Japan Onsen Etiquette for First-Timers

JNTO’s current onsen guidance is clear on the most important hygiene step: wash your body thoroughly before entering the shared bath. Washing stations are normally inside the bathing area and typically have a stool, bucket or hand shower, plus soap and shampoo. Sit down, wash, and rinse away all soap before moving to the bath. Many onsen also provide a basin near the bath for kakeyu, pouring hot water over the body before entering. The practical rule is simple: the bath is for soaking, not washing, so arrive at the water already clean.

Most public onsen are enjoyed without clothing or swimwear, with clothes left in the changing area. A small towel can be used for washing or for modesty while walking between the changing area and bath, but it should not be placed in the bath water. JNTO suggests folding it and putting it on your head or leaving it at the side of the bath. There are exceptions, including some mixed-gender facilities that provide or require special bathing wear, so follow the venue’s own signs when they differ from the usual public-bath setup.

Long hair should be tied up or wrapped so it does not trail into the bath, and your head should not be submerged. Onsen are quiet shared spaces rather than swimming pools, so avoid splashing and keep conversation soft. Phones and cameras should stay outside the bathing area; JNTO explicitly warns against bringing them in because of privacy concerns. These habits are less about performing tradition perfectly and more about protecting the cleanliness, comfort and privacy of everyone using the same space.

Tattoo rules are not universal. JNTO notes that some traditional onsen still restrict tattooed guests, while more facilities are becoming tattoo-friendly. Some baths may accept small tattoos if they are covered with an approved patch, and private baths can be an alternative when communal-bath access is uncertain. Because the answer depends on the individual facility, check its website or contact it before visiting rather than assuming that a policy from another onsen will apply. This is especially important when the bath is a main reason for choosing a particular inn or town.

Most onsen changing rooms and baths are separated by gender, and public bathing is normally done nude. If that makes the experience uncomfortable, you do not need to force yourself into a communal bath. JNTO recommends looking for a private charter bath, often called a kashikiriburo, or a ryokan room with its own open-air bath. These options can also be useful for families or travelers concerned about tattoos. For a first visit, choosing a setup you are comfortable with is more useful than worrying about whether you are following every minor custom perfectly.