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Anchorage, AK Local Forecast Office

39NM NW Seguam Island AK

Marine Point Forecast

[NOTICE]

Tonight
Low: 35 °F
NNE 20kt
7ft
Tuesday
High: 38 °F
NNE 15kt
7ft
Tuesday Night
Low: 36 °F
E 15kt
6ft
Wednesday
High: 39 °F
E 15kt
4-5ft
Wednesday Night
Low: 39 °F
E 25kt
5-7ft
Thursday
High: 41 °F
E 25kt
7-8ft
Thursday Night
Low: 37 °F
NE 20kt
5-7ft
Friday
High: 40 °F
NNE 15kt
4-5ft
Friday Night
Low: 36 °F
N 15kt
4ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:22 pm AKDT May 4, 2026
Forecast Valid: 8pm AKDT May 4, 2026-6pm AKDT May 11, 2026

View Nearby Observations

Detailed Forecast

Synopsis: A 988 mb N Pacific low moves to 190 nm ESE of Chignik Mon afternoon before tracking northward over Kodiak Island into Mon night. A front moves over the western Aleutians Tue morning through Wed morning.

Tonight

NNE wind around 20 kt. Mostly cloudy. Seas around 7 ft.

Tuesday

NNE wind 10 to 15 kt. Mostly cloudy. Seas around 7 ft.

Tuesday Night

E wind 10 to 15 kt. Mostly cloudy. Seas around 6 ft.

Wednesday

E wind 10 to 15 kt. A chance of rain after 4pm. Seas 4 to 5 ft.

Wednesday Night

E wind around 25 kt, with gusts as high as 30 kt. Rain likely, mainly after 7pm. Seas 5 to 7 ft.

Thursday

E wind 20 to 25 kt. Rain likely, mainly before 10am. Seas 7 to 8 ft.

Thursday Night

NE wind 15 to 20 kt. A chance of rain showers, mixing with snow after 10pm, then gradually ending. Seas 5 to 7 ft.

Friday

NNE wind around 15 kt. Partly sunny. Seas 4 to 5 ft.

Friday Night

N wind 10 to 15 kt. Mostly cloudy. Seas around 4 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.