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New: NWS Anchorage will beginning issuing Heat Advisories on or about June 9, 2026.

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39NM NW Seguam Island AK

[NOTICE]

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Last Update: 8:21 pm AKDT Jun 18, 2026
Forecast Valid: 9pm AKDT Jun 18, 2026-6pm AKDT Jun 25, 2026

Synopsis: A front from a North Pacific low slowly east moves over the western Aleutians through Sat afternoon.

Tonight

ESE wind around 10 kt. Areas of fog. Seas around 2 ft.

Juneteenth

Variable winds 5 kt or less. Areas of fog. Seas around 2 ft.

Friday Night

Variable winds 5 kt or less. Areas of fog. Seas 1 to 2 ft.

Saturday

Variable winds 5 kt or less. Areas of fog. Seas around 1 ft.

Saturday Night

Variable winds 5 kt or less. Areas of fog before 10pm. Seas around 2 ft.

Sunday

Variable winds 5 kt or less. Partly sunny. Seas around 2 ft.

Sunday Night

E wind 10 to 15 kt. Mostly cloudy. Seas around 2 ft.

Monday

E wind 15 to 20 kt. Mostly cloudy. Seas 2 to 3 ft.

Monday Night

E wind 15 to 20 kt. A chance of showers. Seas around 3 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.

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