Waking up at night to urinate (nocturia) in men

Published 22 October 2026

Getting up at night to pass urine, called nocturia, is common, but it is not always just a matter of age. It usually comes down to making too much urine at night, a bladder that holds less than it should, or sleep disturbed for another reason. This guide explains each one, how a three-day bladder diary tells them apart, what helps, and when to get checked.

Why do I wake up at night to pee?

Usually because your body makes too much urine overnight, your bladder holds less than it should, or something else wakes you and you go because you are awake. Waking from sleep to pass urine is called nocturia; often more than one cause is involved, and each has a different fix.

Normally, urine production falls at night: antidiuretic hormone (ADH), released by the pituitary gland, tells the kidneys to make less urine while you sleep. Many men blame their prostate, sometimes rightly, but the cause needs measuring before it is treated.

How many times is it normal to pee at night?

There is no single number for everyone. The Bladder & Bowel Community describes waking once or twice a night to pass urine as quite normal. The British Association of Urological Surgeons (BAUS) is stricter for men with urinary symptoms: more than six to eight visits to the toilet in 24 hours, with more than one at night, is considered abnormal. The International Continence Society counts only trips made after you have fallen asleep and before you intend to get up, and recognises that getting up once may not bother you at all.

The count matters less than whether it bothers you, whether it has come on quickly and recently, and whether anything else is going on — see the warning signs below.

Are you making too much urine at night (nocturnal polyuria)?

Nocturnal polyuria means producing too much urine overnight. BAUS explains that when you are young, less than a fifth of your 24-hour urine is made at night; as you get older, it should still be less than a third. More than a third is how BAUS defines nocturnal polyuria. The bladder may be normal — it is simply filling faster than it should.

• Evening drinks. Plenty of fluid in the evening, and caffeine or alcohol with or after dinner, increase night-time urine.
• Water-rich evening food. BAUS points out that fruit, vegetables, salads, pasta and rice contain a lot of water.
• Less ADH with age, so the bladder keeps filling at close to its daytime rate.
• Fluid stored in the legs. Ankles that are puffy in the evening but normal by morning are a clue. Lying down lets that fluid return to the bloodstream, the kidneys turn it into urine, and the bladder fills overnight.
• Water tablets (diuretics), particularly when taken later in the day.
• Obstructive sleep apnoea, where breathing repeatedly stops and starts during sleep.
• Heart, kidney and other conditions. The International Continence Society lists heart failure, diabetes and swollen legs among the causes to consider, along with chronic kidney disease, liver failure and some neurological conditions, such as Parkinson’s disease.

Sometimes the night-time problem is part of making too much urine around the clock, which the International Continence Society defines as more than 40 ml per kilogram of body weight a day — about 2.8 litres for a 70 kg adult. That can simply mean drinking a great deal, but MedlinePlus, the US National Library of Medicine’s health service, also links diabetes, diabetes insipidus and high blood calcium to night-time urination.

Is your bladder holding less? Enlarged prostate and overactive bladder

Here the bladder signals that it needs emptying before it has collected a normal amount. BAUS describes a healthy bladder as holding 300 to 500 ml before you feel the urge. Repeatedly getting up to pass much less points to the bladder or its outlet rather than the kidneys.

• Enlarged prostate (BPH). The prostate commonly enlarges with age, most typically after 50, and can partially block the urethra; the NHS lists getting up during the night to pass urine among its symptoms. It can also leave the bladder incompletely emptied.
• Overactive bladder, which brings urgency and frequency by day as well. BAUS notes that going “just in case” can train the bladder to hold smaller volumes.
• Infection, typically with burning, urgency and frequency.
• Ageing. The Bladder & Bowel Community notes that the bladder loses some of its elasticity.

If the main driver is nocturnal polyuria, treating the prostate alone may not stop you getting up. Causes can combine, and a diary shows which is doing more of the work.

Are you waking up for another reason?

Sometimes noise, pain, worry or insomnia wakes you first, and you go because you are up. BAUS lists poor sleep patterns among the reasons for getting up at night, and MedlinePlus notes that stress and restlessness can wake you too. If something else usually wakes you first, mention it to your doctor: the International Continence Society notes that the reason for waking can be hard to pin down.

Sleep apnoea sits in both camps. The NHS lists its main signs as breathing that stops and starts, gasping or choking noises, loud snoring, waking up a lot and daytime tiredness. If that sounds familiar, see your GP; if it is confirmed, you may need to tell the DVLA.

How do the causes of nocturia compare?

Each cause leaves a different pattern in a bladder diary, and more than one often applies. Use this as a guide for the conversation with your doctor, not for self-diagnosis.

Scroll the table sideways to see every column

How do you keep a 3-day bladder diary?

A bladder diary, or frequency-volume chart, is the key first test for nocturia, and you do it at home. The NHS says doctors usually ask for at least three days’ record of what you drink and how often you pass urine and how much; the International Continence Society calls it a mandatory first-line investigation.

1. Choose three typical days.
2. Keep a measuring jug and a chart by the toilet; BAUS stresses measuring accurately.
3. Record every drink: time, amount and type.
4. Record every time you pass urine, day and night: the time and the volume in millilitres, plus any strong urge or leak.
5. Note when you go to bed and when you get up, and empty your bladder just before sleep. The International Continence Society recommends this because it makes night-time volumes easier to read.
6. Note why you woke: the need to go, or something else.
7. Measure the first urine you pass after getting up. Its volume counts towards the night, although it is not counted as a night-time trip.
8. Weigh yourself daily at the same time on the same scale, as MedlinePlus suggests.

Bring the diary and a list of your medicines to your first urology appointment.

What can a bladder diary show?

• The night-time share. Add every volume passed after falling asleep, including the first urine passed after getting up, and divide by the 24-hour total. More than a third fits the BAUS definition of nocturnal polyuria (the International Continence Society uses more than a fifth for younger people).
• The 24-hour total. Over 40 ml per kilogram of body weight suggests too much urine around the clock.
• The size of each void. Frequent small amounts, day and night, point to reduced bladder capacity.
• Night total against your largest void. This is the International Continence Society’s nocturia index. Above 1, you make more urine overnight than you empty in one go; above 1.5 points to nocturnal polyuria.

These are guides, not verdicts: the Society notes that the one-fifth and one-third figures are not well validated. A doctor reads the diary alongside your history, an examination and urine and blood tests.

What can you do to wake less often?

BAUS says simple measures such as reducing evening fluids will often improve nocturnal polyuria. From BAUS and NHS advice:

• Drink earlier, not less. Cut down before bed but keep to 1.5 to 2 litres a day, as BAUS recommends; the NHS advises against cutting fluids too much. Take only sips if you wake thirsty.
• Reduce caffeine and alcohol, especially in the evening. BAUS suggests cutting caffeine gradually, over a fortnight or so, to avoid withdrawal symptoms.
• Eat water-rich foods earlier in the day.
• Put your feet up during the day, especially in the evening, if your ankles swell, and walk more.
• Empty properly before bed: wait a few seconds, then try again, without straining.
• Avoid constipation, which BAUS notes can make urinary symptoms worse.
• Ask your prescriber about medicine timing rather than changing it yourself.

For urgency, BAUS describes bladder training and pelvic floor exercises.

When should you see a doctor about peeing at night?

See your GP or a urologist if waking to pass urine continues over several days, bothers you, or has come on quickly, and your GP if both ankles stay swollen after a few days of self-care.

Get help the same day for:

• Being unable to pass urine despite a full, painful bladder — NHS 111, your GP or an emergency department straight away.
• Blood in your urine, even once — an urgent GP appointment or NHS 111; see blood in urine.
• Fever with shivering, side or back pain, or pain on passing urine, which can signal an infection: NHS 111, your GP or an emergency department the same day. Call 999 or go to A&E if you are also confused, drowsy or have difficulty speaking.
• Constant thirst and passing much more urine than usual, which are main symptoms of diabetes — the NHS advises an urgent GP appointment or NHS 111.
• Unexplained swelling in one leg — an urgent GP appointment or NHS 111.

Call 999 if swollen legs come with breathlessness, chest pain or tightness, coughing up blood, palpitations, or feeling faint or confused. New bedwetting as an adult also needs prompt checking, as the International Continence Society lists high-pressure urinary retention, a bladder that is not emptying and is under strain, among its possible causes. Book a GP appointment soon, or get same-day help as above if you also cannot pass urine.

How is nocturia treated?

Treatment follows the cause, which is why the diary comes first.

Too much urine at night

Self-help comes first. If it has not worked and other causes have been treated or excluded, BAUS describes two options a doctor may consider: a diuretic timed several hours before bed, so excess fluid is cleared in the evening, or synthetic ADH, as a tablet taken before bed, to reduce night-time urine. BAUS advises caution with synthetic ADH: it can cause water retention, strain the heart in people with heart problems or high blood pressure, and occasionally cause dangerously low blood sodium, with problems much more likely from 65 onwards. Ask your doctor which side effects to watch for. Heart failure, sleep apnoea or diabetes need treating in their own right.

Bladder holding less

For an enlarged prostate, the NHS says lifestyle changes usually come first when symptoms are mild, then medicines, and surgery if medicines do not help. Our problems passing urine page sets out the options, from medication to surgery; see also prostate conditions. An overactive bladder may need medicines for urgency alongside bladder training. An infection in a man needs treating and investigating; see recurrent urinary tract infections.

Something else waking you

Treat the sleep problem: MedlinePlus notes that nocturia may go away once a sleep disorder is under control.

Where can you see a specialist about night-time urination in London?

We assess night-time urination as part of our general urology service at HCA at The Shard, HCA at Canary Wharf and HCA at Guy’s Hospital. Our specialists all practise at Guy’s & St Thomas’, named by Newsweek in 2025 as the number one urology service in Europe. Self-funding patients need no GP referral; insured patients usually need one, plus pre-authorisation from their insurer (see fees and insurance). Call +44 7889 318584 (lines open Monday to Friday, 8am to 4pm) or use our contact page — and if you can, start your diary before you come.

Frequently asked questions

References and further reading