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Voykit pocket guide · Japan
Kozushima
Spend 1–2 days on Kozushima for hiking, hot‑spring soak and diving; overnight ferry makes a 2‑day stay practical.
Kozushima is a small volcanic island in the Izu Seven Islands, reachable by overnight ferry from Tokyo. Its main attractions—Mt Tenjo, a public hot‑spring centre and several dive shops—fit comfortably into a short 1‑2‑day itinerary. Limited food outlets in low season mean bring supplies if you stay longer.
- Country
- Japan
- Best months
- Apr–Oct
- Avoid
- Jan–Mar (cold, limited services)
- Stay
- 1–2 nights
Checked 2026-09. Prices, hours and rules change; anything marked (check) is not confirmed.
Essentials
- Currency
- JPY
- Money
- Cities are increasingly cashless; temples, small restaurants and some lodging taxes still want cash.
- Daily spend
- Budget ¥5,000–8,000 excl. bed · Mid ¥8,000–12,000 excl. bed · High ¥12,000+ excl. bed (estimate; check)
- SIM and data
- Data-only eSIMs are the easy route: buy before you fly; voice SIMs need a residence card.
- Emergency
- Police 110 · Fire and ambulance 119
- Plugs
- Types A, B · 100 V · 50 Hz east (Tokyo), 60 Hz west (Osaka) · Most sockets are two flat pins without earth; European and UK plugs need an adapter. Phone and laptop chargers handle 100 V.
- Tipping
- Restaurants and bars: No tip; staff will chase you to return money left on the table.; Taxis: No tip; pay the meter.; Ryokan: Optional: ¥1,000–3,000 in an envelope for the room attendant; never loose cash.; Private guide: Not expected; a small gift or a thank-you meal is more usual.; Hotel porter: No tip.
- Water
- Safe from the tap everywhere; stations and parks have fountains.
- Toilets
- Free, clean public toilets in stations, parks and konbini; paper goes in the toilet. Rural and old stations may have squat toilets.
What things cost
| Item | Price |
|---|---|
| Overnight ferry (Tokyo ↔ Kozushima, reclining seat) | ¥6,500 |
| Hot‑spring centre entry (adult) | ¥800 |
| Camping ground deck tent per person per day | ¥1,000 |
| Hotel Kozukan per night per person (incl. meals) | ¥10,500 |
| Kozushima shōchū (500 ml bottle) | ¥1,200–1,800 |
Desk estimates, checked 2026-09; check locally.
Get in
By air
- HND · Tokyo Haneda Airport
- Main international gateway; 2 h bus/ferry transfer to Takeshiba pier
- NRT · Narita International Airport
- 2 h 30 min bus/ferry transfer to Takeshiba pier
Typical fares
- Tokyo → Kozushima (overnight ferry, reclining seat)
- about ¥6,500, 12 h travel (check)
- Hot‑spring centre entry
- ¥800 adult, ¥400 child
Show 7 more sections and the pocket cardHideGet around, See and do, Sleep, Phrase card, Etiquette, safety and scams, One and two days, Sources, Pocket card
Get around
Ferry arrives at Kozushima Port; local bus runs to the north‑coast trail and hot‑spring centre. Most sites are walkable from the port.
See and do
Known for
- Mt. Tenjo
- Kozushima Hot Spring Center
- Scuba diving (Dive Nangoku, Aqua Mate, Tears Blue)
Day trips
| Where | How | Time |
|---|---|---|
| Nii‑jima | Ferry from Kozushima Port, about 30 min (check schedule) | ≈1 h total |
Sleep
- Hotel Kozukan
- From ¥10,500 per night per person, meals included; closest to port.
- Syusou Ryokan
- ¥7,500 per night per person, meals included; traditional style.
- Takouwan Camping Ground
- Deck tent ¥1,000 per person per day; free tent ¥400 per person per day.
Phrase card
| English | Say or show |
|---|---|
| Excuse me / Sorry | すみませんsumimasen |
| Thank you | ありがとうございますarigatō gozaimasu |
| How much is it? | いくらですか？ikura desu ka |
| Can I pay by card? | カードで払えますか？kādo de haraemasu ka |
| Where is the toilet? | トイレはどこですか？toire wa doko desu ka |
| I would like a tent spot | テントの場所をお願いしますtento no basho o onegaishimasu |
Etiquette, safety and scams
Etiquette
- Greeting: A small bow; a handshake if the other person offers; avoid: Hugs, back slaps, loud greetings
- Names: Family name plus -san; avoid: First names unless invited; adding -san to your own name
- Paying: Put money in the tray at the register; avoid: Tipping, or leaving loose cash for staff
- Trains: Queue at the floor marks, phone on silent, ask before reclining on the Shinkansen; avoid: Phone calls, eating on crowded commuter trains, blocking doors with bags
- Escalators: Stand on the side locals use — left in Tokyo, right in Osaka; stations now ask people to stand still on both; avoid: Stopping at the top or bottom
- Shoes: Off at the step-up entrance; toilet slippers only inside the toilet; avoid: Stepping on tatami in shoes or slippers
- Shrines: Rinse hands at the basin; bow twice, clap twice, bow once; avoid: Walking down the centre of the approach, which is for the deity
- Gifts: Offer and receive with both hands; bring a small omiyage for hosts; avoid: Sets of four; cash outside an envelope
Scams and watch-outs
- Overnight ferry departs Tokyo at 22:00, arrives 10:00; check seasonal schedule.
- Hot‑spring centre closed Wednesdays; plan around it.
- In low season many restaurants close; bring food or camp‑cook.
Kozushima is generally safe; crime is low but watch for strong currents when swimming and keep valuables secure on ferries.
One and two days
No timed day plan for Kozushima yet. Suggested stay: 1–2 nights. Build a day from the list below, mornings for the big sight.
- Mt. Tenjo
- Kozushima Hot Spring Center
- Scuba diving (Dive Nangoku, Aqua Mate, Tears Blue)
Sources
Written by Voykit; facts cross-checked against these sources, last desk check 2026-09. Prices, hours and rules change: check on the day.
- Kozushima local tourist site: kozushima.com/
- Wikivoyage: Kozushima, revision 5013203 (CC BY-SA 4.0): en.wikivoyage.org/w/index.php?oldid=5013203
Pocket card
Cut along the border and keep it in your wallet. Show the local-script lines to a driver.
Printed from Voykit (/kozushima). Written by Voykit; checked 2026-09. Estimates only: confirm prices, hours and entry rules on the day.