Satellite: Sentinel-2 cloudless 2016 by EOX (CC BY 4.0). Outline and points © OpenStreetMap contributors / Natural Earth. North up.
In numbers
22.8km²
Area
26km
Coastline
172m
Highest point
Mount Gusuku
4,037,177
People
29°C
Warmest sea
August
632km
To the mainland
When to go to Iejima
Best for the beach from May to July and from October to November.
The sea is warmest in August (29 °C) and coolest in February (21 °C). You can swim comfortably all year (21 °C or more).
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 within Ryukyu Islands
Iejima is an island in Japan. It covers 22.8 km², with 26 km of coastline. Its highest point, Mount Gusuku, rises to 172 m. About 4,037,177 people live on it. The nearest mainland is 632 km away.
Getting there
- Naha International Airport (OKA)nearest airport with scheduled flights · 60 km in a straight lineCar hire at OKA airport (Naha)Discover Cars · Affiliate link↗
- Ferries1 ferry terminals on the island
- 632 km from the mainlanddistance to the nearest continental coast
- From May to July and from October to Novemberbest 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 Iejima.
- 8beachesIe Beach, GI Beach and 6 more
- 4viewpointsIejima Lighthouse, Mid-slope on Mt. Gusuku, Waji Observation platform and 1 more
- 1ferry terminalsIe Port
- 1named peaksMt. Gusuku
- 3ruins and archaeological sites
- 5dive centresBxB and 4 more
- 1campsites
- 36hotels, guesthouses and apartments
- 14restaurants, 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.
The shape of the land.
On average the island stands 43 m above the sea. 100 % of it is below 200 m.
- 56 %0–50 m
- 44 %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.
5 km
All outlines drawn to the same scale (Natural Earth and OpenStreetMap).
Towns on the island
- Ie4,192 people
Month by month
The weather on the island.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Afternoon high (°C) | 19 | 20 | 20 | 22 | 25 | 27 | 29 | 30 | 29 | 26 | 24 | 21 |
| Night low (°C) | 17 | 18 | 18 | 21 | 23 | 26 | 28 | 28 | 28 | 25 | 22 | 19 |
| Sea (°C) | 22 | 21 | 21 | 22 | 24 | 26 | 29 | 29 | 28 | 27 | 25 | 23 |
| Rain (mm) | 69 | 59 | 94 | 140 | 220 | 311 | 141 | 179 | 191 | 127 | 87 | 72 |
| Wet days | 14 | 12 | 16 | 16 | 18 | 21 | 15 | 18 | 17 | 14 | 12 | 13 |
| Sun h/day | 2.4 | 2.9 | 3.7 | 4.3 | 4.9 | 6.0 | 8.7 | 8.0 | 6.8 | 5.5 | 3.9 | 2.7 |
| Wind (km/h) | 26 | 25 | 24 | 22 | 20 | 22 | 22 | 22 | 22 | 26 | 26 | 28 |
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 | ±0.0 | +0.4 | +0.8 | −0.4 | +0.1 | +0.5 | +0.4 | +0.7 | +0.2 | +0.6 | +0.6 | +0.6 |
| 2021 | +0.4 | +0.7 | +0.9 | +0.2 | +0.9 | +0.2 | −0.5 | −0.7 | +0.9 | +0.7 | ±0.0 | +0.1 |
| 2022 | −0.2 | +0.1 | +0.9 | +1.2 | +0.2 | −0.2 | ±0.0 | +1.0 | +0.5 | +0.6 | +0.5 | +0.1 |
| 2023 | ±0.0 | +0.3 | +0.5 | +0.7 | −0.2 | −0.3 | +0.2 | −0.6 | +0.7 | +0.8 | +0.5 | +0.5 |
| 2024 | +0.4 | +0.9 | +0.4 | +0.9 | +0.6 | −0.3 | +1.2 | +1.5 | +1.3 | +1.4 | +1.4 | +0.5 |
| 2025 | −0.2 | −0.7 | +0.4 | −0.4 | +0.1 | +0.9 | +0.1 | +0.4 | +1.6 | +2.3 | +1.4 | +0.6 |
+1 warmer than usual −1 cooler than usual
Photos
Seen by visitors.



Nearby
More islands nearby.
Okinawa
Okinoerabujima
Kume Island
Tokunoshima
Amami Ōshima
Kikai Island
Miyako Island
Minamidaitō IslandAbout these numbers
| Names, area, population | Wikidata (Q328533) · 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
Do you prefer beaches, lakes, mountains, waterfalls, islands, rivers or canyons?
Same idea, other landscapes: field atlases built on open data, month by month, in seven languages.