United States
Satellite: Sentinel-2 cloudless 2016 by EOX (CC BY 4.0). Outline and points © OpenStreetMap contributors / Natural Earth. North up.
In numbers
4,119km²
Area
360km
Coastline
measured on a simplified outline
2,857m
Highest point
Mount Shishaldin
64
People
10°C
Warmest sea
August
3km
To the mainland
When to go to Unimak Island
Good all year round.
The sea is warmest in August (10 °C) and coolest in March (3 °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 East Borough, Alaska, United States
Unimak Island is an island in United States. It covers 4,119 km², with 360 km of coastline. Its highest point, Mount Shishaldin, rises to 2,857 m. About 64 people live on it. The nearest mainland is 3 km away.
Getting there
- Cold Bay Airport (CDB)nearest airport with scheduled flights · 105 km in a straight lineCar hire at ANC airport (Anchorage)Discover Cars · Affiliate link↗
- 3 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 Unimak Island.
- 11named peaksEickelberg Peak, Tugamak Range, Ikatok Peak and 8 more
- 8volcanoesShishaldin Volcano, Ragged Jack, Pogromni Volcano and 5 more
- 2castles and forts
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
Unimak Island in our other atlases
Everything Coastya, Peakyas, Lakeyas and Cascadyas know about what lies inside Unimak Island, each with its own numbers.
3beaches and covesCoastya
1lakeLakeyas
Largest lake
4.0km²
Shishkof Pond
according to Lakeyas
Warmest lake
18.1°C
Shishkof Pond
surface water, warmest month · according to Lakeyas
Beach with the warmest sea
10.3°C
Coroners Cove (historical)
sea in the warmest month · according to Coastya
3 beaches
on Coastya, the beach atlas
- Oksenof Beach9.8°C
- Airplane Flats9.5°C
- Coroners Cove (historical)cove10.3°C
1 lakes
on Lakeyas, the lake atlas
- Shishkof Pond4.0km²
Lakeyas is coming soonOpen Lakeyas ↗
The shape of the land.
On average the island stands 254 m above the sea. 62 % of it is below 200 m.
- 28 %0–50 m
- 34 %50–200 m
- 23 %200–500 m
- 12 %500–1,000 m
- 4 %1,000–2,000 m
- <1 %> 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.
100 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) | 1 | 2 | 1 | 3 | 5 | 8 | 11 | 11 | 10 | 7 | 4 | 2 |
| Night low (°C) | -1 | -1 | -2 | 0 | 3 | 6 | 8 | 9 | 8 | 5 | 2 | 0 |
| Sea (°C) | 4 | 3 | 3 | 3 | 5 | 7 | 9 | 10 | 10 | 8 | 7 | 5 |
| Rain (mm) | 85 | 81 | 72 | 72 | 72 | 66 | 86 | 104 | 116 | 118 | 110 | 107 |
| Wet days | 21 | 19 | 19 | 18 | 18 | 18 | 20 | 21 | 22 | 24 | 23 | 24 |
| Sun h/day | 0.8 | 1.9 | 4.0 | 4.6 | 5.4 | 4.7 | 3.5 | 3.0 | 3.2 | 2.4 | 1.0 | 0.5 |
| Wind (km/h) | 28 | 28 | 27 | 26 | 21 | 18 | 17 | 19 | 25 | 29 | 31 | 29 |
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 | +0.5 | +0.2 | +0.2 | +0.8 | +1.2 | +0.9 | +1.3 | +0.7 | −0.3 | +0.2 | +0.4 | +0.3 |
| 2021 | +0.6 | +1.3 | +1.1 | +1.2 | +1.0 | +0.2 | +0.5 | +0.4 | +0.3 | −0.8 | −1.4 | −1.4 |
| 2022 | −0.9 | −0.5 | +0.1 | −0.4 | −0.1 | +0.1 | −0.6 | −0.9 | −0.5 | −0.4 | −0.3 | +0.3 |
| 2023 | +0.7 | +1.1 | +0.6 | +0.2 | −0.1 | −0.1 | −0.5 | −0.1 | −0.2 | −0.1 | +0.7 | +0.2 |
| 2024 | +0.3 | +0.1 | −0.1 | ±0.0 | −0.2 | −0.6 | −0.9 | −1.1 | −0.8 | −0.7 | −0.3 | +0.4 |
| 2025 | +1.0 | +1.2 | +0.9 | +0.5 | +0.5 | ±0.0 | ±0.0 | +1.2 | +0.6 | +0.3 | +0.3 | +0.2 |
+1 warmer than usual −1 cooler than usual
Photos
Seen by visitors.
About these numbers
| Names, area, population | Wikidata (Q375615) · 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 |
| Beaches, mountains, lakes and waterfalls | Coastya, Lakeyas — Wikidata · CC0; © OpenStreetMap contributors · ODbL; GeoNames · CC BY 4.0; NOAA OISST; 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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