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Juneau, AK Local Forecast Office

Cape Spencer AK

Marine Point Forecast

[NOTICE]

This Afternoon
High: 47 °F
SSW 10kt
8ft

Small Craft Advisory
Tonight
Low: 42 °F
SSE 10kt
7-8ft

Small Craft Advisory
Thursday
High: 48 °F
Light Wind
6ft

Small Craft Advisory
Thursday Night
Low: 42 °F
Light Wind
4-5ft
Friday
High: 48 °F
Light Wind
4ft
Friday Night
Low: 42 °F
Light Wind
4ft
Saturday
High: 49 °F
ESE 10kt
3-4ft
Saturday Night
Low: 43 °F
ESE 10kt
3ft
Sunday
High: 52 °F
E 10kt
2-3ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:45 pm AKDT May 27, 2026
Forecast Valid: 4pm AKDT May 27, 2026-6pm AKDT Jun 2, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

Synopsis: A low in the vicinity of Prince William Sound will remain quasistationary through Friday. Shortwaves rotating around the low will bring occasion periods of more breezy conditions. Maritime conditions are expected to improve by the end of this week as a weak ridge moves over the Panhandle.

This Afternoon

SSW wind around 10 kt. Showers. Seas around 8 ft.

Tonight

SSE wind 5 to 10 kt. Showers. Seas 7 to 8 ft.

Thursday

Variable winds 5 kt or less. Showers, mainly before 1pm. Seas around 6 ft.

Thursday Night

Variable winds 5 kt or less. Rain likely, mainly after 4am. Seas 4 to 5 ft.

Friday

Variable winds 5 kt or less. Showers likely, mainly before 1pm. Seas around 4 ft.

Friday Night

Variable winds 5 kt or less. A chance of showers before 7pm, then a chance of showers after 4am. Seas around 4 ft.

Saturday

ESE wind around 10 kt. Showers, mainly after 10am. Seas 3 to 4 ft.

Saturday Night

ESE wind 5 to 10 kt. Showers. Seas around 3 ft.

Sunday

E wind around 10 kt. A chance of showers. Seas 2 to 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.