First-time onsen guide 2026: how to bathe, tattoo rules, and what it actually costs
⚡ 30-Second Answer: First-timer onsen rules: ①wash body before entering, ②naked (no towels in water), ③towel out of bath, ④cover tattoos or check tattoo-OK venues, ⑤entry ¥500-1,500. Day-trip onsen = urban super-sento / ryokan onsen / temple onsen — plenty of options. Card/e-money accepted increasingly, but entry fee is often cash + ¥100 coins for lockers.
Quick Reference Value Entry fee ¥500-1,500 Tattoo Cover or check tattoo-OK Cash needed ¥1,500-3,000 + ¥100 coins Urban super-sento Card OK growing Ryokan onsen Included in stay Last verified June 2026
Onsen — Japanese natural hot springs — are one of the most-anticipated and most-cultural experiences for foreign tourists in Japan. Etiquette is genuinely strict, the gender-separated bathing is non-negotiable at traditional onsen, and the tattoo question is a real issue that has been slowly evolving. The basic process: undress completely in the changing room, wash thoroughly while seated at the row of showers, then enter the hot bath. Most important rules: no swimsuits, no towels in the water, no phones, no soap in the bath itself, and bathe completely naked. Costs range widely: ¥500 for a city sento (public bath), ¥1,000-¥1,500 for a tourist-friendly onsen day trip, ¥3,000+ for a high-end day-use onsen, and ¥15,000-¥30,000/night for ryokan with full kaiseki + onsen package.
TL;DR
- Cost: ¥500 (city sento) / ¥1,000-¥3,000 (typical day onsen) / ¥15,000-¥30,000 (ryokan w/ onsen + dinner)
- Process: undress fully → shower seated → enter bath naked → soak 10-15 min → repeat or exit
- Required: complete nudity (no swimsuits), wash before entering, no soap/shampoo in the bath itself
- Forbidden: phones, towels in the water, splashing, loud talking, washing inside the bath
- Tattoos: traditional onsen = often refused; tattoo-friendly onsen growing in count; check before going
- What to bring: small towel (washcloth), modesty towel (optional, for walking), changing clothes
- Time needed: 1-2 hours for a complete experience
What "onsen" actually means
Onsen (温泉, "hot spring") is a natural hot spring bath, traditionally from volcanic geothermal water. The water has specific mineral compositions and health benefits associated with it.
Two related but distinct things:
- Onsen (温泉): natural hot spring, has special mineral content
- Sento (銭湯): traditional public bath with regular heated water, often city-based
Both share the same etiquette and rules. The difference is the water source.
A ryokan (旅館) is a traditional Japanese inn that typically includes onsen access. A ryokan stay = sleeping on a futon + sliding paper doors + multi-course kaiseki dinner + onsen bath included.
The cost spectrum
| Type | Typical cost | What you get |
|---|---|---|
| City sento | ¥500-¥800 | Traditional public bath, not natural mineral water |
| Day onsen / Spa onsen | ¥1,000-¥1,500 | Natural onsen, day visit only |
| Tourist-popular onsen (Yumoto, Hakone day passes) | ¥1,500-¥3,000 | Multiple bath options, often relaxation area |
| Onsen + meal day package | ¥3,000-¥5,000 | Bath + traditional lunch combo |
| Day-use luxury onsen | ¥5,000-¥10,000 | Premium spa-like facilities, ¥1,000+ rotenburo (outdoor bath) |
| Ryokan overnight (mid-tier) | ¥15,000-¥25,000/person/night | Room, kaiseki dinner, breakfast, full onsen access |
| Ryokan luxury (Hakone, Karuizawa, Atami) | ¥30,000-¥80,000+/person/night | Private rotenburo in room, premium kaiseki |
The basic process (step-by-step)
Step 1: Arrive and enter
You arrive at the onsen, sento, or ryokan. Take off your shoes at the entrance (most have shoe lockers; key returns at the end), pay if required, receive a small towel and modesty cloth.
Step 2: Gender-separated changing rooms
The bath is gender-separated. Men's (男 / blue curtain) and women's (女 / red curtain). Some smaller onsen alternate by time of day. Confirm at the entrance.
Step 3: Undress completely
Inside the changing room, undress fully and put your clothes + valuables in a locker (¥100 deposit returned). No underwear, no swimsuit in the bath.
Take only:
- Your small towel (called "tenugui") into the bath area
- A modesty cloth (optional) — small cloth to hold in front of you while walking
Step 4: Pre-bath washing (this is mandatory)
Walk into the bath area. There will be a row of shower stations along one wall. Sit on the small plastic stool at one, and:
- Rinse the seat and area where you'll sit
- Wet yourself with the shower head
- Wash your entire body with soap (usually provided)
- Wash your hair with shampoo if needed
- Rinse off completely — no soap should remain on your skin
- Place your stool back, rinse the seat for the next user
This step takes 5-10 minutes and is non-negotiable. You don't enter the bath dirty.
Step 5: Enter the bath
Walk to the bath. Step in slowly — the water is often 40-43°C (104-109°F), which is hotter than you might expect. Acclimate gradually:
- First, sit at the edge for 30 seconds
- Lower yourself slowly to chest level
- Stay 5-10 minutes initially
Inside the bath:
- No soap, no washing
- No towels in the water (rest yours on your head or on the side)
- No phones (and no photos — this is a hard rule)
- No splashing, no swimming
- No talking loudly — this is a quiet relaxation space
Step 6: Repeat or exit
You can:
- Soak 5-15 minutes, get out, cool down, then re-enter
- Try different baths (most onsen have multiple: indoor, outdoor, hot, lukewarm, sometimes a sauna)
- Stay 1-2 hours total
When you're done, rinse off with a quick shower if you want (the natural minerals can dry out your skin if left on), towel off in the changing room, and dress.
Step 7: Post-bath rest
Most onsen have a relaxation area with vending machines (try the post-bath specialty: cold milk or fruit drinks). Sit, drink, relax. The blood-pressure drop after a hot bath is real — give yourself 15-30 minutes before walking back outside.
The tattoo question
This is the most-asked question by foreign tourists, and the answer is more complex than "yes/no":
Traditional onsen (still about 70%)
Many traditional onsen explicitly prohibit tattoos. Signs at the entrance say "刺青お断り" (tattoos prohibited) or "No Tattoos." This is rooted in historical association with yakuza (organized crime) in Japanese culture.
Tattoo-friendly onsen (growing, ~30%)
Increasingly, especially in tourist-popular areas:
- Tattoo-friendly onsen with explicit signage
- Tattoo cover-up patches at front desk (you cover tattoos with skin-colored adhesive patches)
- Private rotenburo (your own outdoor bath) at ryokan, where the no-tattoo rule doesn't apply
- Day-use private onsen rentable by the hour
How to find tattoo-friendly options
- Japanonsen.com maintains tattoo-friendly lists
- Ryokan staff often pre-confirm when you book
- Search "tattoo onsen [city]" — community lists in English
Cover-up patches
Some onsen will lend you skin-colored adhesive patches (¥0 - ¥500). If your tattoos are small enough to be covered (under ~10cm × 10cm), this is often acceptable even at otherwise-strict onsen. Larger tattoos (sleeves, back pieces) won't fit under patches.
Worst case: refused entry
If you've gone to an onsen that bans tattoos and you're refused entry, don't argue. The staff are following written policy. Options:
- Find a tattoo-friendly alternative (~20-30 min by phone search)
- Book a ryokan with private in-room rotenburo (more expensive but works regardless)
- Try a sento (public bath) which has less strict rules in some cases