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Anchorage, AK Local Forecast Office

20NM SSE Shumagin Islands AK

Marine Point Forecast

[NOTICE]

Overnight
Low: 34 °F
NNE 15kt
5ft
Tuesday
High: 38 °F
NNE 10kt
3-4ft
Tuesday Night
Low: 35 °F
NNW 15kt
3ft
Wednesday
High: 37 °F
NNW 25kt
4-5ft
Wednesday Night
Low: 34 °F
N 25kt
4ft
Thursday
High: 38 °F
N 20kt
2-3ft
Thursday Night
Low: 38 °F
NNE 15kt
2ft
Friday
High: 40 °F
NNE 20kt
2-3ft
Friday Night
Low: 37 °F
NNE 25kt
3-4ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 8:13 pm AKST Dec 8, 2025
Forecast Valid: 11pm AKST Dec 8, 2025-6pm AKST Dec 15, 2025

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

Synopsis: A strong high pressure system will build over the central Bering through Wed afternoon. A front will move into the far western Bering Tue afternoon and increase in strength through Wed afternoon. A 1007 mb low will develop in the western Gulf of Alaska Wed afternoon.

Overnight

NNE wind around 15 kt. Partly cloudy. Seas around 5 ft.

Tuesday

NNE wind around 10 kt becoming NNW in the afternoon. Sunny. Seas 3 to 4 ft.

Tuesday Night

NNW wind 10 to 15 kt. Mostly clear. Seas around 3 ft.

Wednesday

NNW wind 20 to 25 kt. Sunny. Seas 4 to 5 ft.

Wednesday Night

N wind 20 to 25 kt. Mostly clear. Seas around 4 ft.

Thursday

N wind 15 to 20 kt. Sunny. Seas 2 to 3 ft.

Thursday Night

NNE wind around 15 kt. Clear. Seas around 2 ft.

Friday

NNE wind 15 to 20 kt. Sunny. Seas 2 to 3 ft.

Friday Night

NNE wind 20 to 25 kt. Mostly clear. Seas 3 to 4 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.