Major city · 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.
More
More ways in
Local time, weather, currency, airports
- Weather
- see forecast
- Currency
- JPY
- Best months
- Apr–Oct
- avoid Jan–Mar (cold, limited services)
- Airports
- HND · NRT
- Nights
- 1–2
Not a trip line yet
Rules in force · 5
- East Asia ↗Every border in East Asia is a full international border, Hong Kong and Macau included: an entry permission for one never covers the next.
- East Asia ↗Ferries between Korea, Japan and China cancel in rough seas and typhoons; keep a flight or a spare day behind every sea leg.
- Japan ↗IC cards (ICOCA/Suica) are topped up with cash at station machines.
- Japan ↗Smoking while walking is banned in most city centres; use designated areas.
- Japan ↗Shinkansen bags 160–250 cm (L+W+H) need a seat reserved with the oversized-baggage area.
Entry rules depend on your passport. Full visa guide
What is in this basic guide9 covered · 4 not yet ▾
In this guide
Not in this guide yet
- Walking areas with bag rules
- Day plans checked against opening hours
- Airport-to-bed timings and the last safe connection
- Field-checked times and prices
Emergency numbers for Kozushima110 ▾
Tap a number to call from your phone. These are the numbers listed in this guide; a row marked check has not been verified.
EssentialsQuick answers and what things cost
Essentials
Quick answers and what things cost
Quick answers
The questions people ask first about Kozushima, one line each. Tap a card for the full answer.
- Cash or card?Cities are increasingly cashless; temples, small restaurants and some lodging taxes still want cash.Japan-wide
- SIM or eSIMData-only eSIMs are the easy route: buy before you fly; voice SIMs need a residence card.Japan-wide
- Tap waterSafe from the tap everywhere; stations and parks have fountains.Japan-wide
- TippingRestaurants and bars: No tip; staff will chase you to return money left on the table.Japan-wide
- Plugs & powerSockets A/B. US/Canada (A/B): fits · UK/Ireland (G): adapter · Australia/NZ (I): adapter. 100 V: UK and AU 230 V-only devices need a converter; most chargers are dual-voltage.Japan-wide
- SafetyKozushima is generally safe; crime is low but watch for strong currents when swimming and keep valuables secure on ferries.
Show all 12 answers
- RestroomsFree, clean public toilets in stations, parks and konbini; paper goes in the toilet.Japan-wide
- Emergency numbers110 police · 119 fire and ambulance (not 911, 999 or 000)
- Sundays & holidaysMuseums close on Mondays (Tuesday when Monday is a holiday); many family restaurants close one weekday, often Tuesday or Wednesday…Japan-wide
- Your embassyFind your embassy's 24-hour line before you fly.
- AirportHND Tokyo Haneda Airport (Main international gateway; 2 h bus/ferry transfer to Takeshiba pier).
- Getting aroundFerry arrives at Kozushima Port; local bus runs to the north‑coast trail and hot‑spring centre.
DecideWhat it is known for, and when the weather works
Decide
What it is known for, and when the weather works
At a glance
What the city is known for, how you fly in, and where to find the phrases.
- Airports
- 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)
Best months at a glance
From the guide's best and avoid lists
Jan
Avoid
10°C (50°F)50°F (10°C)
Feb
Avoid
10°C (50°F)50°F (10°C)
Mar
Avoid
13°C (55°F)55°F (13°C)
Apr
Best
18°C (64°F)64°F (18°C)
May
Best
22°C (72°F)72°F (22°C)
Jun
Best
25°C (77°F)77°F (25°C)
Jul
Best
29°C (84°F)84°F (29°C)
Aug
Best
30°C (86°F)86°F (30°C)
Sep
Best
27°C (81°F)81°F (27°C)
Oct
Best
22°C (72°F)72°F (22°C)
Nov
not flagged
16°C (61°F)61°F (16°C)
Dec
not flagged
11°C (52°F)52°F (11°C)
Best: Apr–Oct. Avoid: Jan–Mar. Month by month →
Warmest Aug (30°C (86°F)86°F (30°C)), coolest Jan (2°C (36°F)36°F (2°C) low), wettest Jul (10 rain days), driest Jan (5). Averages, not a forecast.
Weather and climate
Kozushima: next 7 days
Loading forecast…
Forecast: Open-Meteo (CC BY 4.0), model data for this point.
Air quality
Loading…
Model estimate (CAMS via Open-Meteo), not a street-level station; readings near busy roads run higher.
Jan
10°C (50°F)50°F (10°C)
2°C (36°F)36°F (2°C)
5 rd
Feb
10°C (50°F)50°F (10°C)
2°C (36°F)36°F (2°C)
5 rd
Mar
13°C (55°F)55°F (13°C)
5°C (41°F)41°F (5°C)
6 rd
Apr
18°C (64°F)64°F (18°C)
10°C (50°F)50°F (10°C)
7 rd
May
22°C (72°F)72°F (22°C)
14°C (57°F)57°F (14°C)
8 rd
Jun
25°C (77°F)77°F (25°C)
18°C (64°F)64°F (18°C)
9 rd
Jul
29°C (84°F)84°F (29°C)
22°C (72°F)72°F (22°C)
10 rd
Aug
30°C (86°F)86°F (30°C)
23°C (73°F)73°F (23°C)
10 rd
Sep
27°C (81°F)81°F (27°C)
20°C (68°F)68°F (20°C)
9 rd
Oct
22°C (72°F)72°F (22°C)
14°C (57°F)57°F (14°C)
7 rd
Nov
16°C (61°F)61°F (16°C)
9°C (48°F)48°F (9°C)
6 rd
Dec
11°C (52°F)52°F (11°C)
4°C (39°F)39°F (4°C)
5 rd
High / low, both scales · rd = rain days
Arrive & moveAirports are listed under At a glance; this is how to move once you are in
Arrive & move
Airports are listed under At a glance; this is how to move once you are in
Getting 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.
Nearest full guides
Straight-line distance, not travel time
See & doDay-trips, door to door
See & do
Day-trips, door to door
Day-trips
Nii‑jima
cautionDoor to door: ≈1 h total
Ferry from Kozushima Port, about 30 min (check schedule)
Limited services; only for a quick visit.
Eat & sleepWhich area to sleep in
Eat & sleep
Which area to sleep in
Where to sleep
Areas, not hotels: pick the one that fits your arrival time and plans.
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.
PracticalWhat a day costs, what to watch out for, and the pocket card
Practical
What a day costs, what to watch out for, and the pocket card
Cost per day
- Budget
- ¥5,000–8,000 (≈ US$35–55) excl. bed
- Mid
- ¥8,000–12,000 (≈ US$55–85) excl. bed
- High
- ¥12,000 (≈ US$85)+ excl. bed
Trip budget
| Ryokan (Syusou) per person, meals included1 × 2 nights × ¥7,500 | ¥15,000 |
| Food, local transport, entries1 × 2 days × ¥8,000 | ¥16,000 |
| Overnight ferry Tokyo ↔ Kozushima (reclining seat)1 × ¥6,500 · check | ¥6,500 |
| Hot‑spring centre entry1 × ¥800 · check | ¥800 |
| eSIM, 1 week data1 × ¥2,500 | ¥2,500 |
| Buffer 10%Price creep, a taxi you did not plan, one splurge | ¥4,080 |
| Trip total≈ ¥22,440 per person per day, bed included | ¥44,880≈ US$350 |
check
2026 estimate in yen; ferry and meals excluded. Your choices stay in this browser.
Prices of common things
| Overnight ferry (Tokyo ↔ Kozushima, reclining seat) | ¥6,500 (≈ US$45) |
| Hot‑spring centre entry (adult) | ¥800 (≈ US$6) |
| Camping ground deck tent per person per day | ¥1,000 (≈ US$7) |
| Hotel Kozukan per night per person (incl. meals) | ¥10,500 (≈ US$75) |
| Kozushima shōchū (500 ml bottle) | ¥1,200–1,800 (≈ US$9–13) |
2026 estimate; check locally.
Watch out
Safety
- Overnight ferry departs Tokyo at 22:00, arrives 10:00; check seasonal schedule.Overnight ferry departs Tokyo at 10:00 PM, arrives 10:00 AM; check seasonal schedule.
- Hot‑spring centre closed Wednesdays; plan around it.
- In low season many restaurants close; bring food or camp‑cook.
Emergency numbers
- Police
- 110
- Fire and ambulance
- 119
Pocket card
Fill in, then print or save as PDF
Stays in this browser only; nothing is sent anywhere.
KozushimaKozushima
Pocket card · Voykit
My bed tonight
—
—
—
ここまでお願いしますTo this address, please
Emergency
- Police110
- Fire and ambulance119
Embassy
US consulate in Tokyo; other nations in Tokyo.
My embassy: —
Fare anchors (2026 estimate)
- Tokyo → Kozushima (overnight ferry, reclining seat): about ¥6,500 (≈ US$45), 12 h travel (check)
- Hot‑spring centre entry: ¥800 (≈ US$6) adult, ¥400 (≈ US$3) child
Say or show
- すみません — Excuse me / Sorry (sumimasen)
- ありがとうございます — Thank you (arigatō gozaimasu)
- いくらですか？ — How much is it? (ikura desu ka)
- カードで払えますか？ — Can I pay by card? (kādo de haraemasu ka)
- トイレはどこですか？ — Where is the toilet? (toire wa doko desu ka)
- テントの場所をお願いします — I would like a tent spot (tento no basho o onegaishimasu)
Deep diveWhat this guide covers so far, and its sources
Deep dive
What this guide covers so far, and its sources
Not a trip line yet
This is a basic guide: no airport-to-bed contract, walking clusters or day plans are published for Kozushima. Airport, fare and schedule details are unverified; check the operators before you fly.
What we know, and what is coming
On this page
- Best months: Apr–Oct · avoid Jan–Mar (cold, limited services) · month by month →
- 2 airports and 3 areas to sleep in
- Weather: a 7-day forecast and monthly averages
- Cost per day in 3 bands
- 1 day-trips, door to door
- 3 things to watch out for, with emergency numbers
Coming as the guide grows
- An airport-to-bed path that says whether a late landing still works
- Walking clusters with bag rules
- Day plans checked against opening hours
- Field-verified times and fares
Sources
Ask about Kozushima
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