Vietnam
Satellite: Sentinel-2 cloudless 2016 by EOX (CC BY 4.0). Outline and points © OpenStreetMap contributors / Natural Earth. North up.
In numbers
51.5km²
Area
45km
Coastline
measured on a simplified outline
94m
Highest point
6,000
People
30°C
Warmest sea
May
78km
To the mainland
When to go to Côn Sơn Island
Best for the beach from January to March.
The sea is warmest in May (30 °C) and coolest in January (25 °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 of Con Dao district
Côn Sơn Island is an island in Vietnam. It covers 51.5 km², with 45 km of coastline. Its highest point rises to 94 m. About 6,000 people live on it. The nearest mainland is 78 km away.
Getting there
- Con Dao Airport (VCS)airport on the island, with scheduled flights
- 78 km from the mainlanddistance to the nearest continental coast
- From January to Marchbest months to go (from 30 years of averages)
Plan the trip
Ferries, stays and things to do
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On the island
What you find on Côn Sơn Island.
- 13beachesPlage secrète, Ong toine beach, Small Beach and 10 more
- 17viewpointsTrek - Checkpoint 5, Dam Tre Bay - Trek starting point, Trek - Checkpoint 3 - Highest point 143m and 14 more
- 8named peaksNúi Thánh Giá, Núi Nhà Bàn, Núi Chúa and 5 more
- 2waterfallsHoai Duong Falls, Secret Waterfall
- 1ruins and archaeological sitesBuildings of So Roy Plantation
- 1campsitesCAMPING
- 8hotels, guesthouses and apartments
- 6restaurants, 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 120 m above the sea. 73 % of it is below 200 m.
- 45 %0–50 m
- 28 %50–200 m
- 26 %200–500 m
- <1 %500–1,000 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
- Côn Đảo13,112 people
Month by month
The weather on the island.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Afternoon high (°C) | 25 | 26 | 27 | 28 | 29 | 29 | 29 | 29 | 28 | 28 | 28 | 26 |
| Night low (°C) | 25 | 25 | 26 | 28 | 29 | 28 | 28 | 28 | 28 | 28 | 27 | 26 |
| Sea (°C) | 25 | 25 | 27 | 29 | 30 | 29 | 29 | 29 | 29 | 29 | 28 | 26 |
| Rain (mm) | 26 | 9 | 27 | 51 | 161 | 191 | 207 | 186 | 252 | 238 | 188 | 79 |
| Wet days | 6 | 3 | 5 | 12 | 25 | 27 | 28 | 28 | 28 | 29 | 24 | 15 |
| Sun h/day | 7.0 | 8.5 | 8.8 | 9.4 | 7.3 | 6.1 | 5.6 | 5.9 | 5.5 | 5.6 | 6.0 | 5.7 |
| Wind (km/h) | 32 | 28 | 22 | 18 | 16 | 19 | 22 | 24 | 21 | 19 | 25 | 32 |
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 | +0.2 | ±0.0 | +0.2 | +0.5 | +0.4 | +0.8 | +1.1 | +0.8 | +1.1 | −0.1 | +0.4 | +0.2 |
| 2021 | −0.4 | −1.0 | −0.5 | +0.2 | +0.2 | +0.3 | +0.4 | +0.4 | +0.2 | +0.5 | +0.5 | +0.2 |
| 2022 | +0.6 | +0.7 | +0.3 | −0.3 | −0.1 | +0.7 | +0.3 | +0.4 | +0.5 | +0.1 | +0.2 | +0.4 |
| 2023 | +0.3 | +0.2 | −1.1 | +0.2 | +0.3 | −0.3 | ±0.0 | +0.3 | +0.2 | +1.1 | +1.3 | +0.7 |
| 2024 | +0.7 | +1.1 | +0.7 | +1.0 | +1.3 | +1.2 | +0.6 | +0.6 | +0.5 | +0.5 | +0.8 | +0.4 |
| 2025 | +0.2 | −0.2 | −0.4 | −0.6 | ±0.0 | −0.3 | −0.1 | +0.3 | ±0.0 | +0.6 | +0.6 | +0.5 |
+1 warmer than usual −1 cooler than usual
Photos
Seen by visitors.
Nearby
More islands nearby.
About these numbers
| Names, area, population | Wikidata (Q1866965) · CC0 |
|---|---|
| Outline | Natural Earth · public domain |
| 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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