Winter vs summer: adjusting your babe's sleep environment through the seasons

By Stellar Baby Updated 7 July 2026 1 min read

Here's the thing about the seasons: the comfortable range your babe sleeps in doesn't actually change. What changes is how hard you have to work to hold it. Winter and summer are just two different versions of the same job.

The range stays the same, the challenge changes

You'll see a comfortable range cited a lot, around 16 to 20 degrees, and it's worth knowing. But we don't prescribe a number, and neither does Red Nose. The point was never chasing a figure, it's dressing your babe for whatever the season is doing. What changes with the calendar is the effort to hold things comfortable, not a number you're aiming for.

Winter: warming without overdoing it

In the cold months it's about gentle, steady warmth and a cosier layer, a warmer TOG, rather than piling blankets on. Did you know? Winter is actually when rates of the risk of overheating is highest. Red Nose suggests checking the chest or back of the neck if you're ever unsure. 

Summer: staying comfortable safely

In the heat it's airflow, blinds during the day, and lighter layers at night. Dress your babe for the temperature in their environment, not what the outside temperature is.

Dressing to suit each season

The principle is the same year-round: match the layers to the environment. Our TOG and degree-by-degree guides give you the quick version for whatever the temperature's doing.

Seasons change what the room does overnight. The app updates the suggestion as it moves.

The same applies away from home. Here is tracking your babe's room conditions while travelling.

Shoulder seasons and overnight swings

Spring and autumn are sneaky, warm days and cool nights. The environment can swing a fair bit overnight, which is where a live reading helps. Orbie tracks the temperature where your babe sleeps and keeps the layer suggestion current as it shifts. Stay informed and set your own alerts, so you can know when things change, on your own terms.

This article is general information, not medical advice. If you're ever worried about your little babe, trust your gut and reach out to your GP, child health nurse, or Pregnancy, Birth and Baby on 1800 882 436.

Sources

The comfortable range stays the same all year; it's the challenge that changes with the seasons.

Stellar Baby
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Stellar Baby

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Common questions

How should I dress my baby for sleep in winter?

Aim for the same comfortable environment range and adjust the layers up, using a warmer TOG. Red Nose suggests checking their chest or back of the neck so it stays comfortable rather than warm.

How do I keep the nursery cool in summer?

Keep the environment in a comfortable range with airflow, blinds during the day, and lighter layers at night. Dress your babe to suit the temperature rather than the calendar.

Should I use a heater or aircon in the nursery?

Both can help keep the environment in a comfortable range if used gently and safely. The aim is a steady, comfortable temperature, not a fixed number.