Night sweats and sleep disruption are among the most exhausting parts of perimenopause, and the most undertreated. Sleep fragmentation compounds every other symptom: mood, focus, patience, and physical recovery all suffer when rest is broken.
The temperature connection
Hot flushes and night sweats are thermoregulation glitches. Your hypothalamus, the body's thermostat, becomes more sensitive to small temperature shifts when estrogen is low. A bedroom that felt fine a year ago can now trigger a full-body flush at 3am.
Practical adjustments
Keep your bedroom cool. Around 18 degrees C (65 F) is a good target. Layer breathable cotton or linen bedding so you can shed a layer without fully waking. Avoid a heavy meal within three hours of bed. Some women find keeping a chilled water bottle and a spare sleep shirt bedside lets them recover without switching on the light.
If night sweats happen several times a week, this is a medical issue worth treating, not a character failing. NICE's guideline NG23 and the Pakistan Menopause Society's 2026 recommendations both list HRT (hormone medicine) as a first-line option for hot flushes and night sweats. Whether it applies to you is your doctor's call, and the question is worth asking. NICE's guideline also names cognitive behavioural therapy, CBT-I when it is aimed at sleep, for the sleep problems that come with menopause: a route without medicine that you can ask to be referred for. You do not have to white-knuckle through years of broken sleep.