Satellite: Sentinel-2 cloudless 2016 by EOX (CC BY 4.0). Outline and points © OpenStreetMap contributors / Natural Earth. North up.
In numbers
134km²
Area
196km
Coastline
213m
Highest point
Mount Takenotsuji
28,941
People
27°C
Warmest sea
August
143km
To the mainland
When to go to Iki Island
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.
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
Iki Island is an island in Japan. It covers 134 km², with 196 km of coastline. Its highest point, Mount Takenotsuji, rises to 213 m. About 28,941 people live on it. The nearest mainland is 143 km away.
Getting there
- Iki Airport (IKI)airport on the island, with scheduled flightsCar hire at FUK airport (Fukuoka)Discover Cars · Affiliate link↗
- FerriesVienus;Ferry Chikushi, Vienus
- 143 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 Iki Island.
- 20beaches
- 3viewpoints
- 6lighthouses
- 6ferry terminalsKounoura Port Perry Terminal and 5 more
- 1marinas
- 15named peaksMt. Takenotsuji and 14 more
- 1campsitesFree campsite with shower and toilet
- 9hotels, guesthouses and apartments
- 12restaurants, 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
Iki Island in our other atlases
Everything Coastya, Peakyas, Lakeyas and Cascadyas know about what lies inside Iki Island, each with its own numbers.
1beachCoastya
1mountainPeakyas
1waterfallCascadyas
Highest point
213m
Mount Takenotsuji
according to Peakyas
Beach with the warmest sea
27.2°C
Hansei Wan
sea in the warmest month · according to Coastya
1 waterfalls
on Cascadyas, the waterfall atlas
- Abono Taki
Cascadyas is coming soonOpen Cascadyas ↗
The shape of the land.
On average the island stands 54 m above the sea. 100 % of it is below 200 m.
- 49 %0–50 m
- 51 %50–200 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.
10 km
All outlines drawn to the same scale (Natural Earth and OpenStreetMap).
Towns on the island
- Iki30,352 people
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 | 16 | 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 | +0.8 | +0.9 | +0.7 | +0.1 | +0.1 | +1.1 | −0.3 | +0.8 | +0.2 | −0.6 | +0.5 | +0.4 |
| 2021 | +0.6 | +1.4 | +1.2 | +1.5 | +1.1 | +1.8 | +1.4 | +0.3 | +0.8 | +2.2 | +0.3 | +0.3 |
| 2022 | −0.1 | −0.6 | +0.4 | +1.3 | +1.1 | +0.7 | +2.0 | +1.7 | +1.0 | +0.5 | ±0.0 | +0.4 |
| 2023 | ±0.0 | +0.3 | +1.5 | +1.5 | +0.7 | +1.4 | +1.4 | +0.6 | +1.4 | +0.6 | +0.9 | +0.8 |
| 2024 | +0.1 | +0.2 | +0.5 | +1.3 | +1.1 | +1.1 | +1.1 | +2.6 | +2.6 | +1.5 | +0.6 | −0.2 |
| 2025 | −0.6 | −1.1 | −0.8 | −0.3 | −0.4 | +0.3 | +2.0 | +1.9 | +3.1 | +2.3 | +1.2 | +0.7 |
+1 warmer than usual −1 cooler than usual
Photos
Seen by visitors.
Nearby
More islands nearby.
Hirado Island
Japan164 km²535 m49 km away
Tsushima IslandJapan694 km²649 m79 km away
OkinoshimaJapan0.94 km²244 m63 km away
KyushuJapan36,782 km²1,791 m148 km away
Hashima IslandJapan0.07 km²32 m129 km away
Geojedo
South Korea386 km²580 m156 km away
Nagashima IslandJapan91 km²404 m186 km away
ItsukushimaJapan30 km²535 m245 km awayAbout these numbers
| Names, area, population | Wikidata (Q494914) · 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, Cascadyas — 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.
The family
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