For More Weather Information:

Anchorage, AK Local Forecast Office

34NM ESE Seguam Island AK

Marine Point Forecast

[NOTICE]

Today
High: 42 °F
N 35kt
21-22ft

Small Craft Advisory
Tonight
Low: 39 °F
N 35kt
21ft

Small Craft Advisory
Thursday
High: 41 °F
N 25kt
15ft

Small Craft Advisory
Thursday Night
Low: 39 °F
N 15kt
10ft
Friday
High: 41 °F
Light Wind
5-7ft
Friday Night
Low: 38 °F
NNW 10kt
5-7ft
Saturday
High: 41 °F
N 15kt
8-9ft
Saturday Night
Low: 32 °F
⇑NNE 25kt
9-10ft
Sunday
High: 36 °F
N 30kt
15ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:26 am AKST Dec 3, 2025
Forecast Valid: 6am AKST Dec 3, 2025-6pm AKST Dec 9, 2025

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

Synopsis: A 980 mb low 80 nm S of Unalaska rotates to 100 nm S of Cold Bay at 1001 mb by Thu morning, then reverses course to 50 nm S of Unalaska and dissipates by Fri morning. The front of a Kamchatka low moves over Shemya Friday morning.

Today

N wind 30 to 35 kt. Showers likely, mainly before noon. Seas 21 to 22 ft.

Tonight

N wind 25 to 35 kt. A chance of showers. Seas 21 ft subsiding to 17 ft.

Thursday

N wind 20 to 25 kt, with gusts as high as 35 kt. A slight chance of showers. Seas 15 ft subsiding to 11 ft.

Thursday Night

N wind 5 to 15 kt, with gusts as high as 20 kt. A chance of showers after 9pm. Seas 10 ft subsiding to 7 ft.

Friday

Variable winds 5 kt or less. A chance of showers after 9am. Seas 5 to 7 ft.

Friday Night

E wind 5 to 10 kt becoming NNW after midnight. A chance of showers before 3am. Seas 5 to 7 ft.

Saturday

N wind 10 to 15 kt. Rain likely, mainly after 3pm. Seas 8 to 9 ft.

Saturday Night

NNE wind 15 to 20 kt increasing to 20 to 25 kt after midnight. Rain likely before 3am, then a chance of rain and snow. Seas 9 to 10 ft.

Sunday

N wind 25 to 30 kt. Rain and snow likely, mainly after 3pm. Seas 10 ft building to 15 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.