What should baby wear to sleep? (2024)

Picture this – it’s mid-summer and you start sweating the moment you step outside; it feels too hot to put on any clothes. Or, what if it’s the dark days of winter when you’re freezing and even with your warmest flannels on?

What on earth should your baby wear to sleep at times like these? After all, they can’t verbalize if they’re hot or cold.

What your baby wears to bed is important from a safety perspective. Too many layers and baby could overheat; too few, and they could catch a chill. There are other dangers involved as well.

For instance, you may try to keep your newborn warm by covering them with a blanket, but that may affect their breathing and puts them at risk of Sudden Infant Death Syndrome (SIDS).

It’s no wonder why clothing is such a worry for parents. If you’re confused about how to dress baby for sleep, you’re in the right place.

Read on for expert-backed information on how to dress your baby for different weather conditions.

Things to keep in mind before dressing your baby for sleep

Experts recommend dressing babies in one or more thin layers of clothing so that they do not overheat.

Another rule of thumb recommended by The Sleep Foundation and The American Academy of Pediatrics (AAP) is to dress your baby in one additional layer than an adult would need to feel comfortable in the same room. This way, you’ll avoid over-bundling and overheating.

For example, if you’re dressed in pajamas, you might consider dressing baby in a diaper and onesie, plus an additional layer for your baby – like a set of pajama or a swaddle.

You can use the room temperature to gauge how many layers you should dress baby in. The Sleep Foundation recommends 69°F as the ideal sleeping temperature for developing infants, as their bodies are more sensitive to changes in temperature.

Remember, infants should not be put to bed with a blanket or lovey as they increase the risk of SIDS by restricting breathing and airflow.

1. How do you know if baby is too hot or too cold?

Like adults, babies’ temperature tends to fluctuate based on external factors like time of day and physical activity.

So, what’s the normal body temperature for babies? It’s a little tricky to determine because their bodies are still developing and can’t regulate temperature as well as adults. In fact, babies lose heat 4 times faster than grown-ups.

Baby’s temperature could range between 95.8 – 99.9°F from morning to night. Since your baby can’t tell you if they’re feeling hot or cold, you’ll need to look out for physical indicators of discomfort.

Signs that your little one is too hot could include:

  1. Sweating
  2. Damp hair
  3. Red cheeks
  4. Red, rashy skin
  5. A hot chest
  6. Quick breathing

Signs that your baby is cold include:

  1. Shivering
  2. A cool chest

Worried that baby is too cold? Check for these signs of hypothermia:

  1. Pale, cool skin
  2. Difficulty breathing
  3. A weak cry
  4. Sluggishness
  5. Poor feeding

If you suspect hypothermia, seek medical attention immediately. While hypothermia is comparatively less likely to occur than overheating, it’s always better to be cautious and consult your pediatrician.

For premature babies, experts recommend 2 additional layers (rather than 1) until they reach a normal weight, as preemies lack the body fat to keep themselves warm.

2. Should you swaddle your baby?

According to The Sleep Foundation, swaddling can be an option for newborns; it can calm them and help them sleep better. However, there is no evidence that swaddling is safer than dressing them in layers.

Once your baby starts rolling over on their own (around the 2 – 3 month mark), it’s recommended that you stop swaddling them. A swaddled baby who can roll over might wind up face down and unable to turn onto their back again.

Also, if you wrap baby too tightly, they could overheat or have difficulty breathing. It’s best to consider the risks before swaddling your little one. Read about how to swaddle your baby properly here.

3. What should your baby wear to sleep when it’s hot?

Courtney Zentz, Founder of Tiny Transitions Sleep Consulting, says, “In hot weather, dress your baby in lightweight, breathable clothing made of natural fibers such as cotton. Opt for loose-fitting garments that allow air circulation.” Lightweight, breathable clothing will prevent overheating.

On hot nights, consider a short-sleeved, cotton bodysuit with a muslin or organic cotton swaddle. However, if your home is air-conditioned, a long-sleeved onesie with footies is a better choice.

The AAP recommends switching to a single layer of clothing in temperatures over 75°F.

4. What should your baby wear when it’s cold?

For colder weather, Zentz recommends, “Start with a thin, breathable layer as a base, such as a cotton onesie. Consider using a sleep sack or wearable blanket for added warmth during sleep.”

When choosing warm fabrics to layer over cotton jammies, think fleece pajamas or a microfleece sleep sack or swaddle.

FAQs

Q: Can babies sleep with hats on?

A:Babies release excess heat through their heads to regulate their temperature. Therefore, when it comes to hats and sleeping, experts recommend steering clear of hats to prevent overheating. Also, anything loose fitting, like a hat, could slip off and interfere with baby’s breathing.

Q: How should baby sleep clothes fit?

A: The Sleep Foundation recommends baby sleepwear that is stretchy and loose, so it goes on easily, but not so loose that it rides up to cover baby’s face or neck. Favor natural materials that are well-fitted and in good condition.

Q: Can baby’s feet be covered at night?

A: When it comes to baby temperature, overheating is a bigger worry than being too cold. If your feet are cold in the nursery, then perhaps socks are a good option (not in summer though). However, if the room is relatively warm and your baby is dressed in enough layers, it’s better to skip the socks.

Sources:

  1. Baby sleepwear: What to know. 2020. Healthline. How to Dress Baby for Sleep.
  2. How to keep your baby comfortable. 2022. What to expect. How to Dress a Newborn Baby for the Weather.
  3. Ways to dress baby for sleep. 2023. The Sleep Foundation. How to Dress a Baby for Sleep.
  4. How to dress your baby for sleep. American Academy of Pediatrics. Tips for Dressing Your Baby Step-by-Step.
  5. Keeping kids warm outdoors in winter. American Academy of Pediatrics. Playing Outside in Winter: Tips to Keep Kids Warm & Safe.
  6. Should infants wear sunscreen? 2021. U.S. Food & Drug Administration. Should You Put Sunscreen on Infants? Not Usually.
  7. What should kids wear to sleep? 2022. The Sleep Foundation. How To Dress Your Child for Sleep.
  8. Sleepwear for children. 2022. Sleep Doctor. What Should Babies Wear to Sleep?
  9. Low body temperature in babies. 2023. Healthline. Identifying and Treating a Low Body Temperature in Babies.

What should baby wear to sleep? (2024)

FAQs

What is proper sleep attire for baby? ›

Dress in Layers: Start with a onesie as a comfortable base layer and add additional long sleeves and/or footies as needed. A good rule of thumb is to dress them in one more layer than you would need to feel comfortable.

What should a baby wear to sleep at 70 degrees? ›

Choose 1.0 TOG: A 1.0 TOG sleep bag is Ideal for the 70-degree range. It's like a lightweight sweater for your baby's sleep—a perfect balance of warmth. Layer Like a Pro: Combine a lightweight PJ or onesie with a 1.0 TOG sleep sack for the perfect sleep ensemble.

Can a baby sleep in just an onesie? ›

In many cases, a onesie can be an effective primary layer of sleepwear. As a general rule, parents and caregivers should dress a baby with only one more layer than an adult would need to stay warm in that same bedroom. This rule can help avoid over-bundling, which can lead to safety risks from overheating.

How many layers should a baby wear at night? ›

A good rule of thumb is to give your baby 1 extra layer of clothing than what you're wearing. For example, if you're in a t-shirt and jumper, dress them in a vest, sleepsuit and cardigan or jumper. If you feel chilly, your baby probably does too.

How to tell if baby is cold at night? ›

If your baby is too cold at night, the core of their body (chest, neck, back, and tummy) would feel cool to the touch. It's important to know that your baby's fingers and toes are not a good indicator of warmth. Your baby could be dressed perfectly yet still have cooler fingers or toes.

Is 71 too hot for a baby room? ›

The Best Room Temperature for Babies

You don't want your baby's room to be either too hot or too cold. It's recommended that the best temperature for babies is between 68 to 72 degrees Fahrenheit or 20 to 22 degrees Celsius.

Will my baby overheat in a sleep sack? ›

Make sure the sleep sack is the right size for your baby. If it's too big, your baby can slip down inside the sack, which can make your baby overheat or suffocate. If it's too small, your baby may not be able to move their hips and legs freely, which can be dangerous, especially if they roll onto their tummy.

Can a baby overheat in a swaddle? ›

Swaddling can increase the chance your baby will overheat, so avoid letting your baby get too hot. The baby could be too hot if you notice sweating, damp hair, flushed cheeks, heat rash and rapid breathing. Consider using a pacifier for naps and bedtime.

Do babies sleep better in footie pajamas? ›

The enclosed, snug feel of footie pajamas can provide a sense of security that soothes your baby, potentially aiding in better sleep. For new parents navigating the often bewildering world of baby sleep patterns, this is a godsend.

Should babies sleep in total darkness? ›

As you can see, there are many reasons why your baby should sleep in complete darkness. They lack the ability to produce melatonin and their body is more sensitive to light than an adult's would be. The best way for them to get enough restful sleep is by sleeping with no lights on at all.

What temperature can a baby sleep in just a diaper? ›

A baby wearing a diaper, and t-shirt will only need a sheet as bedding if the temperature in his room is 24 degrees C / 75.2 degrees F. If he is still hot, he could sleep in just his diaper.

What is the best temperature for a baby to sleep? ›

Key Takeaways for better baby sleep

One of the key ways to help your baby sleep better and longer is by maintaining a temperature of 68-72°F. Multiple studies, and our own experiences, show this is the ideal temperature for nurturing your baby's sleep. It's not too hot and not too cold – the Goldilocks number.

What should a baby wear to sleep at 68 degrees? ›

69 to 74 degrees Fahrenheit: Use a swaddle that's less than or equal to 2.0 TOG and dress your baby in long- or short-sleeve cotton pajamas. 50 to 68 degrees Fahrenheit: Use a swaddle with a 2.0 to 3.5 TOG and dress your baby in long-sleeve cotton PJs with or without a cotton bodysuit.

How to dress baby for sleep without a sleep sack? ›

Here's a guideline for how to dress baby for cool but comfortable sleep: If it's chilly, layer a onesie under your child's footie pajamas. If it's very cold, add a layer of a blanket sleeper (a fleece zipper pajama that goes over the thin cotton pajama). If it's warm, opt for just a one-piece breathable cotton pajama.

What temperature should baby sleep wear be? ›

Approximately 10 togs of clothing are recommended for 0-1 month old babies at a room temperature of 65- 70F/18-20C. The following data can be used as a guide to tog rating in baby clothing and bedding: Swaddling can increase the tog rating by up to 4 times. Likewise, a blanket folded in half doubles the tog rating.

What is a good sleeping style for baby? ›

Health care providers should encourage parents to do the following to reduce the risk of SIDS: Always place your baby on his or her back to sleep—for naps and at night. The back sleep position is the safest, and every sleep time counts.

What should baby wear under sleeper? ›

A swaddle, sleep bag, and sleep suit count as one layer. You can then layer a lightweight romper, bodysuit, or PJs underneath depending on the temperature and season. When choosing sleepwear, consider the TOG rating to ensure it is suitable. The higher the TOG, the warmer it is.

What should a baby wear to sleep under a swaddle? ›

This is when a baby might be most comfortable in just one extra layer, such as a short-sleeved bodysuit or vest, underneath their swaddle. For colder nights, parents can wrap their baby in a sleepsuit, or a bodysuit underneath a sleepsuit, depending on how chilly it is and the child's reaction.

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