Sauna Culture in Japan: Facilities, Etiquette and Cooling Down

Learn where saunas are found in Japan, how the hot room and cold plunge fit together, and which bathing manners to follow.

Published October 20, 2026 at 1:07 PM JST | By Tokyo Paul

Quick answer: In Japan, saunas are most often found inside public bathhouses (sento), sports centers and larger bathing facilities. A visit usually follows the same bathing rules as an onsen: wash first, keep the towel out of the water, and respect gender-separated areas. Many modern bathhouses pair a hot room with a cold bath, and tattoo policies vary by facility.

Where saunas are found

In Japan, saunas are commonly part of a larger bathing facility rather than a stand-alone building. Published descriptions say that many are located in sports centers and in public bathhouses, called sento. After the Second World War, public baths were everywhere, and as more homes gained their own bathrooms, many sento added saunas and other features to stay attractive to visitors.

The result is a wide range of places, from small neighborhood baths with a single hot room to larger complexes with several pools. If you are looking for a sauna, the sento is a good place to start, because the sauna there is part of a familiar routine of washing, soaking and resting. Check the facility's own information (many have an English page or a printed guide at the entrance) for what is on offer, since each place sets its own services, and expect the character of each one to differ a little depending on the neighborhood and the age of the building.

The sento and its sauna

A sento is a public bathhouse that a local community uses for everyday bathing. Traditional ones are easy to recognize by a noren curtain at the entrance, often marked with the character for hot water or its hiragana form, and by separate changing rooms for men and women. Inside, the bathing area has washing stations and one or more tubs.

Many modern sento include a sauna and a cold bath. The sauna sometimes costs extra, and visitors may receive a wristband as proof of payment. Some sento have a large mural on the wall, often of Mount Fuji, and a tall chimney outside. Because each bathhouse sets its own fees and hours, check the posted information or the facility's website before you go.

Hot room, cold bath and cooling down

The core of any sauna visit is the contrast between heat and cooling. Cooling off is a standard part of the sauna routine, and many bathhouses make it easy to do. In many Japanese bathhouses, the cooling step is a cold-water bath, which published descriptions put at around 17 degrees Celsius, along with showers and a place to sit and rest.

Visitors typically move between the hot room, the cold water and a resting spot at their own pace. Facilities often post notices with suggested times and rules, so read them on arrival. This guide does not offer health advice, and anyone with a health concern should ask a doctor first. Listen to your own comfort, take breaks when you want to, and leave the room if it feels like too much. A calm, unhurried pace suits the atmosphere of a bathhouse, where quiet is part of the appeal.

Bathing manners to follow

The manners are the same ones that apply at an onsen (hot spring) and a sento. Undress completely in the changing area, since clothing, including swimwear, stays there. Wash thoroughly at the washing stations before entering any bath, using the stool and bucket provided, and pour hot water over your body first. Tie up long hair and keep it out of the water.

Speak softly, avoid splashing and swimming, and do not take phones or cameras into the bathing area. The small towel can be used to cover yourself on the way to the bath, but it should stay out of the water. Fold it and set it on your head or on the edge. Many people bring a second towel for drying off. These small steps keep the shared space calm, quiet and clean for everyone, and they are the same steps that a regular local visitor follows. If you are unsure, watching what others do and reading the posters in the changing room is a good way to learn the routine.

Towels, supplies and what to bring

At a sento, the minimum equipment is a small towel and something to wash with, such as soap or shampoo. Many facilities sell or rent these at the front desk, and published descriptions say that small items of this kind are inexpensive, though prices vary by place and date. A nylon scrubbing cloth or brush is also common.

Before you go, it helps to bring coins or a way to pay at the front desk, a bag for wet items, and a change of clothes. A locker is usually provided for belongings. Some facilities use wristbands or key tags, so keep yours safe. Because services differ from place to place, read the signs at reception to see what is included in the entry fee and what costs extra.

Tattoo policies

Tattoo policies differ from one facility to the next. Some bathhouses do not admit people with tattoos, while others allow small tattoos or ask guests to cover them. National tourism guidance says that policy is changing, with more facilities now accepting guests with tattoos than before, and that small cover stickers can be an option for very small designs.

The simplest approach is to check in advance. Look at the facility's website or ask at the front desk. If you prefer privacy, many hot spring inns offer private baths that can be reserved, called kashikiriburo. Reference works note that publicly owned baths are expected to admit all residents, but rules differ, so it is best to confirm the specific policy where you plan to go.

Practical tips and common questions

Plan your visit when you are not in a hurry, so the routine feels unhurried: wash, soak, use the sauna, cool down, and rest. Avoid drinking alcohol before bathing, and follow signs about how long to stay. Drinking cool water when you feel hot is a common suggestion from national tourism guidance for bathing.

Most baths and changing rooms are gender-specific, and reference works note that Japanese saunas are almost always separated by gender, with nudity a customary part of the etiquette. Some facilities offer mixed or swimsuit areas, so look at the signs. This guide shares general cultural information, not professional advice; for health questions, talk with a doctor.

Frequently Asked Questions

Are saunas in Japan mixed gender?

Most saunas in public bathhouses and similar facilities are separated by gender, and nudity is customary in the bathing areas. Some facilities have mixed or swimsuit areas, which are clearly marked. Check signs at the entrance or ask the staff, because each facility sets its own rules.

Can I go to a sauna in Japan with tattoos?

It depends on the facility. Some places do not allow tattoos, while others allow small ones or ask visitors to cover them. National tourism guidance says that acceptance is growing. Check the policy in advance, or look for a private bath that you can reserve.

Do I need to bring my own towel?

A small towel and something to wash with are the minimum. Many bathhouses sell or rent them at the front desk, but arrangements vary, so check ahead. Bringing a second towel for drying is common. Keep the small towel out of the bathwater.

Want to go deeper? Tokyo Paul's book Onsen Towns is available on Amazon.

Keep Exploring

More guides from Tokyo Paul: Kashikiri Private Baths: Booking an Onsen for Yourself or Your Family, Hike and Onsen: Planning a Trail Day That Ends in a Hot Spring and Shinrin-Yoku: Forest Bathing in Japan.