South Korea
Satellite: Sentinel-2 cloudless 2016 by EOX (CC BY 4.0). Outline and points © OpenStreetMap contributors / Natural Earth. North up.
In numbers
73.5km²
Area
61km
Coastline
984m
Highest point
Seonginbong
9,114
People
25°C
Warmest sea
August
129km
To the mainland
When to go to Ulleungdo
Best for the beach from July to September.
The sea is warmest in August (25 °C) and coolest in March (11 °C). Comfortable swimming (21 °C or more): from July to September.
Averages 1991–2020. Sea: NOAA OISST, the water within 35 km of the coast. Air, rain and sun: NASA POWER. Best months weigh warm afternoons (23–30 °C), sea of 24 °C or more and few wet days.
Island
Ulleungdo is an island in South Korea. It covers 73.5 km², with 61 km of coastline. Its highest point, Seonginbong, rises to 984 m. About 9,114 people live on it. The nearest mainland is 129 km away.
Getting there
- Yangyang International Airport (YNY)nearest airport with scheduled flights · 202 km in a straight lineCar hire at IZO airport (Izumo)Discover Cars · Affiliate link↗
- FerriesDonghae (Mukho) - Ulleung, Ulleung Island(Sadong port) - Dokdo Island(Dongdo), Uljin (Hupo) - Ulleung (Jeodong), Gangneung - Ulleung Island (Jeodong Port)
- 129 km from the mainlanddistance to the nearest continental coast
- From July to Septemberbest months to go (from 30 years of averages)
Plan the trip
Ferries, stays and things to do
Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.
On the island
What you find on Ulleungdo.
- 2beaches
- 15viewpointsView for Rocks, Best View, Dokdo Observatory and 12 more
- 5lighthousesHaengnamdeungdae and 4 more
- 4ferry terminalsUlleung Cruise Terminal, Ulleung Ferry Port Terminal and 2 more
- 1marinas
- 39named peaksSeonginbong (Mt.), Al-bong, Bipa-san and 36 more
- 10campsites
- 14hotels, guesthouses and apartments
- 4restaurants, cafés and bars
Counted in OpenStreetMap, the map anyone can edit, inside the island's outline. A low number may only mean nobody has mapped it yet.
Cross-checked with our atlases
Ulleungdo in our other atlases
Everything Coastya, Peakyas, Lakeyas and Cascadyas know about what lies inside Ulleungdo, each with its own numbers.
9mountainsPeakyas
Highest point
984m
Seonginbong
prominence 984 m · according to Peakyas
9 mountains
on Peakyas, the mountain atlas
- Seonginbongprominence 984 m984m
- Al-bong
- Ch'ondu-san
- Ch'o-bong
- Nari-bong
- Miruk-san
- Kwanch'ang-bong
- Turu-bong
1 more on PeakyasOpen Peakyas ↗
The shape of the land.
On average the island stands 343 m above the sea. 31 % of it is below 200 m.
- 6 %0–50 m
- 24 %50–200 m
- 46 %200–500 m
- 23 %500–1,000 m
Share of the island's area in each altitude band, from the Copernicus DEM (30 m, read at 30–240 m on large islands).
Size, for real
Next to islands you may know.
5 km
All outlines drawn to the same scale (Natural Earth and OpenStreetMap).
Towns on the island
- Dodong-ri9,169 people
Month by month
The weather on the island.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Afternoon high (°C) | 7 | 7 | 10 | 13 | 16 | 20 | 23 | 26 | 23 | 19 | 14 | 9 |
| Night low (°C) | 4 | 5 | 7 | 11 | 15 | 19 | 22 | 24 | 22 | 17 | 12 | 7 |
| Sea (°C) | 12 | 11 | 11 | 12 | 15 | 19 | 22 | 25 | 23 | 20 | 18 | 15 |
| Rain (mm) | 55 | 60 | 59 | 80 | 84 | 105 | 205 | 172 | 152 | 80 | 67 | 66 |
| Wet days | 13 | 11 | 10 | 9 | 9 | 11 | 15 | 15 | 13 | 10 | 12 | 13 |
| Sun h/day | 2.8 | 4.2 | 5.9 | 6.9 | 7.0 | 6.5 | 5.3 | 6.3 | 5.5 | 5.5 | 3.9 | 2.7 |
| Wind (km/h) | 28 | 26 | 24 | 22 | 19 | 16 | 17 | 18 | 19 | 22 | 25 | 29 |
Averages 1991–2020 for the ~55 km NASA POWER cell over the island; the sea from NOAA OISST.
Recent years
Warmer and cooler years at sea.
Each month's sea temperature compared with its 1991–2020 average, in degrees.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020 | +0.9 | +0.7 | +0.2 | +0.2 | ±0.0 | +0.9 | −0.6 | −0.8 | −0.9 | +0.5 | +0.8 | +1.1 |
| 2021 | +0.4 | +0.8 | +1.6 | +2.8 | +0.8 | +1.1 | +3.4 | +1.8 | +0.4 | +1.1 | +0.1 | +0.7 |
| 2022 | +0.4 | +0.3 | +0.2 | +1.0 | +1.4 | +0.9 | +2.1 | +1.1 | +0.6 | +1.2 | +1.2 | +1.4 |
| 2023 | +1.0 | +1.2 | +1.9 | +2.5 | +1.3 | +1.7 | +1.2 | +1.8 | +2.4 | +1.1 | +2.5 | +2.0 |
| 2024 | +1.4 | +0.9 | +1.4 | +2.6 | +1.0 | +1.4 | +0.7 | +3.6 | +4.5 | +3.0 | +2.9 | +1.6 |
| 2025 | +0.5 | +0.1 | −0.5 | −0.5 | −0.7 | +0.3 | +3.2 | +3.0 | +2.9 | +2.3 | +1.6 | +1.2 |
+1 warmer than usual −1 cooler than usual
Photos
Seen by visitors.
Nearby
More islands nearby.
Japan
About these numbers
| Names, area, population | Wikidata (Q41172) · CC0 |
|---|---|
| Outline | © OpenStreetMap contributors · ODbL |
| Sea temperature | NOAA OISST v2.1 · 1991–2020 |
| Climate | NASA POWER · 1991–2020 |
| Relief, 3D model | Copernicus DEM GLO-30 · © DLR e.V., © Airbus Defence and Space GmbH, Copernicus/ESA |
| Beaches, ports, lighthouses, trails | © OpenStreetMap contributors · ODbL |
| Towns | GeoNames · CC BY 4.0 |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
| Beaches, mountains, lakes and waterfalls | Peakyas — Wikidata · CC0; © OpenStreetMap contributors · ODbL; GeoNames · CC BY 4.0 |
Every figure is an average, an estimate or a count from a public dataset. Licences and methods: data sources.
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