, and materials all influence this experience.
What is considered room temperature during the day, usually 68–72°F, can feel too warm once the body begins its nighttime cooling process.
Sleep quality improves when the surrounding environment allows the body to lower its core temperature naturally.
Is It Better to Sleep Cold or Hot?
Most bodies rest best in cool air paired with gentle warmth.
A slightly cooler room helps the body release heat and move into deeper sleep cycles, while breathable layers add comfort without holding warmth close to the skin.
What tends to disrupt sleep is imbalance:
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Rooms that are too warm often lead to restlessness and night sweats
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Rooms that are too cold can cause tension and lighter, fragmented sleep
If you’re someone who runs warm at night, learning how to stay cool without overcorrecting the room can make a noticeable difference.
Best Sleeping Temperature by Season
The ideal sleeping temperature stays relatively consistent year-round. What changes is how the room absorbs and releases heat.
Summer
In warmer months, many people sleep most comfortably between 60–64°F (15–18°C).
Heat and humidity make it harder for the body to cool itself. A slightly lower room temperature helps offset this, especially when paired with airflow and breathable bedding.
Research highlighted in Psychology Today reveals that elevated nighttime temperatures can interfere with the brain’s ability to enter deeper sleep stages, particularly during periods of high humidity.
In homes without air conditioning, comfort often comes from allowing heat to escape rather than forcing the room colder. What tends to help most:
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Steady air movement
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Lower humidity
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Lightweight, breathable fabrics
This is especially noticeable for people who wake warm during the night.
Fall
Fall is often the easiest season for sleep.
Outdoor temperatures cool, humidity drops, and the body adjusts with little effort. Bedrooms between 62–66°F (17–19°C) usually feel balanced without frequent changes.
Seasonal transitions benefit from layering rather than thermostat adjustments.
Johns Hopkins Medicine notes that gradual temperature changes support circadian rhythm stability.
Winter
In winter, consistency matters more than keeping the room cold.
Most people sleep well between 65–67°F (18–19°C).
Temperatures below this range can lead to unnecessary waking, particularly for children and older adults.
Comfort often comes from layering instead of raising the thermostat:
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Warm but breathable textiles
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Consistent room temperature
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Avoiding heavy, heat-trapping materials
This approach works well in shared households where comfort needs vary.
Ideal Sleeping Temperature by Age and Life Stage
Newborns and Babies
Newborns are still learning how to regulate body temperature. Until that system matures, the room environment does most of the work.
The AAP safe sleep guidelines recommend keeping the room between 68–72°F (20–22°C) for newborns and babies.
Signs a baby may be too hot while sleeping include:
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Flushed skin
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Damp hair or neck
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Faster or labored breathing
Babies can sweat, but their cooling systems are still developing. Because of this, overheating is a known risk factor in unsafe sleep environments.
Cool hands or feet are common and not always a concern. Checking the chest or back gives a more accurate sense of overall warmth.
Infants and Toddlers
As babies grow, their ability to regulate temperature improves, usually between 12 and 18 months.
The ideal sleeping temperature for infants and toddlers remains 68–72°F (20–22°C).
At this stage, comfort depends less on blankets and more on:
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Appropriate sleepwear
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Consistent airflow
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A stable room environment
Many caregivers instinctively check the chest rather than hands or feet. That small habit reflects how subtle temperature cues can be.
Kids and Teens
Children and teens often sleep best in slightly cooler rooms, typically 65–70°F (18–21°C).
According to guidance from SleepEducation.org, temperature sensitivity can increase during adolescence as circadian rhythms shift and emotional regulation becomes more closely tied to sleep quality.
Growth spurts, hormonal changes, and higher metabolism can all contribute to increased nighttime warmth.
Some families find that cooler rooms paired with calming evening routines help the body recognize when it’s time to rest.
Adults
For most adults, the ideal sleeping temperature falls between 60–67°F (15–19°C).
A recent peer-reviewed study found that environmental temperature plays a measurable role in sleep continuity and thermal comfort, particularly when combined with daily stress and physical activity levels.
In practice, this means comfort can shift from day to day.
Adults who wake warm or experience night sweats often benefit from focusing on:
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Airflow
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Humidity control
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Fabric and bedding choices
These factors often matter more than lowering the thermostat alone.
Women and Men
Hormonal changes can shift how temperature feels over time.
The Sleep Foundation notes that night sweats and temperature sensitivity are more common for women during pregnancy, postpartum stages, and menopause. During these periods, many women prefer slightly cooler rooms to feel comfortable through the night.
Men often feel comfortable within the standard adult range but may experience warmth differently due to muscle mass and metabolism.
In both cases, airflow and breathable materials play a quiet but important role.
Seniors
As circulation and temperature regulation change with age, seniors often feel most comfortable in rooms between 65–70°F (18–21°C).
The CDC highlights that adults over 65 are more sensitive to temperature extremes and may not adapt as easily to heat or cold. For this reason, stability matters more than dramatic temperature changes.
Rather than raising the thermostat significantly, layering tends to work better:
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Soft, breathable textiles
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Light warmth without heaviness
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A steady, predictable room temperature
This creates comfort that feels calm and supportive rather than enclosed.
Simple Ways to Adjust Your Bedroom at Night
Temperature isn’t controlled by the thermostat alone. Often, the most noticeable changes come from small shifts in how the room moves and feels.
A few gentle adjustments can help the space settle:
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Opening a window just enough to let fresh air circulate
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Choosing breathable fabrics that allow heat to release
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Lowering the AC by a single degree rather than making a big change
Materials play a role here. Heavier layers tend to hold warmth in place, while lighter textiles keep the room feeling open.
Small habits can also signal that the day is ending. Some people find that a brief cool rinse before bed makes warmer nights easier to manage, especially during summer.
Others notice a difference when sleepwear feels less restrictive and more breathable, allowing the body to cool naturally as the room settles.
A Bedroom That Listens Back
The best bedrooms don’t ask much of the body. They create conditions where rest can happen on its own.
Temperature plays a quiet role in that. Like light or sound, it shapes how settled a space feels once the day ends.
When the room stays steady, the body doesn’t need to adjust or react. It simply eases into the night.
Sources & Medical References
This article was informed by clinician-reviewed health resources, pediatric guidance, and peer-reviewed research, including:
Sleep Foundation. Best Bedroom Temperature for Sleep.
https://www.sleepfoundation.org/bedroom-environment/best-temperature-for-sleep
The Washington Post. You’re Probably Setting Your Thermostat to the Wrong Temperature.
https://www.washingtonpost.com/home/2022/11/22/thermostat-wrong-temperature/
Cleveland Clinic. What Is the Ideal Sleeping Temperature for My Bedroom?
https://health.clevelandclinic.org/what-is-the-ideal-sleeping-temperature-for-my-bedroom
Psychology Today. The Key Role of Temperature in Sleep Quality.
https://www.psychologytoday.com/us/blog/the-modern-brain/202503/the-key-role-of-temperature-in-sleep-quality
Johns Hopkins Medicine. The Science of Sleep: Understanding What Happens When You Sleep.
https://www.hopkinsmedicine.org/health/wellness-and-prevention/the-science-of-sleep-understanding-what-happens-when-you-sleep
American Academy of Pediatrics. Safe Sleep.
https://www.aap.org/en/patient-care/safe-sleep/
Sleep Education (American Academy of Sleep Medicine). Sleep, Mood, and Teens.
https://sleepeducation.org/sleep-feel-well-sleep-mood-teens/
Zhang Y et al. Environmental Temperature and Sleep Quality.
Heliyon, CellPress.
https://www.sciencedirect.com/science/article/pii/S2405844024018322
Sleep Foundation. Night Sweats in Women.
https://www.sleepfoundation.org/night-sweats/women
Centers for Disease Control and Prevention. Heat and Older Adults (Age 65+).
https://www.cdc.gov/heat-health/risk-factors/heat-and-older-adults-aged-65.html
