What Is the Best Summer Sleeping Temperature?
By Shelley Frost
June 10, 2025
What's the best summer sleeping temperature? You'll likely get a wide range of answers based on personal preferences. Some people prefer a chilly Arctic feeling with the AC cranked on full blast. Others like a warmer sleeping environment that avoids frostbite on their noses.
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It's common to see a temperature range rather than one specific number. But when the mercury outside rises, you'll likely want to drop the indoor thermostat setting to keep your cool and sleep comfortably.
What Is the Best Summer Sleeping Temperature?
The generally recommended sleeping temperature range is between 60 and 67 degrees Fahrenheit. A lower body temperature is part of your circadian rhythms and can help signal your body that it's time to sleep. Keeping your bedroom on the cool side could help you fall asleep faster and enjoy higher-quality sleep.
However, the recommended temperature for HVAC system efficiency is higher — usually between 72 and 78 degrees to keep the system from working so hard. You'll probably toss and turn if you keep your thermostat that high at night. Instead, try the higher end of the 60- to 67-degree range to balance comfort and energy efficiency.
What Is the Best AC Temperature for Sleeping?
You may need to adjust your air conditioner thermostat setting for the summer months. The hotter outdoor temperatures and longer days often heat up your home and make your AC work harder to cool the space.
Setting your thermostat between 60 and 67 degrees, depending on your personal preferences, should create a comfortable sleeping environment. However, how cool your bedroom feels can vary depending on several factors. The temperature where the thermostat is located impacts how much the AC runs. If it's located in a cooler area, the AC might not run as much, leaving your bedroom warmer.
Your bedroom might also heat up due to its location and how much direct sunlight it receives. If it heats up significantly during the day, it might take more time for the AC to catch up.
Consider programming your thermostat to adjust the setting automatically before your bedtime. That way, you don't have to remember to adjust it manually and your room will be cool before you go to bed.
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How Can I Keep My Bedroom Cool in the Summer?
You want to stay cool, but you also don't want to pay a huge AC bill in the summer. You can keep your bedroom cooler in the summer with these tips:
Hang insulating window coverings. Thermal curtains block heat from outside and keep your room dark and cool, allowing you to sleep in without being awakened by the sun. Keep the curtains closed during the day, especially when direct sunlight shines on your bedroom windows, to keep the bedroom temperature lower throughout the day. Your AC won't have to work as hard to cool the space.
Run a fan. Whether you use a ceiling fan or a floor fan, keeping the air moving in your bedroom can help you feel cooler. For some people, the white noise of a fan running is also soothing at night.
Change your bedding. Lightweight, breathable sheets and blankets made from natural fibers often feel cooler. You have the comfort of covering up without a heavy, insulating feel.
Buy a cooling mattress and pillows. Some pillows, mattresses and mattress toppers are made from cooling materials that help dissipate your body heat and improve airflow in your bed. Gel-infused memory foam is a common material that has this effect. If you always feel hot in your bed, consider switching to these products.
Reduce heat-generating items. Appliances, electronics and traditional incandescent bulbs can all generate some heat when they're operating. Replace light bulbs with CFLs or LEDs to eliminate that heat source. Use electronics that get hot as little as possible in and near your bedroom.
Use your exhaust fan. If your bedroom has an en suite bathroom, limit the length of hot showers and run the exhaust fan to remove the heat and humidity from the space to keep it from traveling into the bedroom.
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