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Anchorage, AK Local Forecast Office

39NM NW Seguam Island AK

Marine Point Forecast

[NOTICE]

This Afternoon
High: 38 °F
N 20kt
9ft

Small Craft Advisory
Tonight
Low: 35 °F
N 20kt
6-8ft

Small Craft Advisory
Sunday
High: 37 °F
N 10kt
4-5ft
Sunday Night
Low: 36 °F
E 15kt
3-4ft
Monday
High: 38 °F
NE 20kt
4-5ft
Monday Night
Low: 36 °F
NNE 20kt
5-6ft
Tuesday
High: 38 °F
NE 15kt
5-6ft
Tuesday Night
Low: 36 °F
E 20kt
5ft
Wednesday
High: 40 °F
ESE 30kt
4-5ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:33 pm AKDT May 2, 2026
Forecast Valid: 5pm AKDT May 2, 2026-6pm AKDT May 9, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY TONIGHT...

Synopsis: A 1006 mb North Pacific low Sun morning moves to 150 n m SE of Sitkinak Island at 995 mb Mon afternoon. Its front moves to the Alaska Peninsula Sun morning and lingers through Mon afternoon. A 978 mb Kamchatka low moves to 230 nm SW of Shemya at 995 mb Sun evening. This low continues SE into the North Pacific through Mon afternoon.

This Afternoon

N wind around 20 kt. Mostly cloudy. Seas around 9 ft.

Tonight

N wind 15 to 20 kt. Mostly cloudy. Seas 6 to 8 ft.

Sunday

N wind 5 to 10 kt becoming ENE in the afternoon. Partly sunny. Seas 4 to 5 ft.

Sunday Night

E wind 10 to 15 kt. Mostly cloudy. Seas 3 to 4 ft.

Monday

NE wind 15 to 20 kt. Mostly cloudy. Seas 4 to 5 ft.

Monday Night

NNE wind 15 to 20 kt. Mostly cloudy. Seas 5 to 6 ft.

Tuesday

NE wind 10 to 15 kt. Partly sunny. Seas 5 to 6 ft.

Tuesday Night

E wind 15 to 20 kt, with gusts as high as 25 kt. Showers likely. Seas around 5 ft.

Wednesday

ESE wind 25 to 30 kt. Showers. Seas 4 to 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.