United States
Satellite: Sentinel-2 cloudless 2016 by EOX (CC BY 4.0). Outline and points © OpenStreetMap contributors / Natural Earth. North up.
In numbers
713km²
Area
451km
Coastline
1,196m
Highest point
Mount Moffett
316
People
9°C
Warmest sea
August
948km
To the mainland
When to go to Adak Island
Good all year round.
The sea is warmest in August (9 °C) and coolest in February (4 °C). The water never reaches 21 °C: bring a wetsuit.
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 Aleutians West Census Area, Alaska, United States
Adak Island is an island in United States. It covers 713 km², with 451 km of coastline. Its highest point, Mount Moffett, rises to 1,196 m. About 316 people live on it. The nearest mainland is 948 km away.
Getting there
- Adak Airport (ADK)airport on the island, with scheduled flightsCar hire at ANC airport (Anchorage)Discover Cars · Affiliate link↗
- 948 km from the mainlanddistance to the nearest continental coast
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 Adak Island.
- 6beachesNorth Beach, Kuluk Beach and 4 more
- 4viewpointsPalisades Overlook, West Palisades Overlook, Mid Palisades Overlook and 1 more
- 10named peaksMount Moffett, Mount Adagdak, Mount Vincennes and 7 more
- 1volcanoesMount Adagak
- 2ruins and archaeological sitesWrecked Boat, Adak SWMU 67 White Alice Radar Site
- 3restaurants, 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
Adak Island in our other atlases
Everything Coastya, Peakyas, Lakeyas and Cascadyas know about what lies inside Adak Island, each with its own numbers.
2lakesLakeyas
1waterfallCascadyas
Largest lake
8.3km²
Andrew Lake
according to Lakeyas
2 lakes
on Lakeyas, the lake atlas
- Andrew Lake8.3km²
- Lake Leone0.29km²
Lakeyas is coming soonOpen Lakeyas ↗
1 waterfalls
on Cascadyas, the waterfall atlas
- White Falls (busay sa Estados Unidos)
Cascadyas is coming soonOpen Cascadyas ↗
The shape of the land.
On average the island stands 173 m above the sea. 68 % of it is below 200 m.
- 19 %0–50 m
- 50 %50–200 m
- 28 %200–500 m
- 4 %500–1,000 m
- <1 %1,000–2,000 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.
20 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) | 2 | 2 | 2 | 4 | 5 | 7 | 9 | 10 | 10 | 7 | 5 | 3 |
| Night low (°C) | 0 | 1 | 1 | 2 | 4 | 6 | 8 | 9 | 8 | 6 | 3 | 1 |
| Sea (°C) | 4 | 4 | 4 | 4 | 5 | 6 | 8 | 9 | 9 | 7 | 6 | 5 |
| Rain (mm) | 82 | 92 | 92 | 68 | 65 | 67 | 104 | 112 | 96 | 101 | 102 | 104 |
| Wet days | 21 | 20 | 20 | 17 | 15 | 14 | 20 | 19 | 17 | 19 | 20 | 22 |
| Sun h/day | 1.2 | 1.9 | 3.2 | 4.2 | 3.7 | 3.3 | 2.9 | 2.8 | 3.4 | 3.0 | 1.5 | 1.0 |
| Wind (km/h) | 31 | 34 | 31 | 30 | 25 | 21 | 19 | 21 | 27 | 31 | 33 | 34 |
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 | +0.4 | +0.7 | +0.4 | +0.4 | +0.7 | +0.8 | −0.3 | −0.6 | +0.5 | +0.5 | +0.3 | +0.1 |
| 2021 | −0.1 | +0.4 | +0.1 | +0.2 | +0.2 | +0.6 | +0.6 | +1.6 | +1.0 | −0.6 | −0.2 | +0.1 |
| 2022 | +0.2 | +0.4 | +0.3 | +0.1 | +0.7 | ±0.0 | −0.4 | −0.9 | −0.5 | +0.2 | +0.6 | +1.0 |
| 2023 | +0.5 | +0.6 | +0.1 | ±0.0 | −0.1 | −0.3 | −0.2 | +0.3 | +0.5 | +0.5 | +0.5 | +0.5 |
| 2024 | +0.2 | +0.3 | −0.2 | −0.1 | −0.4 | −0.8 | −1.1 | −1.2 | −1.4 | −0.7 | −0.4 | +0.2 |
| 2025 | +0.4 | +0.6 | +0.3 | +0.5 | +0.4 | −0.1 | −0.5 | +0.1 | −0.6 | +0.3 | +0.3 | +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 (Q176381) · 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 | Lakeyas, Cascadyas — Wikidata · CC0; © OpenStreetMap contributors · ODbL; GeoNames · CC BY 4.0; HydroLAKES (Messager et al. 2016) · CC BY 4.0, LakeTEMP (Korver et al. 2024) · CC BY 4.0 |
Every figure is an average, an estimate or a count from a public dataset. Licences and methods: data sources.
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