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Juneau, AK Local Forecast Office

Harbor Island AK

Marine Point Forecast

[NOTICE]
    • Sunday

      Sunday:ESE wind 5 to 10 kt increasing to 10 to 15 kt in the afternoon. Rain likely, mainly after 4pm.   Seas 1 to 3 ft.

      High: 46 °F

      ⇑ESE 15kt
      1-3ft

    • Sunday Night

      Sunday Night:ESE wind 15 to 20 kt. Rain, mainly before 4am.   Seas 3 to 4 ft.

      Low: 44 °F

      ESE 20kt
      3-4ft

    • Columbus Day

      Columbus Day:Variable winds 5 kt or less. Rain.   Seas around 1 ft.

      High: 47 °F

      Light Wind
      1ft

    • Monday Night

      Monday Night:Variable winds 5 kt or less. Rain likely, mainly before 10pm.   Seas around 1 ft.

      Low: 43 °F

      Light Wind
      1ft

    • Tuesday

      Tuesday:Variable winds 5 kt or less. A chance of rain before 10am.   Seas around 1 ft.

      High: 48 °F

      Light Wind
      1ft

    • Tuesday Night

      Tuesday Night:Variable winds 5 kt or less. A chance of rain after 10pm.   Seas around 1 ft.

      Low: 42 °F

      Light Wind
      1ft

    • Wednesday

      Wednesday:Variable winds 5 kt or less. A chance of rain.   Seas around 1 ft.

      High: 48 °F

      Light Wind
      1ft

    • Wednesday Night

      Wednesday Night:ENE wind 5 to 10 kt. Rain likely.   Seas 1 to 2 ft.

      Low: 42 °F

      ENE 10kt
      1-2ft

    • Thursday

      Thursday:E wind around 10 kt. Rain likely.   Seas 2 to 3 ft.

      High: 49 °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: 1:29 am AKDT Oct 11, 2026
Forecast Valid: 4am AKDT Oct 11, 2026-6pm AKDT Oct 17, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY THIS EVENING THROUGH LATE TONIGHT...

Synopsis: A front moves through the Gulf into the panhandle today will brings south to southeasterly winds 25 to 35 kts, with seas to 8 to 14 ft along the outside waters. Winds up to 40 kts and seas up to 15 ft near Cape Suckling early this morning. Inside waters winds will become fresh to strong and continue through tonight. Winds and seas will trend lower Monday into Tuesday. Outlook: a stronger system moves in mid to late next week.

Sunday
ESE wind 5 to 10 kt increasing to 10 to 15 kt in the afternoon. Rain likely, mainly after 4pm. Seas 1 to 3 ft.
Sunday Night
ESE wind 15 to 20 kt. Rain, mainly before 4am. Seas 3 to 4 ft.
Columbus Day
Variable winds 5 kt or less. Rain. Seas around 1 ft.
Monday Night
Variable winds 5 kt or less. Rain likely, mainly before 10pm. Seas around 1 ft.
Tuesday
Variable winds 5 kt or less. A chance of rain before 10am. Seas around 1 ft.
Tuesday Night
Variable winds 5 kt or less. A chance of rain after 10pm. Seas around 1 ft.
Wednesday
Variable winds 5 kt or less. A chance of rain. Seas around 1 ft.
Wednesday Night
ENE wind 5 to 10 kt. Rain likely. Seas 1 to 2 ft.
Thursday
E wind around 10 kt. Rain likely. 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: 57.77°N 133.59°W
Last Update: 1:29 am AKDT Oct 11, 2026
Forecast Valid: 4am AKDT Oct 11, 2026-6pm AKDT Oct 17, 2026
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