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United States United StatesIsland

Afognak

1,822 km² rising to 707 m out of the Gulf of Alaska.

When to go

Afognak seen from space, cut out from the sea (Sentinel-2)
N 10 km

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

In numbers

1,822km²

Area

820km

Coastline

707m

Highest point

169

People

12°C

Warmest sea

August

28km

To the mainland

When to go to Afognak

Good all year round.

The sea is warmest in August (12 °C) and coolest in March (4 °C). The water never reaches 21 °C: bring a wetsuit.

Sea temperature (the water level) Air: night low to afternoon high Wet days

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 the United States of America

Afognak is an island in United States. It covers 1,822 km², with 820 km of coastline. Its highest point rises to 707 m. About 169 people live on it. The nearest mainland is 28 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 Afognak.

  • 12named peaksRed Peak, Cloud Peak, Afognak Mountain and 9 more

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

Afognak in our other atlases

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

  • 10lakesLakeyas
  • Largest lake

    5.7km²

    Afognak Lake

    according to Lakeyas

  • Warmest lake

    19.1°C

    Gretchen Lake

    surface water, warmest month · according to Lakeyas

10 lakes

on Lakeyas, the lake atlas

  1. Afognak Lake5.7km²
  2. Laura Lake3.8km²
  3. Hidden Lake1.9km²
  4. Portage Lake1.6km²
  5. Big Kitoi Lake1.5km²
  6. Upper Malina Lake1.2km²
  7. Lower Malina Lake0.66km²
  8. Lake A B Schwartz0.53km²

2 more on LakeyasLakeyas is coming soonOpen Lakeyas ↗

The shape of the land.

On average the island stands 178 m above the sea. 64 % of it is below 200 m.

  • 14 %0–50 m
  • 50 %50–200 m
  • 34 %200–500 m
  • 2 %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.

Afognak1,822 km²
Long Island3,529 km²
Tenerife2,038 km²

50 km

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

Month by month

The weather on the island.

JanFebMarAprMayJunJulAugSepOctNovDec
Afternoon high (°C)1225912151512832
Night low (°C)-2-2-21581111840-1
Sea (°C)554468111210876
Rain (mm)1261058397958685101123132119142
Wet days181615181616141517171718
Sun h/day0.71.84.35.56.36.96.55.84.32.71.30.3
Wind (km/h)262524221815141620232626

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

+1 warmer than usual −1 cooler than usual

About these numbers

Names, area, populationWikidata (Q279794) · 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 waterfallsLakeyas — 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.

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.Coming soonVisit