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Anchorage, AK Local Forecast Office

39NM NW Seguam Island AK

Marine Point Forecast

[NOTICE]

Tonight
Low: 33 °F
E 15kt
3ft
Friday
High: 36 °F
E 10kt
2ft
Friday Night
Low: 34 °F
SE 10kt
2ft
Saturday
High: 39 °F
SE 20kt
3-4ft
Saturday Night
Low: 36 °F
SE 20kt
5ft
Sunday
High: 40 °F
SE 20kt
5-6ft
Sunday Night
Low: 37 °F
ESE 30kt
6ft
Monday
High: 39 °F
ENE 30kt
7-8ft
Monday Night
Low: 35 °F
ENE 25kt
10-11ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:10 pm AKDT Apr 2, 2026
Forecast Valid: 8pm AKDT Apr 2, 2026-6pm AKDT Apr 9, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY TONIGHT...

Synopsis: A 1003 mb Kamchatka low 220 nm SW of Shemya will move SE and merge with a low 115 nm SW of Amchitka. The new low will dive SE towards the N Pacific and weaken to 1015 mb by Friday afternoon. A 992 mb N Pacific low will move into the SW Bering by Sat afternoon.

Tonight

E wind 10 to 15 kt. Partly cloudy. Seas around 3 ft.

Friday

E wind around 10 kt. Mostly sunny. Seas around 2 ft.

Friday Night

SE wind around 10 kt. Partly cloudy. Seas around 2 ft.

Saturday

SE wind 15 to 20 kt. Mostly cloudy. Seas 3 to 4 ft.

Saturday Night

SE wind around 20 kt, with gusts as high as 25 kt. Cloudy. Seas around 5 ft.

Sunday

SE wind around 20 kt. Cloudy. Seas 5 to 6 ft.

Sunday Night

ESE wind 25 to 30 kt. Rain. Seas around 6 ft.

Monday

ENE wind around 30 kt. Rain. Seas 7 to 8 ft.

Monday Night

ENE wind around 25 kt, with gusts as high as 30 kt. Rain. Seas 10 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.