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Juneau, AK Local Forecast Office

Cape Spencer AK

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:W wind around 20 kt, with gusts as high as 30 kt. Showers. The rain could be heavy at times.   Seas around 8 ft.

      Low: 51 °F

      W 20kt
      8ft

      Small Craft Advisory
      Small Craft Advisory

    • Wednesday

      Wednesday:W wind 10 to 20 kt. Showers and thunderstorms likely before 10am, then scattered showers.   Seas 6 to 7 ft.

      High: 56 °F

      W 20kt
      6-7ft

      Small Craft Advisory
      Small Craft Advisory

    • Wednesday Night

      Wednesday Night:WSW wind 5 to 10 kt becoming S after midnight. Isolated showers before 7pm.   Seas 5 to 6 ft.

      Low: 49 °F

      WSW 10kt
      5-6ft

      Small Craft Advisory
      Small Craft Advisory

    • Thursday

      Thursday:NE wind 5 to 10 kt. Mostly sunny. Seas around 5 ft.

      High: 60 °F

      NE 10kt
      5ft

    • Thursday Night

      Thursday Night:WNW wind 10 to 15 kt becoming NE after midnight. Mostly clear. Seas around 4 ft.

      Low: 50 °F

      NE 15kt
      4ft

    • Friday

      Friday:Variable winds 5 kt or less. Mostly sunny. Seas around 3 ft.

      High: 59 °F

      Light Wind
      3ft

    • Friday Night

      Friday Night:Variable winds 5 kt or less. Mostly clear. Seas 2 to 3 ft.

      Low: 49 °F

      Light Wind
      2-3ft

    • Saturday

      Saturday:Variable winds 5 kt or less. Mostly sunny. Seas around 2 ft.

      High: 56 °F

      Light Wind
      2ft

    • Saturday Night

      Saturday Night:Variable winds 5 kt or less. A chance of showers.   Seas 2 to 3 ft.

      Low: 49 °F

      Light Wind
      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: 8:56 pm AKDT Sep 8, 2026
Forecast Valid: 9pm AKDT Sep 8, 2026-6pm AKDT Sep 15, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

Synopsis: A front swinging through will bring strong SW to W winds across the Gulf and outer coastal waters and strong southerlies for inner channels, with gale force winds impacting Lynn Canal. Winds decrease Wednesday before strong northerly winds impact the inner channels Thursday. Seas 8 to 12 ft for the Gulf and coastal waters through tonight will trend downward beginning later Wednesday.

Tonight
W wind around 20 kt, with gusts as high as 30 kt. Showers. The rain could be heavy at times. Seas around 8 ft.
Wednesday
W wind 10 to 20 kt. Showers and thunderstorms likely before 10am, then scattered showers. Seas 6 to 7 ft.
Wednesday Night
WSW wind 5 to 10 kt becoming S after midnight. Isolated showers before 7pm. Seas 5 to 6 ft.
Thursday
NE wind 5 to 10 kt. Mostly sunny. Seas around 5 ft.
Thursday Night
WNW wind 10 to 15 kt becoming NE after midnight. Mostly clear. Seas around 4 ft.
Friday
Variable winds 5 kt or less. Mostly sunny. Seas around 3 ft.
Friday Night
Variable winds 5 kt or less. Mostly clear. Seas 2 to 3 ft.
Saturday
Variable winds 5 kt or less. Mostly sunny. Seas around 2 ft.
Saturday Night
Variable winds 5 kt or less. A chance of showers. Seas 2 to 3 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: 8:56 pm AKDT Sep 8, 2026
Forecast Valid: 9pm AKDT Sep 8, 2026-6pm AKDT Sep 15, 2026
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