Cold winter nights worry many parents. The natural instinct is to pile on blankets, but for babies, warmth and safety need to go together. Too many loose blankets and too much heat can be more dangerous than a slightly cool room.
This guide explains how to keep your baby warm at night in a way that follows widely recommended safe sleep practices.
Safe sleep basics
Before thinking about warmth, keep these core safe sleep rules in mind. They are recommended by paediatric bodies such as the American Academy of Pediatrics and the UK NHS:
- Always place your baby on their back to sleep.
- Use a firm, flat sleep surface such as a cot or crib mattress with a fitted sheet.
- Keep the sleep space clear. For babies under 12 months, avoid loose blankets, pillows, bumpers and soft toys in the cot.
- Share a room, not a bed. Keeping the baby's cot in your room for the first months is recommended.
So how do you keep a baby warm without loose blankets? The answer is wearable warmth.
Wearable warmth: swaddles and sleep sacks
Swaddles for newborns
Swaddling wraps the baby snugly and can help newborns feel calm and settled. Zip swaddle sacks are much easier than wrapping a blanket, especially at 3 AM. The Dino Zip Swaddle and Rabbit Zip Swaddle are soft, simple options.
Important: stop swaddling with arms in as soon as your baby shows signs of trying to roll over. At that stage, move to a sleep sack with the arms free.
Sleep sacks for older babies
A sleep sack is like a wearable blanket. It keeps the baby warm all night without the risk of a blanket covering the face. Choose a size that fits well around the neck and arms so the baby cannot slip down inside.
What should my baby wear to sleep in winter?
Think in layers, not bulk:
- Mild room: a cotton bodysuit plus a sleepsuit, with a light swaddle or sleep sack.
- Cold room: a cotton bodysuit, a warmer sleepsuit and a thicker sleep sack.
Socks help in cold rooms. Caps are usually not needed for indoor sleep, because babies release heat through their heads and a cap can lead to overheating.
Room temperature
The NHS suggests a room temperature of around 16 to 20Β°C is comfortable for a sleeping baby. A cheap room thermometer helps you check. In many Pakistani homes, especially in Islamabad and Peshawar, rooms get colder than this at night, so dress the baby a little warmer rather than overheating the whole room.
Heater safety
Gas heaters are common in Pakistani homes in winter, and they need extra care around babies.
- Never leave a gas heater running in a closed room overnight. Gas heaters can produce carbon monoxide, which has no smell and can be deadly. Turn it off before sleeping or make sure the room is ventilated.
- Keep heaters well away from the cot and from bedding, curtains and clothes.
- Consider a carbon monoxide alarm if you use a gas heater regularly.
- Avoid hot water bottles and electric blankets in a baby's sleep space. They can cause burns and overheating.
Check your baby, not their hands
Babies' hands and feet often feel cool even when they are warm enough. Feel the back of the neck or the chest instead.
- Too hot: sweaty neck, damp hair, flushed cheeks, fast breathing. Remove a layer.
- Too cold: cool chest or neck. Add a layer or use a warmer sleep sack.
Where bedding sets and nests fit in
Soft bedding sets, carry nests and pillows are lovely for cuddles, supervised lounging and tummy time while you are watching. For sleep, especially overnight and when you are not watching, move the baby to a firm, flat cot with nothing else in it. Our Bedding Sets collection is designed for daytime comfort and the nursery, and our 4-Piece Sleeping Bag Set is useful for keeping the baby cosy on outings.
A night-time winter checklist
- Baby on their back, on a firm and flat surface
- Nothing loose in the cot
- Cotton base layer plus a warm sleepsuit
- Swaddle (for newborns) or sleep sack (once rolling starts)
- Room comfortably cool, around 16 to 20Β°C
- Gas heater off or room ventilated
- Check the back of the neck before you sleep
Frequently asked questions
Can my baby sleep with a blanket in winter?
For babies under 12 months, safe sleep guidance recommends avoiding loose blankets. Use a swaddle or sleep sack instead.
When should I stop swaddling?
Stop swaddling with arms in once your baby shows signs of rolling over. Then switch to a sleep sack with arms free.
Is it safe to use a heater in the baby's room?
Electric heaters placed away from the cot can be used with care. Gas heaters should never be left on in a closed room while anyone is sleeping because of the carbon monoxide risk.
Should my baby wear a cap at night?
Usually not indoors. A cap can cause overheating during sleep. Use warm layers on the body instead.
Final thoughts
Warm and safe go together when you rely on what your baby wears, not on what is piled around them. A good cotton base layer, a snug swaddle or sleep sack and a ventilated room will see your baby through the coldest nights. Find wearable warmth in our Soft & Cozy Swaddle collection.
This article is general information and not medical advice. If you have concerns about your baby's sleep or health, please speak to your paediatrician.