Anchorage sea temperature today: 11°C – beach water temperature, Anchorage, United States
United States · Gulf of Alaska

Anchorage

Sea
51.8°F
Air
UV
Polar bears
Under 13°C
Climate · 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
Min
35
34
34
34
42
50
56
57
53
44
36
34
Avg
36
35
35
35
43
53
58
58
54
46
37
36
Max
37
36
35
37
45
56
59
59
55
47
38
37

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.