Ideal Room Temperature For Sleeping

Updated: June 19, 2026

Temperature plays an important role in sleep quality. A bedroom that is too hot or too cold can make it difficult to fall asleep, stay asleep, and wake up feeling refreshed. Maintaining an appropriate room temperature helps support the body's natural sleep cycle and improves overall comfort.

Sleep experts generally recommend keeping the bedroom cooler than most living areas. A slightly cool sleeping environment can help the body prepare for rest and support deeper, more restorative sleep.

What Is The Ideal Room Temperature For Sleeping?

For most adults, the recommended bedroom temperature is between 18°C and 20°C (64°F to 68°F).

This range helps the body regulate its core temperature naturally during sleep. Individual preferences may vary slightly, but temperatures within this range are commonly recommended by sleep specialists.

Temperature	Sleep Comfort
16°C - 18°C	Cool but comfortable for many people
18°C - 20°C	Ideal sleeping range
21°C - 23°C	Comfortable but may feel warm for some sleepers
Above 25°C	May disrupt sleep quality

Why Temperature Affects Sleep

As bedtime approaches, the human body naturally lowers its core temperature. A cooler sleeping environment supports this natural process and can help people fall asleep faster.

When the bedroom becomes too warm, the body may struggle to release heat efficiently. This can lead to discomfort, frequent waking, and reduced sleep quality.

Benefits Of Sleeping In A Cool Room

• Faster sleep onset
• Improved sleep quality
• Fewer nighttime awakenings
• Better overall comfort
• Improved morning alertness
• More restful sleep cycles

Signs Your Bedroom Is Too Warm

A bedroom that is too warm may cause:

• Difficulty falling asleep
• Night sweats
• Restlessness
• Frequent waking
• Feeling tired after sleep

Signs Your Bedroom Is Too Cold

A room that is too cold can also affect sleep quality.

• Difficulty relaxing
• Cold hands and feet
• Frequent waking
• Reduced comfort
• Muscle tension

Ideal Temperature For Different Age Groups

Group	Recommended Range
Adults	18°C - 20°C
Older Adults	18°C - 22°C
Children	18°C - 21°C
Babies	16°C - 20°C

Humidity Also Matters

Temperature is only one factor affecting sleep comfort. Humidity influences how warm or cool a room feels.

Many experts recommend maintaining indoor humidity between 30% and 60% for comfort.

Tips For Better Sleep Temperature

• Use breathable bedding
• Improve room ventilation
• Keep blinds closed during hot days
• Monitor bedroom temperature regularly
• Use fans or air conditioning when necessary
• Reduce unnecessary heat sources

Frequently Asked Questions

Is 18°C a good temperature for sleeping?

Yes. Many sleep experts consider 18°C one of the best temperatures for sleep.

What is too hot for sleeping?

Many people find temperatures above 25°C uncomfortable for sleep.

Can room temperature affect sleep quality?

Yes. Temperature has a significant impact on sleep comfort and sleep quality.

What is the ideal bedroom temperature?

For most adults, 18°C to 20°C is considered ideal.

Should babies sleep in cooler rooms?

Many recommendations suggest maintaining nursery temperatures between 16°C and 20°C.