How to Sleep Better in Winter

To sleep better in winter, keep the same bed and wake times, get outside in daylight, and keep the bedroom dark and cool. The CDC’s NIOSH puts cool at about 65 to 68°F. Adults need at least 7 hours, per the CDC. If you often have trouble with sleep in winter, Mayo Clinic says to contact a health care provider.

Published October 25, 2026.

I live in the Pacific Northwest, where winter means gray days and dark by late afternoon. I have spent years reading sleep research. What stands out is how little winter sleep trouble comes down to willpower. Most of it is light and routine. The days shrink, the schedule drifts, and the screens stay on.

Why do I sleep more in winter

Light is the short answer. The National Institute of General Medical Sciences (NIGMS) says light and dark have the biggest influence on circadian rhythms, the body’s daily cycles. A cluster of brain cells called the suprachiasmatic nucleus controls melatonin based on how much light the eyes receive. In the evening it tells the brain to make more melatonin. That causes sleepiness. Winter cuts the daylight that clock depends on.

For some people the change goes further. The National Institute of Mental Health (NIMH) says symptoms of seasonal affective disorder (SAD) start in late fall or early winter. They last about 4 to 5 months a year. Oversleeping, called hypersomnia, is one listed symptom. NIMH also says people with winter-pattern SAD produce too much melatonin, which can increase sleepiness and lead to oversleeping.

Mayo Clinic says less sunlight may disrupt the body’s internal clock. It adds that the specific cause of SAD is unknown. Wanting an extra half hour on a dark morning is not a diagnosis. Feeling down for days at a time, without the motivation for things you usually enjoy, is the point where Mayo Clinic says to see a health care provider. Our post on vitamin D in winter covers a separate question, what low winter sun does to that nutrient.

How many hours of sleep do adults need

The CDC says the hours you need each day change as you age. For most working-age adults the floor is 7 hours.

Mayo Clinic says adults need at least seven hours. It suggests setting aside no more than eight hours for sleep. Most people don’t need more than eight hours in bed.

In winter the timing is harder than the total. The National Heart, Lung, and Blood Institute (NHLBI) says to go to bed and wake up at the same time every day. It says to keep weeknights and weekends within about an hour of each other. A dark Saturday morning is where that rule gets tested. The same rule applies when the clocks fall back. Our guide to adjusting to daylight saving time covers that first week.

Does light affect sleep

Yes, in both directions. Daylight helps set the body clock, and bright light at night works against it. NIGMS says light from electronic devices at night can confuse biological clocks. The CDC says to turn devices off at least 30 minutes before bedtime. NHLBI says to spend the hour before bed on quiet time, without bright light.

The other half is the daytime. The CDC’s NIOSH suggests 30 minutes or so outside in the sunlight during the day. NHLBI says to spend time outside every day when you can. In a Pacific Northwest winter I treat that as a scheduled thing. Left to chance, a gray week goes by without it.

NIOSH also says to make the bedroom very dark. Block any lights in the room, especially blue and white ones. Heavy curtains and a covered standby light are the easy first steps.

What temperature is best for sleeping in winter

The CDC’s NIOSH says to keep the room comfortably cool, about 65 to 68°F for most people, and to use covers. Mayo Clinic, NHLBI and the CDC’s own sleep page agree without giving a number. They all point to a cool bedroom, and Mayo Clinic and NHLBI add quiet and dark.

Winter is when heating works against that. A thermostat held at a daytime setting all night can leave the bedroom warmer than the range NIOSH gives. Turning it down at bedtime is the simple fix. NIOSH also says a warm bath 30 minutes to 2 hours before bedtime can help promote relaxation. That suits a cold evening and a cool bedroom.

Winter sleep tips

The agencies agree on a short list. This is how it plays out in the dark months:

• Protect the wake time. NHLBI says to go to bed and wake up at the same time every day. Dark mornings make that hard, so it is the first habit to guard.
• Get outside in daylight. NIOSH puts it at 30 minutes or so. Short winter days mean you have to plan it.
• Watch the caffeine. NHLBI says the effects of caffeine can last up to 8 hours. An afternoon coffee can still be working at bedtime.
• Go easy on alcohol. Mayo Clinic says alcohol might make you feel sleepy at first but can disrupt sleep later in the night.
• Keep dinner light. NHLBI says to avoid heavy or large meals within a few hours of bedtime.
• Keep naps short. NHLBI says adults should nap for no more than 20 minutes. Mayo Clinic says no more than one hour, and not late in the day.
• Don’t lie there awake. Mayo Clinic says that if you don’t fall asleep within about 20 minutes, leave the bedroom and do something relaxing. Go back when you feel tired.

In bed and still awake? One quiet thing to do once you are up is a body scan meditation, which you can do sitting in a chair.

When to see a doctor about sleep problems

Mayo Clinic says nearly everyone has an occasional sleepless night. It says to contact your health care provider if you often have trouble sleeping. The CDC says providers can run tests, including sleep studies, to check for a sleep disorder.

For the seasonal pattern, NIMH says to talk to a health care provider about the potential benefits and risks of different treatment options. Mayo Clinic says that matters more if your sleep or appetite has changed or if you use alcohol to cope. Notes on when you go to bed, when you wake and how your mood has been give a provider something to work from.

Frequently asked questions about sleep in winter

Is it normal to sleep more in winter?

NIMH lists oversleeping, called hypersomnia, as a symptom of winter-pattern seasonal affective disorder. That condition is a type of depression that starts in late fall or early winter. If you are sleeping much more than usual and your mood stays low for days, talk to a health care provider.

Do you need more sleep in winter?

The CDC lists adult sleep needs by age, not by season. That is 7 or more hours for ages 18 to 60, 7 to 9 for ages 61 to 64, and 7 to 8 for ages 65 and older. Mayo Clinic says most people don’t need more than eight hours in bed.

Is it better to sleep in a cool room in winter?

Yes. The CDC’s NIOSH says to keep the bedroom comfortably cool, about 65 to 68°F for most people, and to use covers. Mayo Clinic, NHLBI and the CDC also advise a cool bedroom.

Can electronic devices affect sleep?

Yes. NIGMS says light from electronic devices at night can confuse biological clocks. The CDC says to turn devices off at least 30 minutes before bedtime. Mayo Clinic says to avoid prolonged use of light-emitting screens just before bedtime.

This article is for general information only and is not medical advice. Talk to a licensed clinician about your own situation.