Trippon-Japan

An onsen (温泉) is a natural hot spring bath — and bathing in one is one of the defining experiences of visiting Japan. The water is geothermally heated, often mineral-rich, and genuinely good for your skin. But the etiquette rules exist for real reasons, and getting them right makes the difference between an awkward experience and a deeply relaxing one. This guide covers everything first-time visitors need to know.

1. The Step-by-Step Process

1. Pay and get your towel. Most onsen provide a small towel (modesty towel) and sometimes a larger bath towel for an additional fee, or included with your entry or ryokan stay. Remove your shoes at the entrance.
2. Go to the changing room. Men and women use separate changing areas and baths. Look for the kanji 男 (men) or 女 (women), or the colour code: blue/dark curtain for men, red/pink for women.
3. Undress completely. Swimsuits are not worn in a traditional onsen. You bathe completely nude. This is non-negotiable at traditional facilities. Leave everything, including jewellery, in the locker or basket provided.
4. Shower before entering the bath. This is the most important rule. Find an open washing station (a small stool, a bucket, a shower head, and soap/shampoo). Sit on the stool. Wash your entire body thoroughly with soap. Rinse completely before stepping near the bath water.
5. Enter the bath slowly. Hot spring water is genuinely hot — typically 40–43°C. Lower yourself in slowly. If you feel dizzy or overheated at any point, get out, sit at the edge, and drink water.
6. Manage your towel correctly. The small modesty towel must never go into the bath water. Fold it on your head Japanese-style, leave it at the bath edge, or carry it in your hand. Do not let it contact the water.
7. No swimming, splashing, or loud talking. The bath is for soaking and quiet relaxation. Keep movement minimal and conversation low.
8. No photos. Photography is strictly forbidden in all changing and bathing areas.
9. Rinse off and dry before returning to the changing room. Towel off at the bath area before re-entering the changing room so you do not drip water on the floor.

2. Tattoo Policies in 2026

Tattoos are legal in Japan, but many traditional onsen ban them. The restriction traces back to historical associations with organised crime (yakuza members often have full-body tattoos) and remains a cultural norm at traditional establishments even though the practical reason is largely outdated.

In 2026, the situation is genuinely mixed:

• Roughly half of traditional onsen still ban tattoos visibly displayed
• A growing number allow small tattoos covered with skin-tone waterproof cover stickers (available at pharmacies and onsen reception desks)
• Tattoo-friendly onsen explicitly welcoming tattooed guests are increasing — particularly at Hoshino Resorts properties, some Beppu onsen, Funaoka Onsen in Kyoto, and various private-bath (kashikiri) facilities
• Private baths (kashikiri) are rented by a group for exclusive use and are open to everyone regardless of tattoos

3. Types of Onsen to Know

Rotenburo (露天風呂) — outdoor bath

An outdoor bath, often with a view of a garden, mountain, or river. Rotenburo are considered the most desirable onsen experience. At many ryokan, they are available as private in-room baths or in the main outdoor area.

Kashikiri (貸切) — private rental bath

The entire bath area is rented exclusively to your group for a set time (typically 30–60 minutes). Ideal for couples, families, or tattooed visitors. Book in advance at your ryokan or directly with the facility.

Konyoku (混浴) — mixed-gender bathing

Genuinely mixed-gender baths exist but are rare and are always explicitly advertised as such. Most onsen have strictly separate men's and women's baths. If you see konyoku listed, it means mixed bathing is intentional — at most traditional facilities, baths are single-gender only.

4. Three Mistakes Most Tourists Make

• Skipping the pre-wash. Entering the bath without washing first is the most serious onsen etiquette violation. The washing station is not optional — it is the reason everyone can share the water.
• Putting the towel in the water. The small towel is a modesty item, not a washcloth in the bath. Keep it folded on your head or at the bath edge.
• Getting in drunk. Alcohol and hot spring bathing is genuinely dangerous. The combination of heat and alcohol causes dizziness and can lead to fainting. Most facilities post warnings. Avoid bathing immediately after drinking.

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