# Hot flashes at night during menopause · Midlife Nights > Source: https://midlifenights.com/topics/hot-flashes-at-night ## Hot flashes at night Why the heat arrives once the lights are off, how long one episode lasts, and what the health services suggest trying first. 1 article in this topic * [All topics](/topics) * [Every article](/articles) [ ](/articles/black-cohosh) #### [Black cohosh for hot flashes: the evidence ](/articles/black-cohosh) What the trials found on black cohosh for hot flashes and night sweats, why the reviews disagree, and the rare liver cases behind the safety warning. 2 Nov 2026 What the sources say ### Hot flashes at night, in plain terms A hot flash is a sudden rush of heat to the face, neck and chest. [ACOG](https://www.acog.org/womens-health/faqs/the-menopause-years) describes one lasting from a few seconds to several minutes, and some women have them a few times a month while others have several a day. When one comes after dark, the same event is usually called a night sweat, and it can leave you tired and slow the next day. The [NHS](https://www.nhs.uk/conditions/menopause-and-perimenopause/symptoms/) adds what many women notice first: the heat can bring sweating, a racing heart, anxiety or dizziness, and it can feel very hot or suddenly cold. Its symptom page puts the usual span of menopause symptoms at 7 to 9 years, sometimes longer, with the flushes often easing while other symptoms take their place. The order of events is less obvious than it looks. The [National Institute on Aging](https://www.nia.nih.gov/health/menopause/sleep-problems-and-menopause-what-can-i-do) notes research suggesting that waking from sleep may itself trigger the heat, rather than the heat always waking you. That matters when you try to work out what is breaking your night. For the bedroom, [NIA's page on the subject](https://www.nia.nih.gov/health/menopause/hot-flashes-what-can-i-do) starts with the room: a lower temperature, a few sips of cold water before bed, bedding in layers you can push off, and a fan. It also lists alcohol, spicy food and caffeine as things that can make symptoms worse. Treatment is a conversation for your doctor, and the same page sets out the options to ask about. Herbal remedies come up often too: our look at [what the studies found on black cohosh for hot flashes](/articles/black-cohosh) sets out the trials and the liver warning, without telling you what to take. The articles below take one question each: why the heat feels worse in bed, what a perimenopause episode is like, and what to try before sleep. ### Questions readers ask How long does one episode last? ACOG gives a range from a few seconds to several minutes. The NHS says several minutes is common. Are night sweats the same as hot flashes? Mostly. NIA uses the term night sweats for a flush that comes while you sleep. Heavy sweating with fever or weight loss is different and needs a GP. Does the heat wake me, or does waking bring on the heat? Both can happen. NIA points to research suggesting that waking may itself set off a flush. Related reading ### The other sides of a hard night [ Night sweats Waking soaked: what counts, the signs that point away from menopause, what helps at night and when to see a doctor. ](/topics/night-sweats) [ Insomnia and 3am waking Trouble falling asleep, waking at 4am with no way back to sleep, and the habits the National Institute on Aging suggests. ](/topics/insomnia-and-3am-waking) [ A cooler bedroom Room temperature, layered bedding, a fan, what to wear to bed and the evening habits that make hot nights easier. ](/topics/a-cooler-bedroom) [ Tracking and your doctor Keeping a simple record of your nights and bringing it to your next appointment, so the conversation starts from facts. ](/topics/tracking-and-your-doctor) --- [ ](/) The night side of perimenopause and menopause: hot flashes, night sweats and 3am waking, with every health fact linked to its source. [Send us a correction or a question we should answer](/contact) ### Read * [All articles](/articles) * [Hot flashes at night](/topics/hot-flashes-at-night) * [Night sweats](/topics/night-sweats) * [Insomnia and 3am waking](/topics/insomnia-and-3am-waking) * [A cooler bedroom](/topics/a-cooler-bedroom) * [Tracking and your doctor](/topics/tracking-and-your-doctor) * [All topics](/topics) ### About us * [About](/about) * [Authors](/authors) * [Editorial policy](/editorial-policy) * [How we make money](/how-we-make-money) ### Legal * [Terms](/terms) * [Privacy](/privacy) * [Contact](/contact) © 2026 Midlife Nights. General information from the sources each page links, not advice for your own health. Talk to your doctor about yours. No paid placements and no affiliate links. [How we make money](/how-we-make-money)