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Coldest beach in Alaska in August

653 coastal locations in Alaska ranked by their typical August sea temperature. State-wide average in August: 12.5°C.

Coldest in August

Barrow

3.3°C

State August average

12.5°C

across 653 coastal locations in Alaska

Vs annual mean

+5.1°C

above the year-round state average

What the Alaska water feels like in August

Water at this temperature is cold and will feel very cold initially, but the body will get used to it and longer swims are possible. Experienced swimmers can manage several hours of swimming, however hypothermia is still a real risk.

Alaska monthly average 3.9°C to 12.5°C
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  • Warmest month August 12.5°C
  • Coldest month March 3.9°C
  • Annual mean 7.4°C
  • Months above 20°C 0 of 12

Where August fits in the year

August sits inside the state pattern shown on the left. Browse a different month for a fresh ranking.

Alaska sea temperature map (live)

Today's reading at every Alaska beach we track. The list below uses the typical August mean from a decade of daily history.

Zoom in to see individual locations. Click a pin for water temperatures. View list →
°C -2 0 1 3 5 7 9 11 13 15 17 19 21 24 27 30 35

Top 50 coldest Alaska beaches in August

Sorted by typical August mean. Click any beach for the full location page.

# Location August mean
1 Adugak Island, Aleutian Islands, Alaska Alaska 9.1°C
2 Akutan Harbor, Akutan Island, Aleutian Islands, Alaska Alaska 9.1°C
3 Andrew Bay, Adak Island, Alaska Alaska 9.1°C
4 Broad Bight, Akutan Island, Aleutian Islands Alaska 9.1°C
5 Sweeper Cove, Adak Island Alaska 9.1°C
6 Otter Point, Umnak Island, Alaska Alaska 9.1°C
7 Three Arm Bay, Adak Island, Alaska Alaska 9.0°C
8 Unalga Bight, Adak Island, Alaska Alaska 9.0°C
9 Point Hope Alaska 9.0°C
10 Cape Chlanak, Kanaga Island, Alaska Alaska 9.0°C
11 Kanaga Bay, Kanaga Island, Alaska Alaska 9.0°C
12 Shoal Point, Kanaga Island, Alaska Alaska 8.9°C
13 Inanudak Bay, Umnak Island, Alaska Alaska 8.8°C
14 Okee Bay, Umnak Island, Alaska Alaska 8.8°C
15 Herbert Island, west side, Aleutian Islands, Alaska Alaska 8.8°C
16 Gertrude Cove, Kiska Island, Rat Islands, Alaska Alaska 8.7°C
17 Ulak Island, Delarof Islands, Alaska Alaska 8.7°C
18 Cape Chunu, Kanaga Island, Alaska Alaska 8.7°C
19 Kiska Harbor, Kiska Island, Rat Islands, Alaska Alaska 8.7°C
20 Constantine Harbor, Amchitka Island, Rat Islands, Alaska Alaska 8.6°C
21 Constantine Harbour Alaska 8.6°C
22 South Bight, Amchitka Island, Rat Islands, Alaska Alaska 8.6°C
23 Outside Lopp Lagoon Alaska 8.6°C
24 Finch Cove, Seguam Island, Aleutian Islands, Alaska Alaska 8.5°C
25 Hot Springs Bay, Tanaga Island, Alaska Alaska 8.5°C
Show 25 more ▸
26 Tanaga Bay, Tanaga Island, Alaska Alaska 8.5°C
27 Gareloi Island, Delarof Islands, Alaska Alaska 8.4°C
28 Lash Bay, Tanaga Island, Alaska Alaska 8.4°C
29 East Cove, Yunaska Island, Alaska Alaska 8.4°C
30 North side, Yunaska Island, Alaska Alaska 8.4°C
31 Applegate Cove, Chuginadak Island, Aleutian Islands, Alaska Alaska 8.2°C
32 Ogliuga Island (east coast), Delarof Islands, Alaska Alaska 8.2°C
33 Akeftapak, St. Lawrence Island Alaska 8.2°C
34 Moghoweyik River entrance, St. Lawrence Island, Alaska Alaska 8.2°C
35 Powooiliak Point, St. Lawrence Island, Alaska Alaska 8.0°C
36 Amukta Island, north side, Aleutian Islands, Alaska Alaska 8.0°C
37 St. Matthew Island, Bering Sea, Alaska Alaska 7.8°C
38 Fossil River entrance, St. Lawrence Island, Alaska Alaska 7.8°C
39 Savoonga, St. Lawrence Island Alaska 7.7°C
40 Northeast Cape, St. Lawrence Island Alaska 7.6°C
41 Maknik Lagoon entrance, St. Lawrence Island, Alaska Alaska 7.5°C
42 Point Barrow, Alaska Alaska 4.9°C
43 Point Barrow Alaska 4.9°C
44 Barrow (offshore) Alaska 4.8°C
45 Barter Island Alaska 4.3°C
46 Prudhoe Bay #2 Alaska 4.2°C
47 Cross Island (Dinkum Sands) Alaska 4.2°C
48 Flaxman Island Alaska 3.9°C
49 Prudhoe Bay Alaska 3.9°C
50 Barrow Alaska 3.3°C

Warmest 10 in Alaska in August

Same data flipped. The warmest spots in the state for this month.

# Location August mean
1 Morakas Point, Naknek River, Alaska Alaska 15.5°C
2 Naknek River entrance, Alaska Alaska 15.5°C
3 Omakstalia Point, Naknek River, Alaska Alaska 15.5°C
4 Dewey Anchorage, Etolin Island, Alaska Alaska 15.4°C
5 Entrance, Kasaan Bay, Alaska Alaska 15.4°C
6 Hadley, Lyman Anchorage, Alaska Alaska 15.4°C
7 Karta Bay, Kasaan Bay, Alaska Alaska 15.4°C
8 Kasaan, Kasaan Bay, Alaska Alaska 15.4°C
9 Lindeman Cove, Kasaan Bay Alaska 15.4°C
10 Magnetic Point, Union Bay, Earnest Sound Alaska 15.4°C

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