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Anchorage, AK Local Forecast Office

39NM NW Seguam Island AK

Marine Point Forecast

[NOTICE]

Today
High: 42 °F
NNE 25kt
12-13ft

Small Craft Advisory
Tonight
Low: 40 °F
NNE 20kt
12-13ft

Small Craft Advisory
Monday
High: 43 °F
NE 25kt
12-14ft

Small Craft Advisory
Monday Night
Low: 39 °F
N 35kt
25ft
Tuesday
High: 42 °F
N 35kt
26-27ft
Tuesday Night
Low: 37 °F
N 40kt
28-29ft
Wednesday
High: 41 °F
N 40kt⇓
33ft
Wednesday Night
Low: 37 °F
N 25kt
27ft
Thursday
High: 41 °F
N 20kt⇓
17ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 5:35 am AKST Nov 30, 2025
Forecast Valid: 8am AKST Nov 30, 2025-6pm AKST Dec 6, 2025

View Nearby Observations

Detailed Forecast

...GALE WARNING TODAY AND MONDAY...

Synopsis: Troughing stretches across the Bering through tonight. A 980 mb low develops 200 nm S of Nikolski Mon morning and moves to 190 nm SE of Saint Paul at 965 mb Tue morning.

Today

NNE wind 20 to 25 kt. Showers. Seas 12 to 13 ft.

Tonight

NNE wind around 20 kt. Showers. Seas 12 to 13 ft.

Monday

NE wind 20 to 25 kt, with gusts as high as 35 kt. Showers. Seas 12 to 14 ft.

Monday Night

N wind 25 to 35 kt, with gusts as high as 40 kt. Showers. Seas 16 ft building to 25 ft.

Tuesday

N wind around 35 kt, with gusts as high as 45 kt. Rain. Seas 26 to 27 ft.

Tuesday Night

N wind 35 to 40 kt, with gusts as high as 50 kt. Rain likely, mainly before 3am. Seas 28 to 29 ft.

Wednesday

N wind 35 to 40 kt decreasing to 25 to 30 kt in the afternoon. Winds could gust as high as 55 kt. A chance of rain. Seas 33 ft subsiding to 27 ft.

Wednesday Night

N wind 20 to 25 kt, with gusts as high as 45 kt. A chance of rain. Seas 27 ft subsiding to 17 ft.

Thursday

N wind 15 to 20 kt decreasing to 10 to 15 kt in the afternoon. A chance of rain. Seas 17 ft subsiding to 11 ft.

*Notices:

This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.