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Can you swim when you have your period?

|Updated on 11 October 2026| Bente Hagens |5 min reading time

tl;dr

You can swim just fine when you're on your period. Water pressure can make it seem like your period stops while you're in the water, but as soon as you get out, the bleeding simply continues. Regular period underwear isn't made for swimming. Period swimwear is: it has a thin protective gusset that catches blood, and it looks just like regular swimwear.
Myths such as swimming disrupting your cycle, causing infections or making cramps worse aren't true. Moving in the water can actually help relieve cramps. With period swimwear you can also swim without a tampon, which is especially nice for girls who have just started their period.

Swimming during your period can feel awkward or even nerve-wracking. But with the right preparation, there's no need to skip a dip. In this blog we discuss why you barely bleed in water, how period swimwear works and whether you can swim safely in period swim bottoms. We give practical answers to frequently asked questions and introduce a smart solution: period swimwear.

Period swimwear has developed a lot in recent years. Where a tampon used to be the main option for swimming, there are now bikinis, swimsuits and swim shorts with built-in protection. So you can choose swimwear that suits your body, your flow and your plans in the water.

why does your period stop in water?

Many people notice that they barely bleed while swimming or showering. That's because the water pressure temporarily holds back the bleeding. Water exerts counter-pressure on your body, which limits blood flowing out. But as soon as you get out of the water, that pressure disappears and the bleeding can simply continue.

So your period doesn't really stop in water. It only seems as if you lose less blood while you're in the water. That's why it's smart to think ahead about protection that's suitable for swimming, especially if you'll be on the beach, by the pool or walking around in your swimwear afterwards.

That's why it's important to wear reliable protection while swimming, such as period swimwear or a tampon. For those who prefer not to use a tampon, a period bikini or swimsuit is a comfortable alternative.

can I swim in period underwear?

Standard period underwear is designed for dry use and is not water-resistant. The absorbent layers also soak up pool water. This can make the underwear wet and heavy, so it loses its protective function. So you're not meant to swim in period underwear.

That's the key difference between period underwear and period swimwear. Period underwear is made for everyday moments, while period swimwear is specially designed for use in and around the water. The materials and the gusset are made for swimming, so the swimwear stays comfortable and looks like regular swimwear.

Period swimwear is specially developed for use in the water. It contains a discreet, waterproof and absorbent layer that catches blood but keeps water out. You can't see it, but it does offer protection on your light and medium days.

Period swimwear comes in different styles, such as swimsuits, bikini bottoms and matching bikini tops for girls. So you can choose what suits your style and what feels good to you, whether you prefer a high-waisted style, a classic bikini bottom or a swimsuit.

how does period swimwear work?

Period swimwear combines fashion with function. It looks like regular swimwear, such as a bikini or swim bottoms, but has several layers:

  1. An absorbent first layer that quickly lets blood through, absorbs it and holds it.
  2. A leak-resistant barrier to help prevent leaks.

The protective gusset is thin and discreetly built in, so from the outside nobody can tell you're wearing period swimwear. The swimwear is made to move with you while swimming, playing, sunbathing or relaxing by the pool.

The swim bottoms are designed to be comfortable, look like regular swimwear and give you full freedom of movement. So you can swim, sunbathe or exercise without worrying.

There are many stylish and reliable period swim bottoms and swimsuits that suit your cycle. Ideal for a holiday or simply when the weather is nice.

Period swimwear comes in two absorbencies: light-medium and medium-heavy. Light-medium is suitable for light to medium days, and medium-heavy gives more protection when you want a bit more certainty. So you can match the absorbency to your period day and to what you're planning to do.

Besides absorbency, you can also choose from different colours and styles. Think of calm basics like black, but also summery colours and prints for women and girls. That makes period swimwear not just practical, but simply part of your summer wardrobe.

is it true that you shouldn't swim on your period?

The idea that you shouldn't swim during your period is a myth. In reality you can and may swim just fine when you're on your period. It's even good for your body: swimming can relieve period cramps and help you relax.

What does matter is hygienic protection. Period swimwear or a tampon helps prevent leaks and keeps you feeling comfortable. With period swimwear, you have a lot less to worry about when it comes to stains or awkward situations.

which myths about swimming and periods aren't true?

There are still quite a few stories going around about swimming during your period. Three we hear a lot:

  • Swimming disrupts your cycle. Not true. Your cycle is regulated by your hormones, and swimming has no effect on that.
  • You're more likely to get an infection. Swimming during your period doesn't cause infections. If you use a tampon, don't leave it in too long, including when you go swimming.
  • Swimming makes your cramps worse. If anything, it's the other way around. When you move, your body produces endorphins. That can help relieve cramps and give your mood a little boost.

Every body is different, so above all listen to what feels right for you. Want to know more about exercising during your period? Then read more about sports and your period.

can you swim without a tampon on your period?

Yes, with period swimwear you can swim without a tampon. That's especially nice if you'd rather not insert anything, if you find tampons scary or uncomfortable, or if you've only just started your period. You put it on like regular swimwear, but with built-in protection in the gusset.

For girls, that can be extra reassuring. Getting your period is new enough as it is, and swimming during your period can feel quite nerve-wracking. A bikini bottom or swimsuit with built-in protection can help them simply join in with swimming lessons, holidays or a day at the pool.

carefree swimming during your period

Swimming during your period doesn't have to be stressful. With the right precautions and period swimwear from Moodies Undies, you have extra protection against leaks and can feel more confident in and around the water.

Whether you're on holiday, at swimming lessons or just want to enjoy a refreshing dip: with period swimwear, you no longer have to skip a swim.

tl;dr

You can swim just fine when you're on your period. Water pressure can make it seem like your period stops while you're in the water, but as soon as you get out, the bleeding simply continues. Regular period underwear isn't made for swimming. Period swimwear is: it has a thin protective gusset that catches blood, and it looks just like regular swimwear.
Myths such as swimming disrupting your cycle, causing infections or making cramps worse aren't true. Moving in the water can actually help relieve cramps. With period swimwear you can also swim without a tampon, which is especially nice for girls who have just started their period.

veel gestelde vragen over het blog 'Can you swim when you have your period?'

Can you swim when you're on your period?

Yes, with the right protection you can swim as usual.
• Wear period swimwear, or a tampon or cup.
• Choose the absorbency that suits your period day.
• Suffering from cramps? A gentle swim can actually help you relax.

Why does your period stop in the water?

Your period doesn't really stop, it just seems that way.
• Water pressure temporarily holds back the blood.
• As soon as you get out of the water, the bleeding simply continues.
• So wear protection when you're sitting by the pool or lying on the beach too.

Can you swim in regular period underwear?

No, regular period underwear isn't made for swimming.
• The absorbent layers also soak up pool water.
• The underwear then becomes wet and heavy and protects less well.
• Period swimwear is specially made for in and around the water.

Is swimming during your period bad for you?

No, that's a myth.
• Swimming has no effect on your cycle.
• It doesn't make you more likely to get an infection. If you use a tampon, don't leave it in too long.
• Moving in the water can actually help relieve cramps.

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