Békésen alvó kisbaba kiságyban, 20 °C-os szobahőmérséklet jelöléssel

How to Dress Your Baby for Sleep in a 20 Degree Room

Dressing your baby for sleep can feel uncertain for many parents, especially when you are trying to find the right balance between keeping your little one warm enough, but not letting them overheat during the night. In the UK, many families sleep in a bedroom of around 20°C, which is generally considered a comfortable and pleasant temperature. In warmer months, this can also be achieved with air conditioning.

But what sleepwear combinations work best, and what should you pay attention to during the first few weeks? Is it worth using a baby sleeping bag, and if so, what TOG rating should you choose? When can you move on to pyjamas?

With a few simple guidelines, you can quickly find the outfit in which your baby can rest peacefully, comfortably and safely. Let’s go through them together.

 

What Should My Baby Wear in a 20 Degree Room?

Little girl wearing a pink and white patterned LiaaBébé sleeping bag with feet

In short, LiaaBébé recommends the following:

In a 20°C room, these combinations usually work well:

  • short-sleeved baby bodysuit + sleepsuit + 1.5 TOG baby sleeping bag

  • long-sleeved baby bodysuit + 2.5 TOG baby sleeping bag

  • newborns often need one extra thin layer

  • for older children, pyjamas with a T-shirt or vest underneath and a baby blanket may be enough

The most important thing is to always check your baby’s neck and back:

  • if they feel sweaty, hot or damp, remove one layer

  • if they feel cool to the touch or their skin looks mottled, add one light layer

Natural, well-ventilated fabrics, such as bamboo viscose, can help maintain a more even feeling of warmth.

Why Is a 20 Degree Room Temperature Ideal?

According to professional recommendations, a bedroom temperature between 20 and 22°C is considered one of the most suitable ranges for babies in our usual climate. In this environment, the risk of overheating is lower, while your baby can still sleep comfortably. Of course, every household is different, and it is natural to take the comfort of the rest of the family into account too.

What we find comfortable can also depend on where we live. In northern countries, for example, people often sleep in cooler rooms, around 18°C. For many of us, temperatures below this may no longer feel comfortable.

Naturally, children’s needs vary too. Some warm up quickly, while others are more prone to feeling chilly. This is why general guidance should always be adjusted to your own baby’s needs.

Over time, you will start to notice:

  • how quickly your baby warms up

  • how much they move in their sleep

  • whether they tend to kick off the blanket

  • which clothes help them sleep more peacefully

 

Babies’ Temperature Regulation Is Still Developing

A baby’s body cannot regulate temperature as effectively as an adult’s. Babies can warm up more easily, but they can also cool down more quickly.

This is especially true for newborns and premature babies:

  • they sweat less

  • they produce more heat

  • they retain more heat

  • they are more sensitive to changes in their environment

This is why an overdressed baby may:

  • become sweaty

  • sleep more restlessly

  • develop heat-related rashes

  • wake more often

Baby’s thighs with red heat rash

Newborns and premature babies are not yet able to balance external temperature changes effectively. That is why it is important to make sure they do not become too cold or too warm.

Premature babies are often born with a lower body temperature, which can carry risks. This is one of the reasons why they may need the carefully controlled environment of an incubator, where their body temperature can be regulated.

 

Newborns Usually Need One Extra Layer

During the first few weeks, your baby is still more sensitive to cooling down, so they often need one extra light layer.

In a 20°C room, a good choice for a newborn may be:

  • short-sleeved baby bodysuit

  • zipped sleepsuit

  • 1.5 or 2.5 TOG baby sleeping bag

Little girl wearing a summer sleeping bag with feet from LiaaBébé

Always check your baby’s neck and back:

  • comfortably warm skin is ideal

  • a sweaty neck may suggest overheating

  • a cool back may suggest they need more clothing

 

The Room Temperature Can Change During the Night

We often do not notice it, but the temperature in the home can fluctuate overnight depending on the type of heating. This is especially true with:

  • central heating

  • solid fuel heating

  • sleeping with a window open

  • transitional seasons

It is worth placing a thermometer near the baby’s cot, as there can be a difference of 2 to 3 degrees between different parts of the home. If you know the usual pattern of temperature change during the night, you can add an extra layer or choose a warmer sleeping bag when your baby wakes.

 

Our Body Temperature Also Changes During Sleep

It is not only the air temperature in the room that can change. Our body also follows a natural rhythm during sleep:

  • as we fall asleep, our body temperature drops slightly

  • towards the early morning, it gradually rises

This is why your baby’s clothing should not only be warm, but also breathable and comfortable. Fabrics that can adapt to changes in temperature may help create a more comfortable sleep environment. This is exactly why we recommend LiaaBébé baby clothes, baby sleeping bags and baby blankets made from LiaaBébé bamboo fibres: they are designed to help support a more even body temperature for your little one.

 

Practical LiaaBébé Combinations with a Few Beautiful Pieces

Option 1

Three toddlers wearing soft bamboo sleeping bags from LiaaBébé

This is one of the most popular combinations, as it is comfortable, easy to layer and ideal for most babies.

Option 2

  • Long-sleeved baby bodysuit

  • 2.5 TOG baby sleeping bag, which can be a classic baby sleeping bag or a sleeping bag with feet for little ones who are already on the move

Baby resting with a peach blossom coloured and white patterned LiaaBébé baby blanket

Option 3, for older children

If your child can already cover themselves independently:

  • Two-piece children’s pyjamas in special colours and prints. In the Mix&Match Pyjama Set, you can find three different colours and patterns.

  • Thin T-shirt or vest

  • Lighter baby blanket

At this stage, a sleeping bag may be less necessary, although many toddlers continue to enjoy its safe, snug feeling for a long time.


Why Is a Sleeping Bag So Practical?

Most babies kick off the blanket during the night, but they cannot yet pull it back over themselves. This means they can easily become uncovered and feel cold for hours if no one notices straight away.

A well-chosen baby sleeping bag, however:

  • keeps warmth more even

  • does not slip off

  • does not move onto the face

  • may be a safer option for sleep

  • can help the whole family enjoy more peaceful nights

There is also a practical version of the baby sleeping bag designed for little ones who are already on the move: the sleeping bag with feet. It has separate leg sections finished with soft ankle cuffs, so your child can wear it comfortably during sleep or even while playing.

 

Parent Feedback and Experiences

We always value feedback from our customers, as it helps us understand families’ needs better. Many mums tell us that once they found the right sleepwear combination, their nights became calmer too. After they started using a sleeping bag, they no longer woke every hour to check whether their baby had kicked off the blanket.

The zipped sleepsuit is one of the biggest favourites. It is wonderfully practical for night-time dressing, even in dim light, because it is extra flexible and opens easily with a zip.

 

FAQ, Dressing Your Baby in a 20 Degree Room

When can I start using a sleeping bag with feet?

LiaaBébé sleeping bags with feet are available from size 74. They can also be chosen even if your child is not walking yet, as they are very comfortable for crawling and moving around too.

If I would like to use a baby blanket, what should I choose?

Just like a sleeping bag, it should be warm enough for the room temperature. On our website, you can find beautifully patterned baby blankets, so it is worth taking a look.

What does the TOG rating mean?

TOG is a unit of measurement that indicates the thickness and warmth of a fabric. It shows how well baby clothing, a sleeping bag or bedding helps keep your child warm. The higher the TOG rating, the warmer the sleeping bag or bedding.



  • 0.5 TOG for room temperatures of 22 to 25°C

  • 1.5 TOG for room temperatures of 20 to 23°C

  • 2.5 TOG for room temperatures of 18 to 21°C


When dressing your baby for sleep in a 20°C room, the key is layering, choosing the right TOG rating and using breathable fabrics. Watch your child’s signals, check their neck from time to time, and you will soon get a feel for how to fine-tune their sleepwear. With a little experience, you will find the combination in which your baby sleeps most peacefully, and the rest of the family can too.



Written by Mónika Veres


Sources:

NHS — How to dress a newborn baby

The Lullaby Trust — Your baby’s room temperature

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