Territory capital · South Korea
Udo Island
Take a 30‑min ferry from Seongsan (Jeju) and spend a day biking or bus‑touring Udo; no overnight stay needed.
Udo Island is a 3.5 km offshore lava plateau with beaches, peaks and a sausage street. A ferry from Jeju runs every 30 minutes (9:00‑17:00). The island is small enough to see by bike (13 km loop) or the 1,000 won tourist bus, so one day is sufficient.
More
More ways in
Local time, weather, currency, airports
- Weather
- see forecast
- Currency
- KRW
- Best months
- Apr–Jun, Sep–Oct
- avoid Jul–Aug (heat, crowds)
- Airport
- CJU
- Nights
- 0
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.
- South Korea ↗Check K-ETA and visa status on the official sites before you fly; the list of nationalities exempted from registering online changes year by year.
- South Korea ↗Google Maps gives poor walking and driving directions in Korea; use Naver Map or Kakao Map for routes.
- South Korea ↗Buy a T-money card (or use a phone-based transit pass) for subway and buses; it also pays at convenience stores and many taxis.
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 Udo Island112 ▾
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 Udo Island, one line each. Tap a card for the full answer.
- Cash or card?Cards work almost everywhere, including taxis, convenience stores and many market stalls; carry ₩30,000–50,000 (≈ US$25–40) in cash for street food…South Korea-wide
- SIM or eSIMSK Telecom, KT and LG U+ sell tourist SIMs and eSIMs at airport arrivals; a passport is required, and data-only plans are cheapest.South Korea-wide
- Tap waterOfficially safe from the tap; most people drink filtered water, and restaurants serve it free.South Korea-wide
- TippingRestaurants and cafés: No tip; a service charge appears only in top hotels.South Korea-wide
- Plugs & powerSockets C/F. US/Canada (A/B): adapter · UK/Ireland (G): adapter · Australia/NZ (I): adapter. 220 V: US 120 V-only devices (hair dryers) need a converter; most chargers are dual-voltage.South Korea-wide
- SafetyUdo Island is low‑risk for tourists; follow ferry ID/passport rules and watch for strong sun and occasional rough seas.
Show all 12 answers
- RestroomsFree, clean public toilets in every subway station; paper goes in the toilet in new buildings, in the bin where a sign asks.South Korea-wide
- Emergency numbers112 police · 119 fire and ambulance · 1330 Travel helpline (not 911, 999 or 000)
- Sundays & holidaysPalaces close one weekday (Gyeongbokgung Tuesday, others mostly Monday); national museums open daily but close on 1 Jan, Seollal and Chuseok days.South Korea-wide
- Your embassyFind your embassy's 24-hour line before you fly.
- AirportCJU Jeju International Airport (From Jeju City, take a bus or taxi to Seongsan Port (about 1 h), then the ferry to Udo.).
- Getting aroundFerry from Seongsan Port (30 min, every 30 min, 9:00‑17:00).Ferry from Seongsan Port (30 min, every 30 min, 9:00 AM‑5:00 PM).
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
- CJU Jeju International Airport (From Jeju City, take a bus or taxi to Seongsan Port (about 1 h), then the ferry to Udo.)
Best months at a glance
From the guide's best and avoid lists
Jan
not flagged
7°C (45°F)45°F (7°C)
Feb
not flagged
8°C (46°F)46°F (8°C)
Mar
not flagged
12°C (54°F)54°F (12°C)
Apr
Best
16°C (61°F)61°F (16°C)
May
Best
20°C (68°F)68°F (20°C)
Jun
Best
24°C (75°F)75°F (24°C)
Jul
Avoid
28°C (82°F)82°F (28°C)
Aug
Avoid
29°C (84°F)84°F (29°C)
Sep
Best
25°C (77°F)77°F (25°C)
Oct
Best
20°C (68°F)68°F (20°C)
Nov
not flagged
14°C (57°F)57°F (14°C)
Dec
not flagged
9°C (48°F)48°F (9°C)
Best: Apr–Jun, Sep–Oct. Avoid: Jul–Aug. Month by month →
Warmest Aug (29°C (84°F)84°F (29°C)), coolest Jan (−2°C (28°F)28°F (−2°C) low), wettest Apr (9 rain days), driest Feb (6). Averages, not a forecast.
Weather and climate
Udo Island: next 7 days
Loading forecast…
Forecast: Open-Meteo (CC BY 4.0), model data for this point.
Air quality
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Model estimate (CAMS via Open-Meteo), not a street-level station; readings near busy roads run higher.
Jan
7°C (45°F)45°F (7°C)
−2°C (28°F)28°F (−2°C)
7 rd
Feb
8°C (46°F)46°F (8°C)
−1°C (30°F)30°F (−1°C)
6 rd
Mar
12°C (54°F)54°F (12°C)
3°C (37°F)37°F (3°C)
8 rd
Apr
16°C (61°F)61°F (16°C)
7°C (45°F)45°F (7°C)
9 rd
May
20°C (68°F)68°F (20°C)
12°C (54°F)54°F (12°C)
9 rd
Jun
24°C (75°F)75°F (24°C)
16°C (61°F)61°F (16°C)
8 rd
Jul
28°C (82°F)82°F (28°C)
20°C (68°F)68°F (20°C)
7 rd
Aug
29°C (84°F)84°F (29°C)
21°C (70°F)70°F (21°C)
7 rd
Sep
25°C (77°F)77°F (25°C)
17°C (63°F)63°F (17°C)
8 rd
Oct
20°C (68°F)68°F (20°C)
12°C (54°F)54°F (12°C)
9 rd
Nov
14°C (57°F)57°F (14°C)
6°C (43°F)43°F (6°C)
9 rd
Dec
9°C (48°F)48°F (9°C)
1°C (34°F)34°F (1°C)
8 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 from Seongsan Port (30 min, every 30 min, 9:00‑17:00). On Udo, use the 1,000 won tourist bus (30‑min interval) or rent a bicycle (≈2,000 won/hr).
Nearest full guides
Straight-line distance, not travel time
See & doDay-trips, door to door
See & do
Day-trips, door to door
Day-trips
Door to door: ≈2 h
Ferry from Seongsan Port to Udo (30 min), then Udo tourist bus back to the port; total about 2 h round trip
Check ferry schedule for seasonal changes
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.
Jeju Island
Most visitors stay on Jeju and take a day trip to Udo.
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
- ₩15,000–20,000 (≈ US$11–15) excl. bed
- Mid
- ₩20,000–30,000 (≈ US$15–25) excl. bed
Trip budget
Prices of common things
| Ferry round‑tripcheck | ₩6,000 (≈ US$5) |
| Udo tourist bus single ridetransport card | ₩1,000 (≈ under US$1) |
| Bike rental (hourly)check | ₩2,000 (≈ US$2) |
| Udo Sausage (street food) | ₩5,000–8,000 (≈ US$4–6) |
2026 estimate; check locally.
Watch out
Safety
- Ferry requires a Korean ID or passport.
- Bus and bike rentals may be full in peak season; plan early.
Emergency numbers
- Police
- 112
- Fire and ambulance
- 119
- Travel helpline
- 1330
Pocket card
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Udo IslandUdo Island
Pocket card · Voykit
My bed tonight
—
—
—
이 주소로 가 주세요To this address, please
Emergency
- Police112
- Fire and ambulance119
- Travel helpline1330
Embassy
US consulate in Jeju (check address); other nations have consulates in Seoul.
My embassy: —
Fare anchors (2026 estimate)
- Ferry Seongsan ↔ Udo (round trip): about ₩6,000 (≈ US$5), 30 min each way (check)
- Udo tourist bus single ride: ₩1,000 (≈ under US$1) per trip, 30‑min interval
- Bike rental (hourly): ≈₩2,000 per hour
Say or show
- 죄송합니다 — Excuse me / Sorry (joesonghamnida)
- 감사합니다 — Thank you (kamsahamnida)
- 얼마예요? — How much is it? (eolmayeyo?)
- 버스 정류장은 어디에요? — Where is the bus stop? (beoseu jeongryujangeun eodieyo?)
- 지도 주세요 — Can I have a map? (jido juseyo)
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 Udo Island. 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–Jun, Sep–Oct · avoid Jul–Aug (heat, crowds) · month by month →
- 1 airport and 1 area to sleep in
- Weather: a 7-day forecast and monthly averages
- Cost per day in 2 bands
- 1 day-trips, door to door
- 2 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 Udo Island
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