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Juneau, AK Local Forecast Office

Cape Spencer AK

Marine Point Forecast

[NOTICE]

This Afternoon
High: 46 °F
S 15kt
7ft

Small Craft Advisory
Tonight
Low: 42 °F
E 20kt
6-7ft

Small Craft Advisory
Wednesday
High: 46 °F
ENE 20kt⇓
7ft
Wednesday Night
Low: 41 °F
⇑W 15kt
6ft
Thursday
High: 45 °F
W 10kt
5-6ft
Thursday Night
Low: 37 °F
NE 15kt
5ft
Friday
High: 42 °F
E 20kt
5-6ft
Friday Night
Low: 38 °F
E 20kt
6-8ft
Saturday
High: 42 °F
ENE 30kt
7-8ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 9:50 am AKST Dec 2, 2025
Forecast Valid: 2pm AKST Dec 2, 2025-6pm AKST Dec 8, 2025

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY THROUGH LATE TONIGHT...

Synopsis: Onshore SW flow diminishing Tuesday morning. Front incoming from the west expected Tuesday into Tuesday night. Onshore flow returns Wednesday. Another area of low pressure expected to move north through the central Gulf Thursday and Friday. General outflow pattern likely this weekend.

This Afternoon

S wind 10 to 15 kt. Rain. Seas around 7 ft.

Tonight

E wind 15 to 20 kt. Rain. Seas 6 to 7 ft.

Wednesday

ENE wind 15 to 20 kt decreasing to 5 to 10 kt in the afternoon. Rain. Seas around 7 ft.

Wednesday Night

Variable winds less than 5 kt becoming W 10 to 15 kt in the evening. Rain likely, mainly before midnight. Seas around 6 ft.

Thursday

W wind around 10 kt becoming E in the afternoon. Rain likely, mainly after 3pm. Seas 5 to 6 ft.

Thursday Night

NE wind 10 to 15 kt. Rain likely. Seas around 5 ft.

Friday

E wind 15 to 20 kt. Rain. Seas 5 to 6 ft.

Friday Night

E wind around 20 kt. Rain. Seas 6 to 8 ft.

Saturday

ENE wind 20 to 30 kt. Rain. Seas 7 to 8 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.