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Anchorage, AK Local Forecast Office

39NM NW Seguam Island AK

Marine Point Forecast

[NOTICE]

Tuesday
High: 40 °F
SE 15kt
7-8ft

Small Craft Advisory
Tuesday Night
Low: 36 °F
SSE 25kt
6-7ft

Small Craft Advisory
Wednesday
High: 43 °F
SSE 25kt
6-8ft
Wednesday Night
Low: 38 °F
SSW 15kt
4-5ft
New Year's Day
High: 43 °F
ESE 15kt
4ft
Thursday Night
Low: 39 °F
S 15kt
3-5ft
Friday
High: 43 °F
S 20kt
3-5ft
Friday Night
Low: 38 °F
SSE 25kt
8ft
Saturday
High: 42 °F
SW 25kt
8-9ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 7:46 pm AKST Dec 29, 2025
Forecast Valid: 2am AKST Dec 30, 2025-6pm AKST Jan 5, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY THROUGH TUESDAY NIGHT...

Synopsis: A 981 mb Gulf low maintains strong winds across the Eastern Bering through Wed afternoon before weakening. A 974 mb North Pacific low moves to 180 nm W of Attu at 984 mb by Wed midday. Its front pushes into the Western and Central Aleutians from Mon afternoon through Wed afternoon.

Tuesday

E wind 10 to 15 kt becoming SE in the afternoon. Mostly sunny. Seas 7 to 8 ft.

Tuesday Night

SSE wind 15 to 25 kt. A chance of rain after 3am. Seas 6 to 7 ft.

Wednesday

SSE wind 15 to 25 kt, with gusts as high as 30 kt. Rain likely, mainly before noon. Seas 6 to 8 ft.

Wednesday Night

SSW wind 10 to 15 kt, with gusts as high as 30 kt. Mostly cloudy. Seas 4 to 5 ft.

New Year's Day

S wind 5 to 15 kt becoming ESE in the afternoon. Winds could gust as high as 20 kt. A chance of rain after noon. Seas around 4 ft.

Thursday Night

SE wind 10 to 15 kt becoming SW after midnight. Winds could gust as high as 25 kt. Rain likely, mainly after 3am. Seas 3 to 5 ft.

Friday

SW wind 15 to 20 kt becoming S in the afternoon. Winds could gust as high as 25 kt. Rain. Seas 3 to 5 ft.

Friday Night

SSE wind 15 to 25 kt. Rain. Seas 4 ft building to 8 ft.

Saturday

SW wind 15 to 25 kt. Rain. Seas 8 to 9 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.