What’s the Best Room Temperature for a Sleeping Baby?

Making sure your baby sleeps at the right temperature isn’t just about comfort—it’s about safety and better sleep for everyone. Experts suggest keeping the nursery’s temperature just right—not too warm, not too chilly—around 68–72°F (20–22°C). This simple habit can help prevent overheating (a risk factor for SIDS) and help your baby’s body regulate heat for deeper, more restful sleep.

Getting the right room temperature is a key step towards a safer, cozier sleep space for your little one. Keep reading for tips on regulating temperature, choosing sleepwear, and spotting when your baby may be too hot or cold.

Ideal Sleeping Temperature for Your Baby’s Room

Did you know the temperature in your baby’s room can make a big difference in how well they sleep? But what’s the “just right” temperature? Rule of thumb: aim for the temperature you’d be comfy in with a light layer. Keeping the nursery at this optimal temperature gives your baby the cozy, safe sleep they need.

Experts, such as the American Academy of Pediatrics (AAP), say you should set your baby’s room between 68 and 72°F (about 20 and 22°C) for the safest, soundest sleep. Think about what would feel comfortable to a lightly dressed adult in the space—that’s your north star.

Remember, temperature is only part of good sleep! The Smart Sleep Coach app by Pampers, developed with sleep specialists, can help your family catch those precious ZZZs.

Why Setting the Ideal Temperature Is Important for Your Baby

If the nursery is too warm or a little too cold, your baby might not sleep as long or as well. Keeping things in the recommended range not only boosts their rest, but also supports growing bodies and brains.

Here’s how room temperature can make an impact:

• Risk of overheating. The AAP and CDC caution that overheating increases the risk of SIDS (Sudden Infant Death Syndrome). Follow their advice: skip the extra layers, don’t cover your baby’s head, and stick to that temperature range.

• Chilly rooms aren’t safer. Rooms that are too cool mean your baby must use up extra energy to stay warm, which could disrupt their sleep and affect how well they sustain body heat on their own.

• Comfort makes a difference. Too warm can mean sweaty, fussy, and restless. Too cold? Your baby might be extra fussy or wake more often. Balance is key.

• Temperature regulation skills. Newborns aren’t as good at adjusting their body temperature as adults are. Their little bodies need a stable environment so they’re not working overtime just to stay comfortable.

How to Keep the Right Room Temperature for Your Baby

Not sure how to keep the nursery cozy, safe, and just-right? Try these tips:

Signs Your Baby Is Too Hot While Sleeping

Wondering if your baby is too warm at night or in their swaddle? Look for these clues:

• Sweaty or clammy skin—especially on the head or neck

• Red or flushed cheeks, or heat rash

• Quick, shallow breathing

• Fussier, wakes more often

• Hot chest when you touch it

• Damp hair at the neckline

• Unsettled or irritable behaviour

The AAP advises always checking for signs like sweating or an overheated chest—these often mean it’s time to cool down the room or lighten up the layers. If your baby is hot, feverish, or overheated even when the room feels right to you, reach out to your healthcare provider for advice.

Signs Your Baby Is Too Cold at Night

Here’s how to tell if your baby’s a bit chilly while sleeping:

• Cool skin on the chest or back of neck

• Lethargic, extra fussy, or waking more from discomfort

• Pale skin or blueish tint (especially lips or extremities—pay most attention to body core)

• Shivering (newborns might not always shiver when cold)

• Hands and feet are cold—though these aren’t always reliable signs.

If you see these signs, add an extra layer on your baby, choose warmer sleepwear, or gently raise the room temperature—but don’t make it too hot.

How to Dress Your Baby for Sleep

Trying to figure out what to dress your little one in for bedtime? You’re not alone—especially with unpredictable Canadian weather. If you’re asking “What should newborns sleep in?”, the answer always comes back to safe, season-appropriate layers that help your baby stay comfy and protected, all year round.

Should a Newborn Wear a Hat to Sleep?

Generally, don’t put hats on your baby at home for sleep. The AAP recommends keeping your baby’s head free and clear during sleep—babies release excess body heat through their heads, and hats could increase the risk of overheating. Hats are only needed in hospital settings or outside when it’s very cold (and only for warmth), but not in the nursery.

How Many Layers Should a Newborn Sleep in?

• A handy rule: dress your baby in one extra layer than you’d wear yourself to bed. If you’re comfortable in a t-shirt and pajama pants, dress your baby in a onesie and a sleep sack or footed sleeper.

• Choose a sleep sack or wearable blanket instead of loose blankets for safe baby sleep layers. It's recommended to avoid using loose blankets for babies under 1 year of age.

• Go with lighter, breathable fabrics in the summer and slightly warmer fabrics in winter—without piling on too many layers.

Baby Sleep Temperature Chart

Picking the right sleep sack or pyjamas may depend on the “TOG” rating—the higher the TOG, the warmer the fabric. Here’s a guide to help you decide which sleepwear is best for the season and your baby’s room temperature:

Note: While official guidelines don’t always specify TOG values, using “one extra layer” and avoiding hats or loose covers for sleep is recommended.

6 Steps to Keep Your Baby Comfortable During Sleep

Besides keeping the nursery at a good temperature, try these six practical steps for safe, cozy infant sleep:

Want extra tips on safe sleep? Check out this handy safe sleep guide.

The Bottom Line

Helping your baby sleep well is one of the kindest gifts you can give—both to them, and to yourself! Keep your baby’s room at the ideal temperature, and you’re on the right track for safe, peaceful sleep.

More rest for your little one can mean more sleep for you, too—setting up the perfect sleep environment is a win-win for everyone. Discover additional tips and expert advice on caring for your newborn to guide you through these precious first months.

Don’t forget to download the Pampers Club app and earn Pampers Cash whenever you buy our diapers or wipes.

_{How We Wrote This Article The information in this article is based on expert advice found in trusted medical and government sources, such as the American Academy of Pediatrics and the American College of Obstetricians and Gynecologists. You can find a full list of sources used for this article below. The content on this page should not replace professional medical advice. Always consult medical professionals for full diagnosis and treatment.}