Japan
Satellite: Sentinel-2 cloudless 2016 by EOX (CC BY 4.0). Outline and points © OpenStreetMap contributors / Natural Earth. North up.
In numbers
23.2km²
Area
38km
Coastline
432m
Highest point
Mount Miyatsuka
2,400
People
27°C
Warmest sea
August
905km
To the mainland
When to go to Nii-jima
Best for the beach from July to October.
The sea is warmest in August (27 °C) and coolest in February (17 °C). Comfortable swimming (21 °C or more): from June to November.
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 Izu Ilands, Tokyo, Japan
Nii-jima is an volcanic island in Japan. It covers 23.2 km², with 38 km of coastline. Its highest point, Mount Miyatsuka, rises to 432 m. About 2,400 people live on it. The nearest mainland is 905 km away.
Getting there
- Miyakejima Airport (MYE)nearest airport with scheduled flights · 43 km in a straight lineCar hire at HND airport (Tokyo)Discover Cars · Affiliate link↗
- Ferries1 ferry terminals on the island
- 905 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 Nii-jima.
- 4beachesMaehama Beach, Wadahama Beach and 2 more
- 2viewpoints
- 3lighthouses
- 1ferry terminals
- 8named peaksMt. Miyatsuka, Mt. Omine, Mt. Tango and 5 more
- 1surf spots
- 2hotels, 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.
The shape of the land.
On average the island stands 131 m above the sea. 72 % of it is below 200 m.
- 35 %0–50 m
- 37 %50–200 m
- 28 %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).
Month by month
The weather on the island.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Afternoon high (°C) | 12 | 13 | 15 | 17 | 20 | 22 | 26 | 27 | 26 | 23 | 19 | 15 |
| Night low (°C) | 10 | 10 | 12 | 15 | 19 | 21 | 25 | 26 | 25 | 21 | 17 | 13 |
| Sea (°C) | 18 | 17 | 17 | 18 | 20 | 22 | 25 | 27 | 26 | 24 | 22 | 20 |
| Rain (mm) | 90 | 104 | 160 | 178 | 199 | 255 | 221 | 161 | 238 | 259 | 136 | 98 |
| Wet days | 7 | 9 | 13 | 13 | 14 | 16 | 16 | 15 | 17 | 15 | 12 | 9 |
| Sun h/day | 4.7 | 4.7 | 5.2 | 5.6 | 5.8 | 4.3 | 5.9 | 7.2 | 5.3 | 4.0 | 4.1 | 4.5 |
| Wind (km/h) | 30 | 28 | 28 | 26 | 22 | 21 | 21 | 19 | 23 | 26 | 26 | 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 | +1.8 | +2.3 | +1.3 | +0.7 | +0.3 | +1.6 | +0.4 | +1.5 | +1.7 | +1.1 | +1.4 | +2.3 |
| 2021 | +1.8 | +1.5 | +0.9 | +1.0 | +0.5 | +2.1 | +1.8 | +1.2 | +1.4 | +1.9 | +1.4 | +0.8 |
| 2022 | +1.2 | +2.0 | +1.4 | +1.0 | +1.3 | +1.3 | +1.4 | +1.2 | +2.0 | +1.3 | +1.9 | +1.5 |
| 2023 | +1.9 | +2.3 | +2.1 | +2.1 | +1.5 | +1.1 | +1.3 | +1.6 | +1.8 | +1.8 | +1.7 | +0.8 |
| 2024 | +2.9 | +2.3 | +1.0 | +1.6 | +1.3 | +1.7 | +2.0 | +3.0 | +2.6 | +2.8 | +2.9 | +1.7 |
| 2025 | +1.7 | +1.0 | +0.6 | +0.4 | +0.1 | +2.1 | +2.4 | +0.2 | +1.0 | +0.6 | −0.3 | +0.8 |
+1 warmer than usual −1 cooler than usual
Photos
Seen by visitors.
Nearby
More islands nearby.
About these numbers
| Names, area, population | Wikidata (Q1191108) · 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.
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