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Yonaguni

29.0 km² of land in the East China Sea.

When to go

Yonaguni seen from space, cut out from the sea (Sentinel-2)
Yonakuni
N 2 km

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

In numbers

29.0km²

Area

39km

Coastline

231m

Highest point

Mount Urabu

1,491

People

29°C

Warmest sea

July

347km

To the mainland

When to go to Yonaguni

Best for the beach from April to August.

The sea is warmest in July (29 °C) and coolest in February (24 °C). You can swim comfortably all year (21 °C or more).

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 Yaeyama Islands, Okinawa, Japan

Yonaguni is an island in Japan. It covers 29.0 km², with 39 km of coastline. Its highest point, Mount Urabu, rises to 231 m. About 1,491 people live on it. The nearest mainland is 347 km away.

Read more on Wikipedia

Getting there

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 Yonaguni.

  • 12beachesDannu Beach, Nanta Beach, Kataburu Beach and 9 more
  • 9viewpoints
  • 2lighthousesIrizaki Ligthhouse, Agarizaki Lighthouse
  • 4named peaksMt. Urabu, Mt. Kubura, Mt. Inbi and 1 more
  • 2ruins and archaeological sitesJinmen-iwa
  • 6hotels, guesthouses and apartments
  • 5restaurants, 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

Yonaguni in our other atlases

Everything Coastya, Peakyas, Lakeyas and Cascadyas know about what lies inside Yonaguni, each with its own numbers.

  • 1mountainPeakyas
  • Highest point

    231m

    Mount Urabu

    according to Peakyas

1 mountains

on Peakyas, the mountain atlas

  1. Mount Urabu231m

Open Peakyas ↗

The shape of the land.

On average the island stands 51 m above the sea. 100 % of it is below 200 m.

  • 60 %0–50 m
  • 40 %50–200 m
  • <1 %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.

Yonaguni29 km²
Manhattan54 km²
Santorini76 km²

5 km

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

Towns on the island

  • Yonakuni1,684 people

Month by month

The weather on the island.

JanFebMarAprMayJunJulAugSepOctNovDec
Afternoon high (°C)212222242728292929272522
Night low (°C)192021232628292928262421
Sea (°C)242424252728292928272625
Rain (mm)584775104181206143214206999265
Wet days161417172022202219161716
Sun h/day1.62.32.83.85.36.98.87.66.45.03.01.8
Wind (km/h)292826242124242225292830

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.

JanFebMarAprMayJunJulAugSepOctNovDec
2020+0.1+0.9+0.2+0.1−0.2+1.2+0.5+0.7+0.7+0.8+0.4−0.5
2021−0.7+0.2+0.7+0.4+1.2+1.4+0.3±0.0+0.9+0.8+0.5+1.1
2022+0.7+0.6+0.6+0.4+0.6+0.8+0.8+1.3+0.4+0.3+0.7+1.0
2023+0.8+0.4+0.4+0.4−0.3−0.2+0.4+0.4+0.1+0.4+0.7+0.6
2024+1.3+0.8−0.2+1.8+1.2+1.2+1.3+1.2+1.5+1.2+0.8+0.9
2025±0.0−0.3+0.2+0.3+0.9+0.6±0.0+0.3+1.1+1.5+1.0+1.2

+1 warmer than usual −1 cooler than usual

Photos

Seen by visitors.

Stele on the Yonaguni Island 2023-07-04
Unknown author Unknown author · Attribution
Higawahama in Yonaguni
Yasu ( talk ) · CC BY-SA 3.0
Nanta Beach and Port of Sonai, Yonaguni
Yasu ( talk ) · CC BY-SA 3.0
Yonaguni Island coast
sota-k · CC BY-SA 2.0

About these numbers

Names, area, populationWikidata (Q220701) · CC0
Outline© OpenStreetMap contributors · ODbL
Sea temperatureNOAA OISST v2.1 · 1991–2020
ClimateNASA POWER · 1991–2020
Relief, 3D modelCopernicus DEM GLO-30 · © DLR e.V., © Airbus Defence and Space GmbH, Copernicus/ESA
Beaches, ports, lighthouses, trails© OpenStreetMap contributors · ODbL
TownsGeoNames · CC BY 4.0
ImagesEOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons
Beaches, mountains, lakes and waterfallsPeakyas — Wikidata · CC0; © OpenStreetMap contributors · ODbL; GeoNames · CC BY 4.0

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.

beachesCoastyaFind your beach: sea temperature, sun and swimming month by month.Visit
lakesLakeyasEvery lake on Earth: water temperature, ice, depth and the shore.Coming soonVisit
mountainsPeakyasEvery summit in 3D: summit weather, the 0 °C line, huts and trails.Visit
waterfallsCascadyasEvery waterfall: height, flow month by month and when it roars.Coming soonVisit
islandsIslandyasEvery island from the sea up: size, sea temperature, ferries and 3D.You are here
riversRiveryasEvery river from source to sea: the journey, the flow and the basin in numbers.Visit canyonsCanyonyasEvery canyon cut to scale: depth to the floor, rim and floor temperatures, trails and viewpoints.Visit