The ideal bedroom temperature for sleeping

When we think of good sleep, we often think of mattresses and rest – room temperature is underestimated. Yet, it is one of the strongest levers for restful sleep, because our body actively cools down to fall asleep.

The short answer: The ideal sleeping temperature for most people is around 16–19 °C. A rather cool bedroom supports the natural drop in core body temperature and thus helps with falling and staying asleep.

Why temperature controls sleep

To fall asleep, the body slightly lowers its core temperature – a signal that initiates sleep. A bedroom that is too warm makes this process difficult: the body cannot release enough heat, one sweats and wakes up more often. A cool environment, on the other hand, supports deep, undisturbed phases.

The ideal temperature at a glance

Room	Recommended temperature
Bedroom (adults)	approx. 16–19 °C
Children's room	approx. 18–20 °C
General comfort limit	not above 22 °C for sleeping

The exact comfortable temperature is individual – the principle is important: rather a little cooler than too warm.

Too warm or too cold – the consequences

If it's too warm, you sweat, become restless and wake up more often – deep sleep, in particular, suffers. If it's too cold, shivering can disturb sleep, but this can be more easily compensated for with a suitable duvet than heat. Therefore, if in doubt, cooler is better.

Tips for every season

• Summer: darken during the day, ventilate at night/in the morning, light bedding and a cool duvet. More in the article on cool mattresses.
• Winter: do not overheat, ventilate briefly but intensely before sleeping, a warmer duvet instead of a warm room.
• Year-round: choose breathable materials that wick away moisture.

Mattress, duvet, and bedding for the sleeping climate

The sleeping surface also influences how warm you feel. A breathable, adaptable mattress dissipates heat better than a construction that retains a lot of heat. Additionally, the right duvet provides the appropriate warmth class. Together with good sleep hygiene, this creates a stable sleeping climate.

Frequent questions about sleeping temperature

What is the ideal bedroom temperature?

For most people, about 16–19 °C. A rather cool environment supports falling and staying asleep, as the body cools down to sleep.

Is it better to sleep cool or warm?

Cool. Too much warmth disturbs sleep more because the body cannot release heat. Shivering can be more easily compensated for with a suitable duvet.

What to do if it's hot in summer?

Darken during the day, ventilate during cool hours, use light, breathable bedding, and ensure air circulation.