Baby sleep · room 18°C

What TOG should a baby wear at 18°C?

At 18°C, the room is in a common cooler sleep range, so the sleeping bag and clothing underneath need to be considered together.

Quick answer

18°C starting point

Common TOG reference

2.5 TOG is a common reference range

Under the bag

Fitted sleepwear according to the sleeping-bag guide

Check

Neck or upper back later
Manufacturer temperature and fit guidance

Why this TOG range?

A 2.5 TOG sleeping bag is a common reference point for rooms around 16–20°C. Check the temperature and fit guide for your specific sleeping bag, keep the sleep space clear, and adjust the clothing underneath rather than adding loose bedding.

Check your sleeping bag at this room temperature

The room temperature is fixed on this page. Choose the TOG you actually use or are considering; no personalised result is shown until you check it.

What can change the answer?

TOG measures the insulation of the sleeping bag, not the total warmth of the whole outfit.
Do not add a loose blanket on top of a sleeping bag.
If your baby feels unusually hot, unwell or feverish, use appropriate health guidance rather than a generic TOG chart.