For More Weather Information:

Anchorage, AK Local Forecast Office

39NM NW Seguam Island AK

Marine Point Forecast

[NOTICE]

This Afternoon
High: 41 °F
WNW 20kt
9ft

Small Craft Advisory
Tonight
Low: 38 °F
WNW 30kt
9-11ft

Small Craft Advisory
Wednesday
High: 42 °F
WNW 25kt
8-10ft

Small Craft Advisory
Wednesday Night
Low: 39 °F
W 10kt
5-6ft
Thursday
High: 43 °F
W 20kt
7ft
Thursday Night
Low: 40 °F
W 20kt
7-8ft
Friday
High: 43 °F
WSW 20kt
8-9ft
Friday Night
Low: 39 °F
W 10kt
6-8ft
Saturday
High: 42 °F
N 15kt
5ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:46 am AKDT May 26, 2026
Forecast Valid: 1pm AKDT May 26, 2026-6pm AKDT Jun 1, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

Synopsis: A 985 mb low 100 nm N of Nelson Lagoon continues to weaken to 993 mb as it moves onshore by this afternoon. A ridge builds over the Western Aleutians, reaching the Central Aleutians by Thu morning.

This Afternoon

WNW wind around 20 kt, with gusts as high as 30 kt. Isolated showers. Seas around 9 ft.

Tonight

WNW wind 25 to 30 kt. Cloudy, then gradually becoming partly cloudy. Seas 9 to 11 ft.

Wednesday

WNW wind 15 to 25 kt. Partly sunny. Seas 8 to 10 ft.

Wednesday Night

W wind around 10 kt becoming SSW after midnight. A chance of rain after 10pm. Seas 5 to 6 ft.

Thursday

W wind 15 to 20 kt. A chance of rain. Seas 4 ft building to 7 ft.

Thursday Night

W wind 15 to 20 kt. A chance of rain before 10pm, then a chance of rain after 1am. Seas 7 to 8 ft.

Friday

WSW wind 15 to 20 kt. A chance of showers. Seas 8 to 9 ft.

Friday Night

W wind around 10 kt becoming NNW in the evening. Winds could gust as high as 20 kt. A chance of showers. Seas 6 to 8 ft.

Saturday

N wind around 15 kt. Cloudy. 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.