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Juneau, AK Local Forecast Office

Cape Spencer AK

Marine Point Forecast

[NOTICE]

This Afternoon
High: 64 °F
NE 15kt
7ft

Small Craft Advisory
Tonight
Low: 52 °F
ENE 15kt
6ft
Wednesday
High: 59 °F
NE 10kt⇓
5ft
Wednesday Night
Low: 48 °F
Light Wind
4-5ft
Thursday
High: 52 °F
Light Wind
4-5ft
Thursday Night
Low: 48 °F
Light Wind
4-5ft
Friday
High: 52 °F
WSW 10kt
3-4ft
Friday Night
Low: 47 °F
SSW 10kt
3ft
Saturday
High: 52 °F
Light Wind
3ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 5:26 pm AKDT Jun 2, 2026
Forecast Valid: 5pm AKDT Jun 2, 2026-6pm AKDT Jun 9, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY THROUGH THIS EVENING...

Synopsis: Offshore flow is bringing breezy conditions for the Gulf of Alaska and the inner channels. A fairly weak low pressure system will approach our area, and it will lead to southerly winds up to 15 kts, and up to 3 foot seas in the inner channels. Behind the low pressure system, high pressure will redevelop Friday into Saturday.

This Afternoon

NE wind around 15 kt. Mostly sunny. Seas around 7 ft.

Tonight

ENE wind around 15 kt. Partly cloudy. Seas around 6 ft.

Wednesday

NE wind 5 to 10 kt becoming variable and less than 5 kt. A slight chance of showers after 4pm. Seas around 5 ft.

Wednesday Night

Variable winds 5 kt or less. A chance of showers after 7pm. Seas 4 to 5 ft.

Thursday

Variable winds 5 kt or less. Showers. Seas 4 to 5 ft.

Thursday Night

Variable winds 5 kt or less. Showers likely, mainly before 4am. Seas 4 to 5 ft.

Friday

WSW wind 5 to 10 kt. A chance of rain before 10am. Seas 3 to 4 ft.

Friday Night

SSW wind 5 to 10 kt. Cloudy. Seas around 3 ft.

Saturday

Variable winds 5 kt or less. Cloudy. 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.