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Anchorage, AK Local Forecast Office

39NM NW Seguam Island AK

Marine Point Forecast

[NOTICE]

Tonight
Low: 39 °F
E 30kt
7ft

Small Craft Advisory
Thursday
High: 41 °F
E 20kt
6ft
Thursday Night
Low: 37 °F
E 15kt
5-6ft
Friday
High: 40 °F
ENE 10kt
4ft
Friday Night
Low: 36 °F
E 10kt
3-4ft
Saturday
High: 40 °F
ENE 10kt
3ft
Saturday Night
Low: 36 °F
ESE 10kt
3ft
Sunday
High: 41 °F
SSE 20kt
3ft
Sunday Night
Low: 38 °F
SSE 25kt
5ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 8:05 pm AKDT May 6, 2026
Forecast Valid: 9pm AKDT May 6, 2026-6pm AKDT May 13, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

Synopsis: A front stalls along the Aleutian Chain this afternoon and dissipates through Thu morning. A 1003 mb low 185 nm S of Atka remains nearly stationary before continuing southeastward to the North Pacific through Thu afternoon.

Tonight

E wind 25 to 30 kt. Rain, mainly after 10pm. Seas around 7 ft.

Thursday

E wind around 20 kt. Rain likely, mainly before 1pm. Seas around 6 ft.

Thursday Night

E wind around 15 kt, with gusts as high as 20 kt. A chance of rain. Seas 5 to 6 ft.

Friday

ENE wind around 10 kt. A chance of rain before 4pm. Seas around 4 ft.

Friday Night

E wind around 10 kt. A chance of rain between 10pm and 4am, then a chance of showers after 4am. Seas 3 to 4 ft.

Saturday

ENE wind around 10 kt. A chance of showers before 10am. Seas around 3 ft.

Saturday Night

ENE wind 5 to 10 kt becoming ESE in the evening. Showers likely after 4am. Seas around 3 ft.

Sunday

SSE wind 10 to 20 kt, with gusts as high as 25 kt. Showers. Seas around 3 ft.

Sunday Night

SSE wind around 25 kt becoming SW in the evening. Winds could gust as high as 35 kt. Showers. 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.