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New York, NY Local Forecast Office

5NM SSE Islip NY

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:NNE wind around 16 kt. Rain.   Seas 1 ft or less.

      NNE 16kt
      < 1ft

    • Tonight

      Tonight:N wind around 19 kt becoming NW after midnight. Rain, mainly before 10pm.   Seas around 1 ft.

      N 19kt
      1ft

    • Wednesday

      Wednesday:NNW wind 12 to 15 kt decreasing to 8 to 11 kt in the afternoon. Sunny. Seas 1 ft or less.

      NNW 15kt⇓
      < 1ft

    • Wednesday Night

      Wednesday Night:W wind 7 to 10 kt increasing to 12 to 15 kt after midnight. Mostly clear. Seas 1 ft or less.

      ⇑W 15kt
      < 1ft

    • Thursday

      Thursday:W wind 16 to 19 kt becoming WNW 19 to 22 kt in the afternoon. Winds could gust as high as 28 kt. Mostly sunny. Seas around 1 ft.

      ⇑WNW 22kt
      1ft

    • Thursday Night

      Thursday Night:NW wind 18 to 23 kt becoming N 10 to 15 kt. Winds could gust as high as 29 kt. Mostly clear. Seas 1 ft or less.

      NW 23kt⇓
      < 1ft

    • Friday

      Friday:N wind 7 to 9 kt becoming S in the afternoon. Partly sunny. Seas 1 ft or less.

      SSW 9kt
      < 1ft

    • Friday Night

      Friday Night:WSW wind around 8 kt becoming N after midnight. A chance of rain and snow before 1am, then a chance of rain.   Seas 1 ft or less.

      WSW 8kt
      < 1ft

    • Saturday

      Saturday:N wind 7 to 11 kt becoming WNW in the afternoon. A chance of rain.   Seas 1 ft or less.

      WNW 11kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 1:01 pm EST Dec 2, 2025
Forecast Valid: 3pm EST Dec 2, 2025-6pm EST Dec 9, 2025

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

This Afternoon
NNE wind around 16 kt. Rain. Seas 1 ft or less.
Tonight
N wind around 19 kt becoming NW after midnight. Rain, mainly before 10pm. Seas around 1 ft.
Wednesday
NNW wind 12 to 15 kt decreasing to 8 to 11 kt in the afternoon. Sunny. Seas 1 ft or less.
Wednesday Night
W wind 7 to 10 kt increasing to 12 to 15 kt after midnight. Mostly clear. Seas 1 ft or less.
Thursday
W wind 16 to 19 kt becoming WNW 19 to 22 kt in the afternoon. Winds could gust as high as 28 kt. Mostly sunny. Seas around 1 ft.
Thursday Night
NW wind 18 to 23 kt becoming N 10 to 15 kt. Winds could gust as high as 29 kt. Mostly clear. Seas 1 ft or less.
Friday
N wind 7 to 9 kt becoming S in the afternoon. Partly sunny. Seas 1 ft or less.
Friday Night
WSW wind around 8 kt becoming N after midnight. A chance of rain and snow before 1am, then a chance of rain. Seas 1 ft or less.
Saturday
N wind 7 to 11 kt becoming WNW in the afternoon. A chance of rain. Seas 1 ft or less.

*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: 40.66°N 73.17°W
Last Update: 1:01 pm EST Dec 2, 2025
Forecast Valid: 3pm EST Dec 2, 2025-6pm EST Dec 9, 2025
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