
United States · Gulf of Alaska
Anchorage
Sea
51.8°F
Air
–
UV
–
Polar bears
Under 13°C
More like this
All beaches · United StatesClimate · monthly averages
Sea temperature by month
5-year averages (2021–2025). Min/Max are typical daily lows and highs, not record extremes.
32°F
36°F
39°F
43°F
46°F
50°F
54°F
57°F
61°F
64°F
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
MinMin °F
3535.1
3434.2
3434.4
3434.2
4241.6
5050.1
5655.8
5756.9
5353.2
4444.5
3636.3
3434.3
AvgAvg °F
3636.1
3535.3
3534.8
3535.2
4343.4
5352.8
5857.5
5858.3
5453.7
4645.5
3737.1
3635.6
MaxMax °F
3736.8
3635.9
3535.2
3736.6
4545.2
5655.9
5959.0
5959.3
5554.5
4747.2
3837.9
3737.0
Warmest in August (58.3°F). Coldest in March (34.8°F). Rarely comfortable for swimming.
About Anchorage
Anchorage sits on Cook Inlet's eastern arm, with the 4,000-metre peaks of the Chugach Mountains rising directly behind the city and the Turnagain Arm carrying one of the world's largest tidal bores – a six-to-ten-foot wall of water that local surfers ride twice daily. The Tony Knowles Coastal Trail traces eighteen kilometres of shoreline past Earthquake Park and Point Woronzof, with beluga whales surfacing offshore. Swimming is not the point here, as the water peaks at only 10–12 °C in August, with Ted Stevens airport fifteen minutes from downtown.



