What Is The Best Temperature For Your Baby’s Room?

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When creating the ideal conditions for your baby's room, nothing seems more important than the room temperature. Armed with thermometers, parents aim to balance the scales favourably despite factors we can't always control, namely the weather. So, what exactly is the best baby room temperature? Below, we'll explore the ideal temperature range for a baby's room, how to tell if your baby is becoming too hot or too cold during sleep, and what you can do to help your little one sleep safely and comfortably overnight.
reviewed by Genevieve Titov, Sleep Angel
5 min read |
30 August, 2024

What is the ideal room temperature for babies? 

The Lullaby Trust recommends keeping your baby's room between 16-20°C, with 18°C being the sweet spot. Using a room thermometer near your baby's sleep space is the easiest way to keep an eye on it.

But temperature is only part of the picture. What your baby is wearing and the bedding they're using matters just as much, because safe sleep is about the whole setup working together.

Why does this matter so much?

Overheating has been linked to an increased risk of SIDS (Sudden Infant Death Syndrome). It can happen when a room is too warm, baby is wearing too many layers, or both. Research has actually shown that babies are safer when they're a little bit cooler rather than too hot.

To help keep things balanced: dress baby in layers you can easily adjust, keep the room well ventilated, and skip hats or beanies indoors. Babies regulate their temperature through their head and face, so keeping those uncovered is really important. If you're unsure whether your baby is too hot or too cold, check the back of their neck or their tummy rather than their hands or feet (which often feel cool even when baby is perfectly comfortable).

How to check if your baby is too hot or too cold

Often the first port of call for parents when checking their baby's temperature is to feel their hands and feet. However, due to a baby's developing circulatory system, babies' hands can feel cold when they are at a perfectly comfortable temperature. Here's what to do to check your baby's temperature while they're sleeping:

Feel your baby's chest or the back of their neck:

Rather than feeling your baby's hands to test their comfort temperature, gently feel the back of their neck or chest to gauge how comfortable they are.

What can you do if your baby's room is too warm?

If it's likely that the temperature of the room will rise above 22°C, make sure your baby is dressed in lightweight, breathable clothing and a swaddle with a lower TOG rating. In very high temperatures, you can use a fan in the room to circulate the air.

Important: ensure the fan is a safe distance away from the crib or bassinet and not in direct line with your baby.

What can you do if your baby's room is too cold?

On cooler evenings, dressing your baby in breathable layers with a temperature-appropriate swaddle or sleep bag could be all you need to keep them warm through the night. If your baby still feels cold, try adding an extra layer underneath, but always check a dressing guide for suggestions based on your room temperature.

A room thermometer can be a handy tool to help you choose the right layers. The Lullaby Trust suggests a room temperature of 16 to 20°C for safe baby sleep. But remember, the thermometer is just a guide. What really matters is how your baby is dressed for the conditions. That's where TOG (Thermal Overall Grade) ratings come in. They take the guesswork out of choosing the right sleepwear for the season and temperature.

For more on creating a safe, comfortable sleep space, check out our nursery setup guide.

How to keep your baby a comfortable temperature during sleep

Choose lightweight layers, rather than heavy sleepwear

Lightweight, breathable layers like bodysuits and rompers underneath a sleeping bag or swaddle are ideal. They make it easy to add or remove a layer if the room temperature changes overnight. Thick, heavy garments can lack breathability and increase the risk of overheating. The Lullaby Trust recommends a room temperature of 16 to 20°C with light bedding or a lightweight, well-fitting sleep bag. If you're unsure what to dress your baby in, our TOG rating guide has dressing suggestions for different room temperatures.

Avoid over-dressing your baby at night

If you're on the fence between two options, go lighter. Overheating is a known risk factor for SIDS, while a baby who's a little cool will usually wake and let you know. Skip the hats, beanies, duvets, and quilts for sleep. To check whether your baby is a comfortable temperature, feel their chest or the back of their neck. Their hands and feet may feel cool, and that's completely normal

Keep your baby's crib free of blankets, loose sheets and pillows

The safest cot is a clear cot. The Lullaby Trust recommends removing anything that isn't essential, including loose blankets, pillows, bumpers, and toys, as these could cover your baby's face and obstruct their breathing. A well-fitting swaddle or sleeping bag with fitted necks and armholes is a safer alternative to loose bedding.

For more on creating a safe, comfortable sleep space, check out our nursery setup guide.

Frequently Asked Questions

What temperature should a baby's room be?

The recommended baby room temperature is between 64 and 72°F (16-22°C). This range helps reduce the risk of overheating, which is a known risk factor for SIDS. Use a room thermometer to keep track, and dress your baby in appropriate TOG-rated sleepwear to match the conditions.

How do I know if my baby is too hot while sleeping?

Check the back of your baby's neck or chest rather than their hands and feet. Signs your baby is too hot include sweating, flushed cheeks, clammy skin, and rapid breathing. If they feel warm, remove a layer or lower the room temperature.

Is 22°C too hot for a baby's room?

22°C is at the upper end of the recommended range. It's not necessarily too hot, but you'll want to make sure your baby is dressed lightly in breathable fabric and a low TOG swaddle or sleep bag. If the room creeps above 22°C, consider using a fan to circulate air (placed at a safe distance from the cot).

Should I use a fan in my baby's room?

Yes, a fan can help circulate air and keep the room comfortable on warmer nights. Just make sure it's placed at a safe distance from the crib, isn't blowing directly on your baby, and that any cords are well out of reach. A fan is a safer option than adding or removing blankets.

Key takeaways

Aim for 16-22°C.
This is the recommended baby room temperature range. Overheating is a risk factor for SIDS, so cooler is generally better than warmer.
Check the neck, not the hands.
Baby hands often feel cool even when they're perfectly comfortable. Feel the back of their neck or chest for a more accurate read.
Layer up, don't pile on.
Lightweight layers under a TOG-rated swaddle or sleep bag let you adjust easily if the temperature changes overnight.
Skip the blankets and hats.
No loose bedding in the crib, and no hats or head coverings during sleep. Babies regulate temperature through their head and face.
Use a room thermometer.
Your own comfort isn't always the best gauge. A simple room thermometer takes the guesswork out of it, especially on nights when the temperature shifts.

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