Onsen Etiquette for First-Timers: The Simple Rules
A Japanese onsen (hot spring bath) is one of the most relaxing things you’ll do in Japan — once you know the handful of rules. They’re simpler than they look, and locals are forgiving of polite first-timers. Here’s everything, step by step.
The one rule that matters most
Wash thoroughly before you get in. The bath is for soaking in clean water, not for cleaning yourself. Every onsen has shower stations with stools, soap, and shampoo — sit, rinse off completely, then enter the bath. Get this right and you’re 90% of the way there.
Step by step: your first onsen
- Pay and find the changing room — split by gender (red = women 女, blue = men 男).
- Undress completely in the changing room. Onsen are enjoyed nude — swimsuits aren’t allowed.
- Take only your small towel to the washing area.
- Wash at a shower station, seated, until fully rinsed.
- Enter the bath slowly. Keep your small towel out of the water — most people rest it on their head or the side.
- Soak and relax. When done, dry off with the towel before returning to the changing room.
Do: tie up long hair, drink water after, go slowly. Don’t: put your towel in the water, swim, take photos, or use soap inside the bath.
Tattoos: what’s the real situation?
Some traditional onsen still restrict tattoos, a rule rooted in old associations. In 2026 this is easing, especially in tourist areas. Your options:
- Look for “tattoo-friendly” onsen — there are more every year.
- Cover a small tattoo with a waterproof patch.
- Book a private bath (kashikiri) or a room with a private onsen — no rules to worry about.
Onsen vs sentō: what’s the difference?
| Onsen | Sentō | |
|---|---|---|
| Water | Natural hot spring | Heated tap water |
| Vibe | Often scenic / resort | Local neighborhood bath |
| Etiquette | Identical — wash first, no swimsuits | |
Where to try one on a first trip
Hakone is the easiest onsen town to reach from Tokyo and pairs perfectly with a day trip — we include it in our 5-day Tokyo itinerary. Getting there is simple with a Suica card, and if you’re weighing rail options first, read our JR Pass guide.
Frequently asked questions
Do I really have to be fully nude?
Yes — swimsuits aren’t permitted in traditional onsen. Baths are gender-separated, and the small towel offers modesty while you move around.
Can I wear my glasses in?
Yes, glasses are fine. Just keep your towel and anything else out of the water.
Is it okay if I’m shy?
Completely normal for first-timers. A private (kashikiri) bath lets you enjoy an onsen with total privacy.
How long should I soak?
10–15 minutes at a time is plenty. Step out to cool down if you feel lightheaded, and drink water afterward.
