
It is essential to ensure that your newborn is warm and comfortable at night for their comfort and well-being. Newborns cannot communicate their discomfort like older children or adults, so it is important to recognise the signs that they are too cold. Their sleep environment is crucial, and room temperature plays a key role in ensuring they are snug. The ideal room temperature for sleep is between 18°C to 22°C (65 °F and 72°F). Babies do not fully regulate their body temperature until around 11 weeks, and even after that, they rely on their sleep environment and clothing to stay warm.
| Characteristics | Values |
|---|---|
| Room temperature | Between 65 °F and 72 °F (18°C to 22°C) |
| Body temperature | Between 97.7°F to 100.4°F |
| Restlessness | Moving around the cot to find a warm place to sleep |
| Sweating | Take a layer off or change the baby's clothes |
| Baby's hands and feet | Controversial, but if they're cold, the baby is likely cold |
| Sleepwear | One layer more than an adult would need for comfort in the same environment |
| Swaddle | For younger babies who are not yet rolling over |
| Sleeping bag | For babies who have started rolling over |
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Swaddling
- Ensure the swaddle is snug but not too tight. A good rule of thumb is to be able to fit two to three fingers between the blanket and your baby's chest.
- The bottom of the swaddle should be loose enough to allow for healthy hip development. Your baby's legs should be able to stay bent and flared out, as if they were lying on their back without a swaddle.
- Always place your baby on their back to sleep, whether swaddled or not. This is the safest position.
- Discontinue swaddling once your baby becomes more active and starts trying to roll over. The American Academy of Pediatrics (AAP) recommends stopping swaddling at two months of age.
- Use a firm mattress with a fitted sheet. Avoid soft bedding, pillows, and stuffed toys, as these can increase the risk of sudden infant death syndrome (SIDS).
- Check your baby's sleeping area for drafts and adjust the cot's placement to avoid direct drafts.
- If your home is dry, consider using a humidifier to maintain a comfortable humidity level, especially if you use ducted heating.
- Swaddling is not necessary all day; it is most beneficial when your baby is fussy or sleeping.
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Room temperature
The American Academy of Pediatrics (AAP) advises that babies should wear one layer more than an adult would need for comfort in the same environment. This helps to avoid overheating, which can be dangerous for babies and increase the risk of SIDS (Sudden Infant Death Syndrome). Signs of overheating include sweating, flushed skin, and a warm chest. It is also important to keep the baby's face and head uncovered to reduce the risk of suffocation and keep their airways clear.
To maintain a comfortable room temperature, you can use a space heater, but be sure to run it before your baby goes to sleep and turn it off when they are in bed. You can also use a hot water bottle or a microwavable heating pad to warm up the baby's crib, but these should be removed before placing the baby in the crib.
Additionally, you can use a swaddle or a sleeping bag to keep your baby warm. A swaddle provides a cocoon-like atmosphere that is soothing and helps to stave off startle reflexes that could wake the baby. When using a swaddle, ensure it is snug but not too tight, and always place the baby on their back to sleep. After your baby starts rolling over, transition to a sleeping bag, which provides warmth without restricting movement.
Remember, every baby is different, so always trust your instincts and monitor your baby's comfort level.
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Baby's body temperature
Babies don't fully regulate their body temperature until around 9 to 12 months. Even after this stage, it's important to check in with your baby regularly to ensure they are at a comfortable temperature. A normal body temperature range for babies is between 97.7°F to 100.4°F.
The ideal room temperature for a baby's sleep is between 65°F and 72°F (18°C to 22°C). To check if your baby is too cold, you can feel the back of their neck by the shoulders, as this area is closer to their core body temperature while sleeping.
If your baby is too cold, they will likely be uncomfortable and may wake up or become fussy. They may also move around their cot constantly to try and warm themselves up or find the warmest place to sleep. You can keep your baby warm by swaddling them or using a sleeping bag. It's important to ensure your baby is dressed appropriately for the temperature of their room. For example, if your baby is still cold, you could add a sleeveless bodysuit under their romper or a pair of lightweight, breathable socks.
Overheating for babies during sleep can be dangerous as it can cause dehydration and increase the risk of SIDS (Sudden Infant Death Syndrome). To prevent overheating, the American Academy of Pediatrics (AAP) advises dressing babies in no more than one layer more than an adult would need for comfort in the same environment. Signs of overheating include sweating, flushed skin, or a warm chest.
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Restlessness
Babies cannot communicate their discomfort like older children or adults, so it is important to recognise the signs that your baby might be too cold. They may also wake up more frequently when feeling cold.
To prevent your baby from getting too cold, creating an optimal sleep environment is essential. The ideal room temperature for a baby to sleep in is between 68°F and 72°F (20°C and 22.2°C). This range creates a comfortable and safe sleep environment for your baby.
To maintain this temperature, you can use a space heater, but remember to turn it off when the last person in your home goes to bed, as it is a fire hazard. Thick curtains, rugs, and tinfoil on the windows can also help insulate the room and keep the cold out.
Additionally, ensure your baby is dressed appropriately for the temperature. A good guide is to dress your baby in one more layer than you would be comfortable wearing yourself. For example, in a cold room, you can layer a onesie, pajamas, and a sleep sack. Avoid thick sweaters or other winter fabrics, as these can cause overheating.
Swaddling is also an effective way to keep your newborn warm and provide a sense of security. Ensure the swaddle is snug but not too tight, and always place your baby on their back to sleep.
By recognising the signs of restlessness and discomfort, and by setting up an optimal sleep environment, you can help ensure your baby stays warm, comfortable, and restful throughout the night.
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Baby's hands and feet
It is a common concern for parents to worry about whether their baby is too cold at night. This is because babies cannot communicate their discomfort in the same way that children or adults can.
One way to tell if your baby is too cold is to feel their hands and feet. If their hands and feet are cold to the touch, then it is likely that your baby is also cold. However, some people argue that you cannot rely on feeling a baby's hands and feet because they are the furthest away from the core of the body. Instead, it is recommended that you feel the back of their neck by the shoulders, as this area is closer to the core body temperature while sleeping.
Babies have underdeveloped circulatory systems, and their bodies regulate temperature differently from adult bodies. For this reason, it is important to ensure that your baby is dressed appropriately for the temperature of their sleeping environment. In the warmer months, a sleeveless bodysuit underneath a lightweight swaddle may be sufficient. In cooler temperatures, you can add a pair of lightweight, breathable socks, or a pair of long-sleeved pyjamas.
If your baby is still feeling cold, you can adjust their clothing by adding a layer, such as a sleeveless bodysuit under their romper or a pair of socks. You can also use a TOG-rated sleeping bag or swaddle to ensure your baby's comfort temperature stays consistent overnight.
It is important to remember that every baby is different, and you should always trust your instincts when it comes to your baby's comfort and well-being.
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Frequently asked questions
There are a few signs that your baby might be too cold. If they are restless and moving around their cot a lot, they might be trying to find a warmer place to sleep. You can also check the back of their neck by their shoulders, as this area is closer to their core body temperature. If their hands and feet feel cold, then they probably are.
Swaddling is a great way to keep newborns warm. It provides a sense of security and prevents startle reflexes from waking them. For older babies who can roll over, a sleeping bag is a good alternative to loose blankets. You can also use a humidifier to maintain a comfortable level of humidity in the room.
The American Academy of Pediatrics (AAP) advises that babies should wear no more than one layer more than an adult would need for comfort in the same environment. You can use a combination of sleepwear such as a romper or bodysuit, or a bodysuit with leggings depending on the temperature. If your baby is still cold, you can add a sleeveless bodysuit underneath or use a pair of lightweight, breathable socks.
The ideal room temperature for sleep is between 18°C to 22°C (65 °F and 72 °F) or 68 to 72 degrees Fahrenheit.











































