The Optimal Bedroom Temperature for Every Age (And Other Gentle Ways to Support Restful Sleep)

Sleep is one of the most powerful healing tools we have. It supports immune function, hormone balance, cognitive development, detoxification, emotional resilience, and metabolic health. Bedroom temperature affects sleep quality. 

In this article, we’ll take a look at the ideal bedroom temperature by age, why temperature plays such an important role in sleep physiology, special considerations for babies and children, and supportive ways to encourage deeper healthier rest.

The body follows a natural circadian rhythm. In the evening, melatonin rises and core body temperature begins to drop. This is a biological signal that helps initiate sleep (1).

If the bedroom is too warm, it interferes with this natural cooling process. Research shows that cooler sleep environments are associated with faster sleep onset, more time in deep (slow-wave) sleep, fewer nighttime awakenings, and better overall sleep quality (2).

An environment that is too cold, however, may increase stress hormones and muscle tension, making it harder to fully relax; so, it’s important to pay attention to your body's cues and adjust accordingly.

While there is some variation between individuals, these ranges are generally supported by sleep research and pediatric safety recommendations.

Recommended range: 65-70°F (18-21°C)

Many sleep experts suggest a cooler bedroom environment, often around 65-70°F (18-21°C), though it’s important to note that there is no official bedroom temperature guideline issued by U.S. health authorities.

Many families unknowingly keep children’s bedrooms too warm. Overheating may contribute to night sweating, restless movement, frequent wakings, and in some cases, night terrors. Cooler air supports deeper sleep cycles and improved growth hormone release, which is especially important during periods of rapid growth. 

Some toddlers and young children struggle to keep themselves well covered with their blankets. In my home, we use footed sleep sacks until we outgrow the biggest size, usually around age 4-5. This is a great way to make sure your child stays covered and comfortable during cooler nights! 

Natural fibers are generally best for sleepwear and bedding. If your child expresses being cold at night, and they are already wearing suitable pajamas and have a suitable blanket or sleep sack, consider raising the room temperature a degree or two. 

To learn more about sleep during childhood, read this article: Sleep Essentials For Kids

Recommended range: 60-67°F (15-19°C)

Adolescent circadian rhythms naturally shift later, making teens more prone to delayed sleep onset. A cooler bedroom can support melatonin signaling (4) and may help consolidate sleep once it begins.

Reducing evening light exposure, especially from screens, becomes particularly important during these years. Temperature adjustments often work best when combined with consistent sleep timing and reduced stimulation before bed.

You might like this article: 9 Reasons Your Kids Aren’t Sleeping (And How To Help)

Recommended range: 60-67°F (15-19°C)

Research consistently shows adults sleep best in cooler rooms (5). Warmer environments may disrupt REM sleep, increase heart rate, and impair restorative rest.

For couples with different temperature preferences, adjusting bedding rather than the thermostat can help. Separate duvets, natural breathable fibers such as cotton or linen, and layered bedding provide flexibility without compromising sleep quality.

To learn more about sleep disturbances, read this article: Understanding Insomnia: Sleep Onset vs. Sleep Maintenance

Recommended range: 65-72°F (18-22°C)

Older adults may feel colder due to changes in circulation and metabolism (6). However, overheating can still disrupt sleep architecture.

Layering clothing and bedding is generally preferable to significantly raising room temperature. Maintaining a slightly cool but comfortable environment supports deeper sleep while accommodating increased sensitivity to cold.

Frequent waking, sweating at night, damp hair in children, flushed cheeks in infants, restless tossing, and morning grogginess may all suggest the sleep environment is too warm. A small bedside thermometer can be surprisingly helpful in maintaining consistency.

Sleeping with a fan on can be a simple and effective way to maintain a comfortable sleep environment, especially in warmer climates or during seasonal transitions.

A fan works by increasing air circulation, which supports the body’s natural cooling process and helps prevent pockets of stagnant, warm air, but it does not reduce the actual temperature of the room. 

The AAP recommends a fan in the infant's bedroom, but it is important to know that a fan should never be pointed directly at an infant. Airflow should be indirect and gentle. 

For children and adults who are prone to allergies or sinus congestion, fans may stir up dust if filters and blades are not cleaned regularly. Routine cleaning helps minimize this.

White noise is an added benefit. The steady sound of a fan can support nervous system relaxation and reduce environmental disruptions that might otherwise cause waking.

Beyond maintaining room temperature, sleep can be supported through the following tips and tricks:

Dimming lights 60-90 minutes before bed helps signal melatonin production (7). Warm-toned lamps are preferable to bright overhead lighting. Consistency in evening light exposure is one of the most powerful regulators of circadian rhythm.

Night wakings in both children and adults are sometimes related to blood sugar fluctuations. A balanced dinner that includes adequate protein and healthy fats can help stabilize glucose levels overnight. In some cases, a small protein-based snack before bed may be supportive.

To learn more about blood sugar regulation, read this article: Tips for Blood Sugar Balance Plus Dr. Green Mom’s Ginger & Apple Cider Vinegar Mocktail Recipe

When foundational sleep habits are in place, gentle herbal support can help calm the nervous system and ease the transition into rest.

For adults and teens, Help Me Sleep™ combines traditional botanicals with 3 mg melatonin to support sleep onset and deeper rest. It features valerian root, hops, skullcap, passionflower, chamomile, and California poppy - herbs traditionally used to quiet mental chatter and promote relaxation.

For children, Please Sleep!™ Kids offers a melatonin-free option with organic lemon balm, passionflower, chamomile, catnip, and California poppy to gently support calm and comfort at bedtime.

The nervous system thrives on predictability. A simple sequence - such as a warm bath or shower, dim lights, quiet reading, and a cool, dark bedroom - helps condition the brain to associate those cues with sleep onset.

Sleep is best supported in a slightly cool, comfortable room that allows the body’s natural nighttime temperature drop to occur. While exact ranges vary by age, most people sleep better when the environment is not too warm and layers are adjusted as needed. Pairing an appropriate room temperature with consistent routines, low evening light, stable blood sugar, and gentle nervous system support can significantly improve sleep quality at every stage of life.

1. Harding EC, Franks NP, Wisden W. The Temperature Dependence of Sleep. Front Neurosci. 2019 Apr 24;13:336. doi: 10.3389/fnins.2019.00336. PMID: 31105512; PMCID: PMC6491889.

2. Okamoto-Mizuno K, Mizuno K. Effects of thermal environment on sleep and circadian rhythm. J Physiol Anthropol. 2012 May 31;31(1):14. doi: 10.1186/1880-6805-31-14. PMID: 22738673; PMCID: PMC3427038.

3. Moon RY, Carlin RF, Hand I. (2022). Sleep-Related Infant Deaths: Updated 2022 Recommendations for Reducing Infant Deaths in the Sleep Environment. Pediatrics, 150(1). https://doi.org/10.1542/peds.2022-057990

4. Xu X, Liu X, Ma S, Xu Y, Xu Y, Guo X, Li D. Association of Melatonin Production with Seasonal Changes, Low Temperature, and Immuno-Responses in Hamsters. Molecules. 2018 Mar 20;23(3):703. doi: 10.3390/molecules23030703. PMID: 29558391; PMCID: PMC6017911.

5. Griffith University. (2026, February 11). This bedroom temperature could help older adults sleep with less stress. ScienceDaily. Retrieved from www.sciencedaily.com/releases/2026/02/260210040625.htm 

6. Sun, S., & Cheng, W. (2025). Physical and physiological differences in thermal comfort and regulation among older adults: A systematic review. Building and Environment, 284, 113424. https://doi.org/10.1016/j.buildenv.2025.113424

7. Hanifin JP, Dauchy RT, Blask DE, Hill SM, Brainard GC. Relevance of Electrical Light on Circadian, Neuroendocrine, and Neurobehavioral Regulation in Laboratory Animal Facilities. ILAR J. 2020 Oct 19;60(2):150-158. doi: 10.1093/ilar/ilaa010. PMID: 33094817; PMCID: PMC7947598.kids