Perimenopause Night Sweats: Why They Happen and What Helps

You go to sleep comfortable and wake at 3 a.m. with your heart racing, the sheets damp and the duvet on the floor. Then you lie awake until dawn. If you have searched for perimenopause night sweats, you are describing one of the most common, and most disruptive, symptoms of the years before menopause. Here is what reputable health sources say about why they happen, what may help and when to talk to your doctor.

This article is for general information only and isn't medical advice. If you're worried about your symptoms, talk to your doctor.

The Short Answer

Night sweats are hot flashes that happen at night. The U.S. National Institute on Aging (NIA) describes them exactly that way, and notes that hot flashes are uncomfortable and can last for many years. They are linked to the hormonal changes of the menopausal transition. Lifestyle changes help many women, and effective treatments exist, so you do not have to simply endure them.

What Night Sweats Feel Like

The NHS describes hot flushes as a sudden feeling of heat, or cold, in the face, neck and chest, which can make you sweat a lot, cause palpitations or anxiety, or make you feel dizzy, and which can last for several minutes. When they happen during the night, they are night sweats. The NHS adds that sleep problems may be worse if you also have night sweats, which is why so many women feel exhausted the next day.

The NHS's general page on night sweats distinguishes them from ordinary warmth: night sweats are when you sweat so much that your night clothes and bedding are soaking wet, even though where you are sleeping is cool.

Why They Happen in Perimenopause

Perimenopause is the transition before menopause, which the NHS defines as the point when you have not had a period for 12 months. During this time, the ovaries work less effectively and hormone levels such as estrogen change, as NIA explains. The NHS notes that one of the first signs of perimenopause is usually a change to your periods, and that symptoms vary greatly from woman to woman; hot flushes and night sweats may come for a while and then improve or be replaced by other symptoms.

The NHS also notes that ethnic background can affect symptoms; for example, women from a Black ethnic background are more likely to have hot flushes that are severe and continue longer. If you are unsure whether this is perimenopause at all, read am I in perimenopause?

Other Causes to Keep in Mind

Not every night sweat is hormonal. The NHS lists the most common causes as menopause symptoms, anxiety, some medicines (including some antidepressants, steroids and painkillers), low blood sugar, alcohol or drug use, and hyperhidrosis, a harmless condition that causes excessive sweating. Sometimes the cause is unknown. This is why a conversation with your doctor matters, especially if anything about your night sweats feels unusual.

What May Help: Lifestyle First

NIA suggests trying lifestyle changes before considering medication. For hot flashes that keep you up at night, it recommends:

• A cooler bedroom. Lower the temperature and turn on a fan.
• Small amounts of cold water before bed.
• Layered bedding that you can adjust during the night.
• Layered clothing you can remove at the start of a hot flash.
• Fewer triggers. NIA advises avoiding alcohol, spicy foods and caffeine, which can make menopausal symptoms worse.
• Not smoking and maintaining a healthy weight; NIA notes that women who are overweight may have more frequent and severe hot flashes.
• Mind-body practices. Early research suggests hypnotherapy and mindfulness meditation could help.

NIA also suggests noting what triggers your hot flashes and how much they bother you. A simple diary is the most useful thing you can bring to an appointment. The holiday season, with late dinners, wine and warm rooms, is a good moment to watch for patterns.

Treatment Options to Discuss With Your Doctor

If night sweats are disrupting your sleep, work or relationships, there are proven treatments. According to NIA:

• Menopausal hormone therapy can be very effective for hot flashes and night sweats, but it also carries risks. It is a decision to make with your doctor.
• Nonhormonal prescription options exist. The FDA has approved paroxetine (Brisdelle), an SSRI, for hot flashes associated with menopause, and fezolinetant (Veozah) for moderate to severe hot flashes caused by menopause.
• Supplements are unproven. NIA says black cohosh, DHEA and soy isoflavones are not proven to be effective, and some carry risks such as liver damage.

The American College of Obstetricians and Gynecologists (ACOG) also has a clear overview of the menopause years and treatment choices to read before your visit.

When to See a Doctor

The NHS recommends seeing a GP if:

• You have night sweats regularly that wake you up or worry you.
• You also have a very high temperature, or feel hot, cold or shivery, a cough or diarrhea.
• You have night sweats and are losing weight for no reason.

The NHS menopause pages also encourage talking to a GP if you think you have symptoms of perimenopause and want to know your options, noting that early advice can help reduce the effects on your health, relationships and work.

Frequently Asked Questions

Are night sweats a sign of perimenopause?

They can be. The NHS lists hot flushes and night sweats among the symptoms of perimenopause and menopause, and NIA describes night sweats as hot flashes that happen at night. Other causes exist, so discuss them with your doctor.

How long do perimenopause night sweats last?

It varies. NIA notes that hot flashes can last for many years, with different patterns for different women, while the NHS says they may improve over time and be replaced by other symptoms.

Why do I get night sweats before my period?

Hormone levels change across the cycle, and in perimenopause those changes become less predictable. Tracking the timing alongside your cycle will help your doctor understand the pattern.

What is the fastest way to stop a night sweat?

In the moment, cool the room, use a fan, remove a layer of bedding and sip cold water, as NIA suggests. For lasting relief, talk to your doctor about treatment options.

Rest Is Not a Luxury

Good sleep is the foundation of everything else: patience, presence and the energy to say yes to the evenings that matter. If night sweats are keeping you awake, read our guide to perimenopause insomnia. For the inner work of confidence through every season of life, explore our Presence collection, and browse every edition on the guides page.

Health information checked against NIA, NHS and ACOG pages on October 26, 2026.