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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]
    • Today

      Today:N wind 12 to 14 kt, with gusts as high as 21 kt. Rain, mainly before 11am.   Seas around 4 ft.

      N 14kt
      4ft

      Small Craft Advisory
      Small Craft Advisory

    • Tonight

      Tonight:NNW wind 13 to 17 kt, with gusts as high as 23 kt. A slight chance of showers before 8pm.   Seas around 4 ft.

      NNW 17kt
      4ft

      Small Craft Advisory
      Small Craft Advisory

    • Tuesday

      Tuesday:N wind 11 to 14 kt becoming W 6 to 9 kt in the afternoon. Sunny. Seas 2 to 3 ft.

      N 14kt⇓
      2-3ft

    • Tuesday Night

      Tuesday Night:SW wind 12 to 15 kt. Increasing clouds. Seas 2 to 3 ft.

      SW 15kt
      2-3ft

    • Wednesday

      Wednesday:WSW wind 10 to 13 kt becoming SSW 13 to 16 kt in the afternoon. Partly sunny. Seas 2 to 3 ft.

      ⇑SSW 16kt
      2-3ft

    • Wednesday Night

      Wednesday Night:SSW wind 15 to 19 kt. Mostly cloudy. Seas 3 to 4 ft.

      SSW 19kt
      3-4ft

    • Thursday

      Thursday:SSW wind 13 to 16 kt. Mostly cloudy. Seas around 3 ft.

      SSW 16kt
      3ft

    • Thursday Night

      Thursday Night:SSW wind 20 to 23 kt. Rain likely.   Seas 4 to 5 ft.

      SSW 23kt
      4-5ft

    • Friday

      Friday:WSW wind 16 to 21 kt becoming NNW in the afternoon. Rain likely.   Seas 4 to 5 ft.

      WSW 21kt
      4-5ft


Associated Zone Forecast which includes this point

Last Update: 2:12 am EDT Mar 23, 2026
Forecast Valid: 6am EDT Mar 23, 2026-6pm EDT Mar 29, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY MORNING...

Today
N wind 12 to 14 kt, with gusts as high as 21 kt. Rain, mainly before 11am. Seas around 4 ft.
Tonight
NNW wind 13 to 17 kt, with gusts as high as 23 kt. A slight chance of showers before 8pm. Seas around 4 ft.
Tuesday
N wind 11 to 14 kt becoming W 6 to 9 kt in the afternoon. Sunny. Seas 2 to 3 ft.
Tuesday Night
SW wind 12 to 15 kt. Increasing clouds. Seas 2 to 3 ft.
Wednesday
WSW wind 10 to 13 kt becoming SSW 13 to 16 kt in the afternoon. Partly sunny. Seas 2 to 3 ft.
Wednesday Night
SSW wind 15 to 19 kt. Mostly cloudy. Seas 3 to 4 ft.
Thursday
SSW wind 13 to 16 kt. Mostly cloudy. Seas around 3 ft.
Thursday Night
SSW wind 20 to 23 kt. Rain likely. Seas 4 to 5 ft.
Friday
WSW wind 16 to 21 kt becoming NNW in the afternoon. Rain likely. Seas 4 to 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: 40.53°N 73.44°W
Last Update: 2:12 am EDT Mar 23, 2026
Forecast Valid: 6am EDT Mar 23, 2026-6pm EDT Mar 29, 2026
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