For More Weather Information:

Anchorage, AK Local Forecast Office

39NM NW Seguam Island AK

Marine Point Forecast

[NOTICE]

Today
High: 42 °F
SSE 25kt
6-7ft

Small Craft Advisory
Tonight
Low: 38 °F
SSW 10kt
5-6ft
Monday
High: 41 °F
W 15kt
4ft
Monday Night
Low: 37 °F
WSW 20kt
5-6ft
Tuesday
High: 39 °F
NW 20kt
5-6ft
Tuesday Night
Low: 37 °F
NW 15kt
5ft
Wednesday
High: 39 °F
N 15kt
5-7ft
Wednesday Night
Low: 36 °F
Light Wind
5ft
Thursday
High: 41 °F
S 15kt
5ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:00 am AKDT Apr 5, 2026
Forecast Valid: 5am AKDT Apr 5, 2026-6pm AKDT Apr 11, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY TODAY...

Synopsis: A 1001 mb low 200 nm NNE of Shemya remains mostly stationary through Sun afternoon as its front continues to sweep across the Aleutians. A 992 mb low moves to 100 nm E of Shemya Mon morning and merges with the first low. The new low moves to 140 nm NW of Adak at 992 mb Mon afternoon.

Today

SSE wind 20 to 25 kt, with gusts as high as 30 kt. Rain. Seas 6 to 7 ft.

Tonight

SSW wind around 10 kt becoming W in the evening. Rain, mainly before 1am. Seas 5 to 6 ft.

Monday

W wind around 15 kt becoming SSW in the afternoon. Showers likely, mainly after 1pm. Seas around 4 ft.

Monday Night

WSW wind 15 to 20 kt. Showers likely, mainly before 10pm. Seas 5 to 6 ft.

Tuesday

NW wind 15 to 20 kt. Scattered showers before 10am. Seas 5 to 6 ft.

Tuesday Night

NW wind around 15 kt. Rain and snow likely after 4am. Seas around 5 ft.

Wednesday

N wind 10 to 15 kt. Rain and snow likely before 10am. Seas 5 to 7 ft.

Wednesday Night

Variable winds 5 kt or less. Mostly cloudy. Seas around 5 ft.

Thursday

S wind around 15 kt. Rain likely. Seas around 5 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.