How to Use a Japanese Sauna: Step-by-Step
You've booked a hotel with a sauna in Japan. Now what? This step-by-step guide walks you through an actual session, in order, so you know exactly what to do from the moment you leave your room.
Step 1: What to Bring
From your room, you typically need almost nothing. The hotel provides:
- A large bath towel and a small hand towel (bring both — the small one goes into the sauna with you).
- A yukata (cotton robe) and geta sandals for walking to the bath. Wear these over your underwear or bare skin.
Leave valuables in your room safe. You'll lock everything else in a locker at the bath entrance.
Step 2: Enter and Undress
The bathing area is separated by gender (men's side is usually marked with a blue noren curtain, women's with red). Inside the changing room, undress completely and place your clothes in a locker. Take only your small towel with you. Swimsuits are not allowed.
Step 3: Wash First (Non-Negotiable)
Before touching any bath or sauna, sit at a shower station and wash your entire body with soap. Rinse thoroughly. This is the most important rule in Japanese bathing culture — the baths and sauna are for soaking and sweating, not cleaning.
Step 4: Warm Up (Optional)
Many people soak in the hot bath for 3–5 minutes before the sauna to warm the body. This is optional but makes the first sauna session more comfortable.
Step 5: The Sauna
Wring out your small towel and take it in. Sit on the towel or a provided mat — never directly on the bench. A typical session is 8–12 minutes. Most rooms have a 12-minute sand timer. Stay quiet, breathe slowly, and leave when your body says so.
Step 6: Rinse, Then Cold Plunge
Exit the sauna and rinse your sweat off at a shower station (a quick rinse, not a full wash). Then enter the cold water bath (mizuburo) slowly. Stay 30 seconds to 2 minutes. The shock is intense at first — focus on slow breathing and it passes quickly.
Step 7: Rest and "Totonou"
Sit in a resting chair, close your eyes, and just breathe for 5–10 minutes. This is where "totonou" (ととのう) happens — the deep, floating relaxation that is the whole point of the cycle. Don't skip this step.
Step 8: Repeat
The classic routine is 2–3 cycles of sauna → cold → rest. Hydrate between rounds. When you're done, do a final rinse (no soap needed) and dry off with your large towel before returning to the changing room.
Quick Reference
- Undress, locker, small towel only.
- Wash body completely.
- Sauna 8–12 min.
- Rinse sweat.
- Cold bath 30 sec–2 min.
- Rest 5–10 min.
- Repeat 2–3 times. Hydrate.
Nervous about the cold plunge? Enter slowly, breathe out long and steady, and remember you can leave after 30 seconds. The shock fades within about 20 seconds — and it gets easier every round.
Frequently Asked Questions
Do I need to bring anything from my room?
Just your towels (large and small) and your yukata for the walk. Everything else — soap, shampoo, lockers — is provided. Leave valuables in your room safe.
How do I know which side is which?
The bathing area is gender-separated. The men's side is usually marked with a blue noren curtain (のれん), the women's with red. Look for 男 (men) and 女 (women) characters.
Is the cold plunge mandatory?
No — skip it if you're uncomfortable. But the hot-cold contrast is what produces the famous "totonou" feeling, so it's worth trying at least once.
How many cycles should I do?
Two to three rounds of sauna → cold → rest is the classic routine. Hydrate between rounds, and stop whenever you feel done.
Do I shower again at the end?
A quick final rinse (no soap needed) is customary before you dry off with your large towel and return to the changing room.
Now you're ready. Find a sauna hotel for your route, brush up on the etiquette basics, and if you want a guaranteed great first session, try Capsule Inn Otsuka in Tokyo:
Capsule Inn Otsuka
カプセルイン大塚
Tokyo · Sauna 100°C · Water 15°C · Tattoo OK
View details & booking →
Prefer a modern, tattoo-friendly option? zen pairs a 105°C self-loyly sauna with a 16°C plunge and an outdoor bath.