Japan
Satellite: Sentinel-2 cloudless 2016 by EOX (CC BY 4.0). Outline and points © OpenStreetMap contributors / Natural Earth. North up.
In numbers
38.3km²
Area
53km
Coastline
453m
Highest point
Mount Kannomine
7,281
People
27°C
Warmest sea
August
340km
To the mainland
When to go to Ōsakikamijima
Best for the beach from July to October.
The sea is warmest in August (27 °C) and coolest in February (13 °C). Comfortable swimming (21 °C or more): from June to October.
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 Hiroshima, Japan
Ōsakikamijima is an island in Japan. It covers 38.3 km², with 53 km of coastline. Its highest point, Mount Kannomine, rises to 453 m. About 7,281 people live on it. The nearest mainland is 340 km away.
Getting there
- Hiroshima Airport (HIJ)nearest airport with scheduled flights · 22 km in a straight lineCar hire at KCZ airport (Nankoku)Discover Cars · Affiliate link↗
- FerriesShimanami Kaiun Ferry, Omishima Blueline Ferry, Akitsu Ferry, Sanyo Syosen Ferry / Ohsaki Kisen Ferry
- 340 km from the mainlanddistance to the nearest continental coast
- From July to Octoberbest 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 Ōsakikamijima.
- 1beaches
- 1viewpoints
- 1lighthouses
- 7ferry terminalsAkashi Port, Kinoe Tenma Port, Okiura Port and 4 more
- 10named peaksMount Kanno and 9 more
- 1hotels, guesthouses and apartments
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
Ōsakikamijima in our other atlases
Everything Coastya, Peakyas, Lakeyas and Cascadyas know about what lies inside Ōsakikamijima, each with its own numbers.
1beachCoastya
3mountainsPeakyas
Highest point
453m
Mount Kannomine
prominence 453 m · according to Peakyas
Beach with the warmest sea
27.5°C
Kinoe-kō
sea in the warmest month · according to Coastya
3 mountains
on Peakyas, the mountain atlas
- Mount Kannomineprominence 453 m453m
- Okō-yama
- Shinpō-san
The shape of the land.
On average the island stands 82 m above the sea. 91 % of it is below 200 m.
- 44 %0–50 m
- 48 %50–200 m
- 9 %200–500 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
- Sakaridani7,158 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 | 9 | 12 | 17 | 22 | 25 | 29 | 30 | 26 | 21 | 15 | 10 |
| Night low (°C) | 1 | 1 | 4 | 8 | 13 | 18 | 22 | 23 | 20 | 14 | 8 | 3 |
| Sea (°C) | 15 | 13 | 13 | 15 | 18 | 21 | 25 | 27 | 26 | 23 | 20 | 17 |
| Rain (mm) | 53 | 79 | 112 | 133 | 165 | 248 | 258 | 157 | 204 | 137 | 80 | 72 |
| Wet days | 7 | 8 | 11 | 11 | 11 | 15 | 15 | 14 | 14 | 10 | 8 | 8 |
| Sun h/day | 3.9 | 4.4 | 5.4 | 6.3 | 6.6 | 5.1 | 5.6 | 6.9 | 5.3 | 5.2 | 4.4 | 3.6 |
| Wind (km/h) | 14 | 13 | 13 | 12 | 10 | 8 | 9 | 9 | 10 | 11 | 11 | 13 |
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 | −1.1 | −1.1 | −1.2 | −0.7 | +0.2 | +0.3 | +0.6 | +0.7 | +0.2 | +0.7 | +0.5 |
| 2021 | −1.8 | −0.6 | −1.3 | −0.1 | +0.2 | +0.5 | +0.5 | +0.9 | +1.0 | +0.8 | −0.2 | −0.8 |
| 2022 | −2.0 | −2.7 | −1.9 | −0.6 | −0.5 | −0.4 | +0.5 | +0.8 | +1.3 | +0.9 | +0.5 | +0.3 |
| 2023 | −1.6 | −1.8 | −1.1 | −0.4 | −0.2 | −0.5 | −0.1 | +0.3 | +1.1 | +0.5 | +0.9 | ±0.0 |
| 2024 | −0.8 | −1.1 | −1.8 | ±0.0 | −0.1 | −0.3 | +0.6 | +1.3 | +2.3 | +1.8 | +0.9 | −0.5 |
| 2025 | −1.9 | −2.2 | −2.1 | −1.6 | −0.9 | −0.1 | +0.9 | +0.8 | +1.6 | +1.7 | +0.9 | −0.1 |
+1 warmer than usual −1 cooler than usual
Photos
Seen by visitors.
Nearby
More islands nearby.
About these numbers
| Names, area, population | Wikidata (Q11435005) · 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 | Coastya, Peakyas — Wikidata · CC0; © OpenStreetMap contributors · ODbL; GeoNames · CC BY 4.0; NOAA OISST |
Every figure is an average, an estimate or a count from a public dataset. Licences and methods: data sources.
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