JapanJapanese archipelagoVolcanic island
Rishiri Island
182 km² rising to 1,721 m out of the Sea of Japan.
Satellite: Sentinel-2 cloudless 2016 by EOX (CC BY 4.0). Outline and points © OpenStreetMap contributors / Natural Earth. North up.
In numbers
182km²
Area
78km
Coastline
1,721m
Highest point
Mount Rishiri
5,593
People
20°C
Warmest sea
August
261km
To the mainland
When to go to Rishiri Island
Best for the beach in August.
The sea is warmest in August (20 °C) and coolest in February (4 °C). The water never reaches 21 °C: bring a wetsuit.
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 in Hokkaido, Japan
Rishiri Island is an volcanic island in Japan. It belongs to Japanese archipelago. It covers 182 km², with 78 km of coastline. Its highest point, Mount Rishiri, rises to 1,721 m. About 5,593 people live on it. The nearest mainland is 261 km away.
Getting there
- Rishiri Airport (RIS)airport on the island, with scheduled flightsCar hire at WKJ airport (Wakkanai)Discover Cars · Affiliate link↗
- FerriesRishiri Island (Oshido Mari) - Rebun Island (Kafuka), Wakkanai - Rishiri Island (Oshido Mari), Rishiri Island (Kutsugata) - Rebun Island (Kafuka)
- 261 km from the mainlanddistance to the nearest continental coast
- Augustbest 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 Rishiri Island.
- 13viewpointsCape Peshi Coast, Cape Peshi Observation Point, Mt. Rishiri 2nd viewpoint and 10 more
- 4lighthousesCape Kutsugata Lighthouse, Oshidomari Lighthouse and 2 more
- 2ferry terminalsKutsugata Ferry Terminal, Oshidomari Ferry Terminal
- 12named peaksMt. Rishiri South Peak, Mt. Sancho, Mt. Pon and 9 more
- 1volcanoesMount Rishiri
- 1waymarked walking routes
- 4campsitesFamily Camping YU-NI and 3 more
- 10hotels, guesthouses and apartments
- 15restaurants, 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
Rishiri Island in our other atlases
Everything Coastya, Peakyas, Lakeyas and Cascadyas know about what lies inside Rishiri Island, each with its own numbers.
4mountainsPeakyas
Highest point
1,721m
prominence 1,721 m · according to Peakyas
4 mountains
on Peakyas, the mountain atlas
- Mount Rishiriprominence 1,721 m1,721m
- Pon Yama
- Senhōshi-pon Yama
- Mount Pon
The shape of the land.
On average the island stands 279 m above the sea. 54 % of it is below 200 m.
- 18 %0–50 m
- 36 %50–200 m
- 29 %200–500 m
- 14 %500–1,000 m
- 4 %1,000–2,000 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.
20 km
All outlines drawn to the same scale (Natural Earth and OpenStreetMap).
Towns on the island
- Rishiri Town2,684 people
- Oshidomari2,458 people
Month by month
The weather on the island.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Afternoon high (°C) | -1 | -1 | 2 | 6 | 10 | 15 | 19 | 22 | 20 | 14 | 7 | 1 |
| Night low (°C) | -4 | -4 | -1 | 3 | 7 | 12 | 16 | 19 | 17 | 11 | 4 | -2 |
| Sea (°C) | 5 | 4 | 5 | 6 | 9 | 12 | 17 | 20 | 20 | 16 | 11 | 8 |
| Rain (mm) | 97 | 80 | 71 | 58 | 73 | 78 | 102 | 131 | 123 | 118 | 123 | 126 |
| Wet days | 24 | 19 | 15 | 11 | 11 | 11 | 13 | 13 | 15 | 16 | 19 | 24 |
| Sun h/day | 1.5 | 2.9 | 5.2 | 6.3 | 5.7 | 4.6 | 4.5 | 5.1 | 6.2 | 4.7 | 2.1 | 1.0 |
| Wind (km/h) | 27 | 27 | 26 | 23 | 20 | 17 | 16 | 17 | 21 | 26 | 29 | 30 |
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 | +0.6 | −0.5 | +0.6 | +0.8 | +0.6 | +0.4 | +1.1 | −0.3 | +0.5 | +2.3 | +1.6 | +1.7 |
| 2021 | −0.1 | −0.4 | −0.1 | +0.6 | +0.6 | −0.2 | +1.7 | +0.6 | +0.5 | +1.1 | +1.5 | +2.6 |
| 2022 | +1.5 | −0.5 | ±0.0 | +0.8 | +0.5 | +0.9 | +1.4 | +1.3 | +0.5 | +1.5 | +1.5 | +2.0 |
| 2023 | +1.8 | +1.3 | +0.7 | +1.3 | +1.1 | +2.0 | +2.2 | +1.7 | +2.6 | +2.5 | +2.9 | +2.6 |
| 2024 | +2.6 | +1.8 | −0.2 | +0.4 | −0.4 | ±0.0 | −0.2 | −0.4 | +0.1 | +0.2 | +0.5 | +1.2 |
| 2025 | +1.2 | +2.3 | +1.6 | +1.8 | +2.0 | +1.2 | +2.7 | +3.3 | +2.1 | +1.8 | −0.8 | +0.6 |
+1 warmer than usual −1 cooler than usual
Photos
Seen by visitors.




About these numbers
| Names, area, population | Wikidata (Q495476) · 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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