How does winter affect our sleep?

How does winter affect our Sleep?

Katherine Hurst MD

February often feels heavy. The days are short, energy can dip, and mornings may feel harder than they should. This is the brain and the body’s response to winter.

In winter, reduced daylight and cold weather changes how the brain regulates sleep, mood, and energy. The goal this month is to give your nervous system clearer, kinder signals.

Light Awake can provide consistent early morning light

Start with morning light

Gentle light exposure within 30 minutes of waking helps the brain transition out of sleep. The brain is designed to respond to light to end sleep. Light supports natural alertness by lowering melatonin. Consistency matters more than intensity, so each day after waking up expose yourself to light.

Avoid sleeping too much

It is very tempting to sleep more in dark cold winter mornings. The dark morning reduces melatonin and increases cortisol. The cold weather makes the body want to conserve energy and stay in warm blankets. However,try to keep your wake time within an hour each day. Even small shifts can disrupt sleep quality and mood in winter. Regular sleep and wake routines help the body feel stable.

Hydrate before stimulation

Cold weather blunts thirst, but dehydration can worsen fatigue and headaches. A glass of water before caffeine can improve how you feel in the morning and throughout the day.

Choose gentle movement

Energy may be lower in February. Walking, stretching, or slow strength work with your physiology rather than against it. Movement earlier in the day also supports sleep later.

Soften evenings

Long nights often mean more screen time. Lower lights and screen brightness after sunset to support natural melatonin release. Better nights make mornings easier.

February doesn’t ask for intensity.

It asks for steadiness.

This month, think of wellness as providing the right inputs—light, timing, hydration, and rest—so your body can do what it already knows how to do.