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Juneau, AK Local Forecast Office

Cape Spencer AK

Marine Point Forecast

[NOTICE]
    • Today

      Today:Variable winds 5 kt or less. Mostly sunny. Seas 3 to 4 ft.

      High: 52 °F

      Light Wind
      3-4ft

    • Tonight

      Tonight:Variable winds 5 kt or less. A slight chance of rain after 4am.   Seas around 3 ft.

      Low: 42 °F

      Light Wind
      3ft

    • Sunday

      Sunday:ENE wind 15 to 25 kt. Rain, mainly after 7am.   Seas 4 ft building to 7 ft.

      High: 47 °F

      ENE 25kt
      Waves Building7ft

      Small Craft Advisory
      Small Craft Advisory

    • Sunday Night

      Sunday Night:ENE wind 10 to 20 kt. Rain.   Seas 7 to 8 ft.

      Low: 42 °F

      ENE 20kt
      7-8ft

      Small Craft Advisory
      Small Craft Advisory

    • Monday

      Monday:WSW wind around 10 kt. Showers likely, mainly before 10am.   Seas around 6 ft.

      High: 47 °F

      WSW 10kt
      6ft

    • Monday Night

      Monday Night:SSW wind 10 to 15 kt. Showers likely, mainly after 4am.   Seas 5 to 6 ft.

      Low: 42 °F

      SSW 15kt
      5-6ft

    • Tuesday

      Tuesday:SSE wind 5 to 10 kt. Showers.   Seas 4 to 5 ft.

      High: 47 °F

      SSE 10kt
      4-5ft

    • Tuesday Night

      Tuesday Night:E wind 5 to 10 kt. Showers.   Seas around 4 ft.

      Low: 42 °F

      E 10kt
      4ft

    • Wednesday

      Wednesday:E wind around 10 kt. Showers.   Seas around 5 ft.

      High: 47 °F

      E 10kt
      5ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 9:54 am AKDT May 16, 2026
Forecast Valid: 11am AKDT May 16, 2026-6pm AKDT May 22, 2026

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Detailed Forecast


Synopsis: High pressure gradually weakens over the eastern Gulf of Alaska and Southeast Alaska tonight as a strong low pressure system moves north out of the Aleutian Islands. A gale force front, associated with the strong low pressure system to the west, will then move into the eastern Gulf of Alaska by Sunday.

Today
Variable winds 5 kt or less. Mostly sunny. Seas 3 to 4 ft.
Tonight
Variable winds 5 kt or less. A slight chance of rain after 4am. Seas around 3 ft.
Sunday
ENE wind 15 to 25 kt. Rain, mainly after 7am. Seas 4 ft building to 7 ft.
Sunday Night
ENE wind 10 to 20 kt. Rain. Seas 7 to 8 ft.
Monday
WSW wind around 10 kt. Showers likely, mainly before 10am. Seas around 6 ft.
Monday Night
SSW wind 10 to 15 kt. Showers likely, mainly after 4am. Seas 5 to 6 ft.
Tuesday
SSE wind 5 to 10 kt. Showers. Seas 4 to 5 ft.
Tuesday Night
E wind 5 to 10 kt. Showers. Seas around 4 ft.
Wednesday
E wind around 10 kt. Showers. Seas around 5 ft.

*Notices:

  1. 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.
  2. 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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ABOUT THIS FORECAST

Point Forecast: 58.2°N 136.63°W
Last Update: 9:54 am AKDT May 16, 2026
Forecast Valid: 11am AKDT May 16, 2026-6pm AKDT May 22, 2026
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