Choosing the Best Temperature—and Humidity Level—for Sleep

November 18, 2014

Tired of tossing and turning at night?

You can get a better night’s sleep by controlling these 2 factors: bedroom air temperature and humidity level.

Best temperature for sleep: Around 65 degrees F, according to the National Sleep Foundation.

Best humidity levels for sleep: Between 30% and 50%.

In this article, we’ll explain:

  • Why these temperature and humidity levels help you sleep soundly.
  • How you can better control these factors in your home.

How air temperature affects sleep

As you get drowsy, your body temperature dips. Your body is trying to achieve a “set point” for sleep, according to Web MD.

That’s why your bedroom’s air temperature is important. Too hot or too cold and it can interrupt your body’s internal temperature, making you restless throughout the night.

So keep your bedroom’s temperature around 65 degrees F.

If you have a warmer core, you probably have trouble sleeping and need to turn the temperature down below 65 (if your spouse will let you).

Best ways to control your home’s temperature

You could just keep the thermostat set on 65, but that could get expensive—especially in summer.

To stay cool without breaking the bank, try these 2 tips:

Turn on your ceiling fan. The wind-chill effect will make you feel cooler, letting you turn the thermostat up a few degrees.

Install a programmable thermostat. These thermostats can automatically change the temperature setting depending on how you program the schedule. For example, you can program the thermostat to lower to 65 around your typical bedtime and rise to 73 when you’re about to wake up.

How humidity levels affect sleep

The relative amount of humidity in the air can affect how comfortable you are when trying to get to sleep.

High relative humidity (that is, humidity above 50%) in particular can cause 2 comfort issues:

  • High humidity makes you feel hotter than the actual room temperature, causing discomfort and restlessness.
  • Due to the extra moisture in the air, dust mites and mold can grow and thrive, causing for those with allergies and asthma.

Keep an eye on your Florida home’s humidity level with a humidistat.

Best ways to control your home’s humidity

  • Install a whole-home dehumidifier.
  • Use the AUTO instead of the ON thermostat fan setting.
  • Seal your air ducts so they don’t pull in unconditioned air from your crawlspace or attic.
  • Make sure your central AC isn’t oversized, which can cause it to short cycle.

Let’s explain that last point in detail.

When an AC is too big for your home (most of them are), it short cycles. That means it runs briefly (10 minutes or less) and then stops, preventing the AC from running long enough to properly dehumidify your air.

Need a new AC soon?

Make sure you get a professional technician to perform a Manual J Heat Load Calculation on your home.  This calculation helps the technician find the AC size you need to properly cool and dehumidify your home.

Advanced Air has been serving Fort Myers and Naples, Florida, and the surrounding areas for over 25 years.