
Keeping newborns warm during winter is a common concern for new parents. Newborns are still developing the ability to regulate their internal temperature, so it is crucial to ensure they are kept warm, but not too warm. The ideal sleep temperature for a baby is between 65 and 72 degrees Fahrenheit. To achieve this, parents can use wearable blankets or sleep sacks, and dress their babies in layers, such as footed onesies or fleece pajamas. It is important to avoid loose blankets and hats, as these can pose a suffocation risk.
| Characteristics | Values |
|---|---|
| Room temperature | 65–72 °F (18.3–22.2 °C) |
| Baby's temperature | Warm but not hot |
| Clothing | Sleeper, sleep sack, wearable blanket, footed pajamas, onesie, jumpsuit, layers of clothing |
| Headwear | None |
| Blankets | Thin, lightweight, and tucked in at chest level |
| Sleeping bag | Cotton, micro-fleece, or wool |
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What You'll Learn

Keep the room temperature between 65-72°F
Keeping your newborn's room temperature between 65-72°F is important for several reasons. Firstly, newborns are still developing the ability to regulate their internal temperature, so maintaining a comfortable room temperature is crucial. Secondly, overheating has been linked to sudden unexpected death in infancy (SUDI), including sudden infant death syndrome (SIDS). Therefore, it is essential to keep the room temperature within a safe range.
To achieve this ideal room temperature, you can use a thermostat to set the temperature between 65°F and 72°F. This range will benefit your baby's skin and reduce the risk of SIDS. Additionally, you can invest in energy-efficient window coverings to help retain heat and keep the cold out. Keeping the doors closed in unoccupied rooms can also help maintain the desired temperature.
It is important to remember that babies tend to run warmer than adults due to their higher metabolism. Therefore, they may not need as many layers as you think. You can assess your baby's comfort by feeling the skin on their tummy, back, nose, or back of the neck. If their nose feels cold, it may indicate that the room temperature is too low. A warm neck suggests an adequate body temperature, while a sweaty hairline may indicate that your baby is too warm.
To ensure your baby stays warm within this room temperature range, you can dress them in a sleeper and a sleep sack or wearable blanket. Sleep sacks are wearable blankets that provide an extra layer of warmth without the risk of loose blankets in the crib. You can pair a sleep sack with a onesie or footed pajamas underneath for additional warmth on colder nights. However, avoid bundling your baby up too much, as this can lead to overheating.
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Dress newborns in a sleeper and sleep sack
Keeping your newborn warm and cosy during winter is essential, but it's equally important to ensure that they don't overheat. Overheating has been linked to sudden unexpected death in infancy (SUDI), including sudden infant death syndrome (SIDS) and fatal sleep accidents. Therefore, it's recommended to use a sleeper and a sleep sack to keep your newborn warm without the risk of overheating.
A sleep sack, also known as a wearable blanket, is a safe option to provide your newborn with an extra layer of warmth during winter. It's a good idea to transition your baby to a sleep sack once they have passed the newborn phase and the moro reflex, which is the twitchy reflex that wakes them up. A sleep sack will help prevent them from jumping out of the crib as they grow into toddlers. It's important to choose a sleep sack of the right size for your baby, ensuring their face remains uncovered when they lift their arms. Some sleep sacks have a TOG (thermal overall grade) rating to help you select the appropriate warmth level for the room temperature.
When using a sleep sack, it's crucial to ensure that your newborn's head remains uncovered. Babies cool themselves down by releasing heat from their heads and faces. Headwear can cause overheating and, if it slips down, can pose a strangulation or
The optimal room temperature for your baby's room is 68-72 degrees Fahrenheit (20-22 degrees Celsius). You can adjust the room temperature accordingly and dress your baby similarly to how you dress yourself. For example, if you're wearing a t-shirt and a sheet, your baby might wear a onesie and a lightweight sleep sack. If you're wearing flannel pyjamas under a heavy comforter, you might opt for fleece-footed pyjamas and a sleep sack or swaddle.
It's important to remember that less is more when dressing your newborn for sleep. Aim for lightweight clothing, such as a onesie or sleeper, under the sleep sack to help them feel secure and cosy without over-bundling. As a general rule, your baby should have only one more layer of clothing than an adult would need to stay warm in the same bedroom. This will help prevent overheating and ensure a safe sleep environment for your newborn.
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Footed pajamas are a good option for winter nights
Keeping your newborn warm during the winter is essential, but it's equally important to ensure they don't overheat. Footed pajamas are a good option for winter nights as they are designed to keep your baby warm without the need for additional socks. They are made from soft, stretchy, and lightweight materials, such as cotton, polyester, or merino wool, which provide a cozy and gentle feel against your baby's delicate skin.
Footed pajamas are available in various fabrics to suit different preferences and needs. Merino wool, for example, is a natural fiber that helps regulate body temperature, preventing your baby from overheating or waking up cold. It is also breathable, wicks away moisture, soft, and naturally fire-resistant. Cotton is another excellent option, especially for babies who tend to overheat in polyester. It is soft, stretchy, and allows for better breathability than polyester.
When choosing footed pajamas, it's important to ensure they fit your baby properly. A proper fit ensures safety and comfort for your baby. Additionally, look for features that make your life easier, such as two-way zippers for quick diaper changes without fully undressing your baby. Some footed pajamas also include integrated no-scratch mittens for newborns and non-slip grips on the soles for early walkers.
The thickness of the footed pajamas should be considered, especially if you plan to use them with a sleep sack or sleeping bag. The Milk Snob Sleep Bag, for instance, has a 1.0 TOG rating, suitable for temperatures between 69-73 degrees Fahrenheit, and can be paired with footed pajamas for added warmth. It's important to note that the optimal room temperature for your baby's room is 68-72 degrees Fahrenheit.
Footed pajamas are a safe and comfortable option for newborns during winter nights. They provide warmth, comfort, and convenience, ensuring your baby stays cozy throughout the night without the risk of overheating. Remember to regularly check your baby's temperature by feeling the skin on their tummy or back. They should feel warm but not hot, and their head should remain uncovered during sleep.
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Avoid loose blankets, pillows, and hats
Keeping your newborn warm and cosy during winter is essential, but it's equally important to ensure their safety. Here are some reasons why you should avoid loose blankets, pillows, and hats for your newborn:
Loose Blankets
Loose blankets can pose a serious risk to your newborn's safety. According to the American Academy of Pediatrics (AAP), soft and loose items in the crib, such as blankets, increase the risk of sudden infant death syndrome (SIDS) and accidental suffocation. This risk is especially high for infants under one year old. If a loose blanket covers your baby's nose and mouth, they may not have the muscle strength or control to move it away, leading to suffocation. Instead of loose blankets, opt for a wearable blanket or a sleep sack, which zips up to the baby's neck and billows out towards their feet, ensuring their head remains uncovered.
Pillows
Pillows, like loose blankets, can obstruct your newborn's nose and mouth, leading to accidental suffocation. They are considered a soft object that can increase the risk of SIDS. It is recommended that babies sleep on a firm surface with a tight-fitted sheet and nothing else in the crib, including pillows.
Hats
While hats may seem like a simple way to keep your newborn warm, they can actually pose a safety risk. Newborns regulate their body temperature through their heads, and covering their heads while sleeping can lead to overheating. Additionally, hats can slip and cover your baby's face, creating a strangulation or suffocation hazard. Instead of a hat, you can maintain a comfortable room temperature by using energy-efficient window coverings to retain heat and adjusting your baby's clothing accordingly.
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Dress newborns in layers
Keeping your baby warm in winter is important, but overheating can increase the chances of sudden infant death syndrome (SIDS). The key is to keep your baby's head uncovered and dress them in layers to ensure they are warm but not too warm.
A good rule of thumb is to give your newborn one extra layer of clothing than what you're wearing. For example, if you're wearing a t-shirt and jumper, dress your baby in a vest, sleepsuit, and cardigan or jumper. If you feel chilly, your baby probably does too. It's important to adjust your baby's clothing rather than heating or cooling the room.
Babies cool themselves down by releasing heat from their heads and faces. They can quickly overheat if they fall asleep wearing hats or beanies, and headwear can also slip and cover their faces, creating a strangulation or suffocation hazard.
When it comes to bedding, avoid thick, fleecy, or padded blankets. Instead, opt for thin, lightweight blankets or coverings. A safe infant sleeping bag or suit can be a good option to keep your baby warm without the need for blankets. Make sure your baby's face isn't covered by the material when they lift their arms.
If you're using a sleeping bag and your baby still feels cold, add an extra layer of clothing. You can also use a thin, lightweight blanket, tucked in securely at chest level. In cool weather, dress your baby in a lightweight jumpsuit or layers of clothing under the wrap, adjusting the number of layers according to the room temperature.
It's normal for a baby's hands and feet to feel cool, but this isn't a good indication of their body temperature. Check their skin on the tummy or back; they should feel warm but not hot. A room temperature of 16 to 20°C is considered comfortable and safe for sleeping babies.
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Frequently asked questions
The ideal room temperature for a baby's room is between 65 and 72 degrees Fahrenheit.
Newborns can sleep in a wearable blanket or a sleep sack. It is also recommended to dress newborns in a footed onesie under the sleep sack.
You can check a newborn's temperature by feeling the skin on their tummy, back, nose, or back of the neck.
If your newborn feels too cold, you can add an additional layer, such as a onesie and a sleep sack, or dress them in fleece footed pajamas.
Yes, it is important to keep a newborn's head uncovered during sleep. Blankets, pillows, and loose articles should also be avoided in the newborn's sleep space to prevent suffocation risks.






































