JapanJapanese archipelagoIslandUNESCO World Heritage

Okinoshima

0.94 km² of land in the Korea Strait.

N 0.2 km

LighthousesPeaks

Satellite: Sentinel-2 cloudless 2016 by EOX (CC BY 4.0). Outline and points © OpenStreetMap contributors / Natural Earth. North up.

In numbers

0.94km²

Area

8km

Coastline

244m

Highest point

People

27°C

Warmest sea

August

130km

To the mainland

When to go to Okinoshima

Best for the beach from July to October.

The sea is warmest in August (27 °C) and coolest in March (14 °C). Comfortable swimming (21 °C or more): from July to October.

16°10°8°

Jan9

14°11°8°

Feb9

14°13°10°

Mar12

15°16°14°

Apr11

18°19°17°

May11

21°22°21°

Jun15

24°26°25°

Jul18

27°28°27°

Aug17

26°25°24°

Sep14

23°22°20°

Oct9

21°18°15°

Nov10

18°13°10°

Dec9

Sea temperature (the water level) Air: night low to afternoon high Wet days Best months

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 Fukuoka, Japan

Okinoshima is an island in Japan. It belongs to Japanese archipelago. It covers 0.94 km², with 8 km of coastline. Its highest point rises to 244 m. About 1 people live on it. The nearest mainland is 130 km away. It is part of a UNESCO World Heritage site.

Getting there

Iki Airport (IKI)nearest airport with scheduled flights · 63 km in a straight lineCar hire at FUK airport (Fukuoka)Discover Cars · Affiliate link
130 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

Car hire at FUK airport (Fukuoka)Discover CarsSee

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 Okinoshima.

2lighthouses
1named peaksIchinodake

Counted in OpenStreetMap, the map anyone can edit, inside the island's outline. A low number may only mean nobody has mapped it yet.

The shape of the land.

On average the island stands 88 m above the sea. 96 % of it is below 200 m.

32 %0–50 m
65 %50–200 m
4 %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.

Okinoshima1 km²

Capri10 km²

Alcatraz Island0 km²

2 km

All outlines drawn to the same scale (Natural Earth and OpenStreetMap).

Month by month

The weather on the island.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Afternoon high (°C)	10	11	13	16	19	22	26	28	25	22	18	13
Night low (°C)	8	8	10	14	17	21	25	27	24	20	15	10
Sea (°C)	16	14	14	15	18	21	24	27	26	23	21	18
Rain (mm)	66	84	124	166	189	258	335	242	218	104	87	71
Wet days	9	9	12	11	11	15	18	17	14	9	10	9
Sun h/day	3.0	4.0	5.3	6.2	6.5	5.0	5.5	6.8	5.2	5.3	4.2	3.2
Wind (km/h)	27	25	24	22	19	18	18	19	23	24	23	27

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	+0.9	+0.7	+0.3	+0.2	+0.9	−0.6	+0.3	±0.0	−0.6	+0.5	+0.3
2021	+0.4	+1.4	+1.0	+1.7	+1.1	+1.5	+1.4	+0.1	+0.5	+2.1	+0.5	+0.4
2022	+0.1	−0.3	+0.5	+1.5	+1.4	+0.8	+2.1	+1.4	+0.9	+0.6	+0.3	+0.7
2023	+0.2	+0.5	+1.7	+1.9	+0.9	+1.4	+1.4	+0.6	+1.5	+0.7	+1.1	+1.0
2024	+0.5	+0.4	+0.6	+1.6	+1.3	+1.2	+1.0	+2.6	+2.9	+1.5	+0.6	+0.1
2025	−0.3	−0.7	−0.6	−0.3	−0.3	+0.4	+2.1	+1.9	+3.1	+2.5	+1.3	+0.9

+1 warmer than usual −1 cooler than usual

Photos

Seen by visitors.

Okinoshima viewing 01 — Indiana jo · CC BY-SA 4.0

Nearby

More islands nearby.

Tsushima Island

Japan694 km²649 m73 km away

Iki Island

Japan134 km²213 m63 km away

Kyushu

Japan36,782 km²1,791 m161 km away

Hirado Island

Japan164 km²535 m110 km away

Geojedo

South Korea386 km²580 m152 km away

Hashima Island

Japan0.07 km²32 m183 km away

Itsukushima

Japan30 km²535 m202 km away Etajima

Japan91 km²318 m214 km away

About these numbers

Names, area, population	Wikidata (Q7082047) · 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

Every figure is an average, an estimate or a count from a public dataset. Licences and methods: data sources.

The family

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