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Anchorage, AK Local Forecast Office

39NM NW Seguam Island AK

Marine Point Forecast

[NOTICE]

This Afternoon
High: 39 °F
E 10kt
4ft
Tonight
Low: 37 °F
E 10kt
4ft
Saturday
High: 38 °F
NNE 10kt
3-4ft
Saturday Night
Low: 37 °F
Light Wind
3ft
Sunday
High: 40 °F
SSE 20kt
7ft
Sunday Night
Low: 38 °F
SE 25kt
6-8ft
Monday
High: 41 °F
SW 20kt
5ft
Monday Night
Low: 37 °F
WSW 20kt
6-7ft
Tuesday
High: 40 °F
WNW 30kt
9ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:35 am AKDT May 8, 2026
Forecast Valid: 2pm AKDT May 8, 2026-6pm AKDT May 14, 2026

View Nearby Observations

Detailed Forecast

Synopsis: A 1007 mb low roughly 160 nm NW of Adak drops southward into the North Pacific through Sat morning. A 978 mb Kamchatka low moves to 20 nm SW of Shemya Sun morning.

This Afternoon

E wind around 10 kt. A chance of rain before 4pm, then scattered showers after 4pm. Seas around 4 ft.

Tonight

E wind around 10 kt. Scattered showers before 10pm, then a chance of rain between 10pm and 4am, then scattered showers after 4am. Seas around 4 ft.

Saturday

NNE wind 5 to 10 kt. Scattered showers, mainly before 7am. Seas 3 to 4 ft.

Saturday Night

Variable winds 5 kt or less. Mostly cloudy. Seas around 3 ft.

Sunday

SSE wind 15 to 20 kt. Rain, mainly after 10am. Seas 4 ft building to 7 ft.

Sunday Night

SE wind 20 to 25 kt becoming WSW after midnight. Rain. Seas 6 to 8 ft.

Monday

SW wind around 20 kt, with gusts as high as 25 kt. Showers. Seas around 5 ft.

Monday Night

WSW wind around 20 kt. Showers. Seas 6 to 7 ft.

Tuesday

WNW wind 25 to 30 kt. Showers. Seas 6 ft building 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.