Onsen Etiquette Step by Step: Bathing the Japanese Way

A calm, step-by-step onsen guide for first-timers: what to bring, how to wash, towel rules, tattoo questions and how to enjoy Japan's hot spring baths.

Published October 18, 2026 at 3:12 AM JST | By Tokyo Paul

Quick answer: At a Japanese onsen, you undress completely, wash thoroughly at a seated shower station, then soak without soap, swimwear or a towel in the water. Tie up long hair, keep soaking time comfortable, and ask the facility about tattoos before you go.

Soaking in a steaming outdoor bath beneath tall trees, snow or autumn leaves is one of the great pleasures of a trip to Japan. If you are new to onsen (hot spring baths), the customs can look intimidating from the outside, yet they are really a short list of friendly, logical steps that keep the water clean and comfortable for everyone. This guide takes you from the changing room to the final soak, explains the towel rules, answers the common tattoo question, and shares gentle tips so your first onsen feels relaxing instead of stressful.

What Is an Onsen?

An onsen is a hot spring bath fed by naturally heated mineral water, and the word is also used for the resort towns and inns built around such springs. Japan has a long tradition of soaking. According to Wikipedia, records of onsen bathing go back at least 1,300 years, and Japan's Hot Springs Act sets the legal criteria for what can be called an onsen. Today you can find them in ryokan (traditional inns), hotels, day-use bathhouses and mountain villages, with both indoor baths and outdoor baths known as rotenburo.

The tradition has deep roots. Wikipedia explains that early visitors often sought healing through long stays called toji, that onsen had strong Buddhist ties for centuries, and that during the Edo period they became popular as places for cleanliness and socializing. That heritage helps explain why bathers today treat the baths with such care: they are shared spaces that many generations have enjoyed in the same spirit of calm and courtesy.

Onsen are different from sento, which are common neighborhood public bathhouses. Because onsen are part of local culture and community, the customs are shared widely, from big resort towns to tiny village baths. Knowing them in advance lets you enjoy the experience with confidence.

JNTO encourages visitors to try scenic outdoor onsen, and it names Kurokawa Onsen in Kumamoto Prefecture, Nyuto Onsenkyo in Akita Prefecture and Iya Onsen in Tokushima Prefecture as places with memorable views. Each region has its own character, from forested valleys to riverside baths, so choosing an onsen town can become the centerpiece of a trip. Wikipedia adds that mixed bathing is generally not allowed in public baths, although private family baths can be reserved for mixed use.

What Happens Before You Enter the Bath?

Start at the entrance by taking off your shoes and using the slippers provided. Find the changing room that matches your gender. The Japan National Tourism Organization (JNTO) notes that women's rooms are usually marked with a red curtain or sign and men's with blue, and it suggests checking the kanji labels, 女 (onna) for women and 男 (otoko) for men. Leave your clothes and belongings in the changing room, and store valuables in the lockers if they are provided. Guidance for visitors notes that some jewelry can discolor in mineral-rich water, so it is best left behind.

Most onsen require full nudity in the bathing area, and swimsuits are not allowed in traditional baths. That can feel unfamiliar, but baths are separated by gender, and everyone is there for the same quiet purpose. You may carry a small washcloth to cover yourself on the way to the baths. If you are shy, remember that people are focused on their own relaxation.

How Do You Wash and Handle Your Towel?

Washing comes first, always. Between the changing room and the bath you will find a washing area with showers or taps, small stools and buckets. Sit on a stool, scrub your whole body with soap, and rinse until no soap remains. JNTO makes it clear that you should shower before entering the bath, and that the onsen water is for soaking, never for washing.

Hair matters too. JNTO's etiquette guidance advises tying up long hair and keeping it out of the water, since hair is considered a contaminant. If you wear contact lenses or have long hair, bring a clip or a hair tie. Rinse off any lotion or makeup as well, so the water stays clean.

The small towel is your companion, but it does not go into the water. JNTO explains that you should pat yourself dry after washing, keep towels out of the onsen, and either set the towel at the edge of the bath or fold it and balance it on your head while you soak, as experienced bathers do. Do not leave it by the washing stations either, because other people will need the space.

Enter the bath slowly, because the water can be quite hot. Lower yourself gently and avoid splashing, swimming or loud conversation. Guidance for visitors suggests limiting your soak to about 30 minutes, and not eating or drinking in the bath. If you feel lightheaded, step out, sit by the side and cool down. Listening to your body is the best etiquette of all.

Can You Enter an Onsen With Tattoos?

This is the most common question, and the answer depends on the facility. JNTO says the majority of onsen prohibit tattooed guests, but it adds that policies vary and that some places are more relaxed. Wikipedia mentions a 2015 survey in which a little over half of operators banned bathers with tattoos, and that some towns are known for being friendlier. Visitors are often given more leniency, though it is wise to be prepared in case you are turned away.

Your best strategy is to ask before you go. JNTO suggests contacting the facility in advance, using tattoo cover seals where permitted, renting a private bath (kashikiri onsen), which usually costs extra and needs advance booking, or looking for tattoo-friendly baths. A private bath is a lovely alternative for families or couples who want a relaxed soak without worrying about rules. Always follow the posted signs and staff instructions.

What Should You Do After Your Soak?

When you finish, step out slowly and dry off in the changing area. Wikipedia notes that many bathers skip a final shower to keep the minerals on their skin, though facilities may have their own preferences, so follow local signs. Use the changing room to cool down, and take your time getting dressed. Many onsen have lounges, vending machines or tatami rest areas where you can relax.

Leave the space as you found it by wiping the area around your sink, returning stools and buckets, and tidying your belongings. As of autumn 2026, hours, prices and tattoo policies at individual baths can change, so check the facility's official site before you go.

Quick Takeaways

Remove shoes, enter the right changing room, undress completely, and wash thoroughly before you soak. Keep your towel out of the water, tie up long hair, and soak for a comfortable time. Ask ahead about tattoos, and consider a private bath if you want flexibility.

The etiquette is simple, and following it is a way of saying thank you to the people who keep these baths beautiful. Relax, breathe in the steam and let the water do its quiet work.

Frequently Asked Questions

Do you wear a swimsuit in a Japanese onsen?

No. Traditional onsen require bathing without clothing or swimwear, and baths are separated by gender. You may carry a small washcloth to cover yourself on the way, but it should stay out of the water.

Can I go to an onsen if I have tattoos?

It depends on the facility. The Japan National Tourism Organization says the majority of onsen prohibit tattooed guests, but policies vary. Ask in advance, consider tattoo cover seals, or book a private kashikiri bath, which is often more flexible.

What do I do with the towel at an onsen?

Keep the small towel out of the bath water. Set it on the edge or fold it on your head while you soak. Use it to pat yourself dry after washing, and do not leave it at the washing stations.