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Anchorage, AK Local Forecast Office

20NM SSE Shumagin Islands AK

Marine Point Forecast

[NOTICE]

Tonight
Low: 44 °F
ESE 15kt
6-7ft
Sunday
High: 45 °F
ESE 15kt
4-5ft
Sunday Night
Low: 44 °F
SW 20kt
4-6ft
Monday
High: 45 °F
SE 20kt
5-6ft
Monday Night
Low: 45 °F
ESE 30kt
9ft
Tuesday
High: 46 °F
S 25kt
9-11ft
Tuesday Night
Low: 42 °F
S 20kt
9-11ft
Wednesday
High: 45 °F
S 20kt
7-9ft
Wednesday Night
Low: 40 °F
SSW 15kt
5-7ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:12 pm AKST Nov 29, 2025
Forecast Valid: 8pm AKST Nov 29, 2025-6pm AKST Dec 6, 2025

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY THROUGH SUNDAY NIGHT...

Synopsis: A large 965 mb low 360 nm SE of Atka moves to 155 SE of Atka at 980 mb and becomes elongated by Sun afternoon. The low continues to 250 nm S of Unalaska and becomes a complex of centers with the strongest near 965 mb by Mon afternoon. Multiple fronts move into the Bering through Mon afternoon.

Tonight

ESE wind around 15 kt. Rain likely, mainly between 9pm and 3am. Areas of fog after 9pm. Seas 6 to 7 ft.

Sunday

ESE wind 10 to 15 kt. Rain likely, mainly before 9am. Areas of fog before noon. Seas 4 to 5 ft.

Sunday Night

SE wind 10 to 20 kt becoming SW after midnight. Showers likely, mainly before 9pm. Seas 4 to 6 ft.

Monday

SSW wind 15 to 20 kt becoming SE in the afternoon. Showers likely, mainly between 9am and 3pm. Seas 5 to 6 ft.

Monday Night

ESE wind 25 to 30 kt becoming SSE after midnight. Rain, mainly before 3am, then a chance of showers after 3am. Seas 6 ft building to 9 ft.

Tuesday

S wind 20 to 25 kt, with gusts as high as 45 kt. A chance of rain. Seas 9 to 11 ft.

Tuesday Night

S wind around 20 kt, with gusts as high as 30 kt. A chance of rain. Seas 9 to 11 ft.

Wednesday

S wind 15 to 20 kt, with gusts as high as 25 kt. A chance of rain. Seas 7 to 9 ft.

Wednesday Night

SSW wind 10 to 15 kt. A chance of rain. Seas 5 to 7 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.