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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:W wind 7 to 9 kt. Patchy fog after midnight.  Seas around 4 ft.

      W 9kt
      4ft

      Small Craft Advisory
      Small Craft Advisory

    • Monday

      Monday:Variable winds less than 5 kt becoming SSW 5 to 8 kt in the morning. Mostly sunny. Seas around 3 ft.

      ⇑SSW 8kt
      3ft

    • Monday Night

      Monday Night:SSW wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Mostly cloudy. Seas around 3 ft.

      SSW 7kt⇓
      3ft

    • Tuesday

      Tuesday:Variable winds less than 5 kt becoming SSW 5 to 7 kt in the morning. Partly sunny. Seas around 2 ft.

      ⇑SSW 7kt
      2ft

    • Tuesday Night

      Tuesday Night:SSW wind 7 to 9 kt. Mostly cloudy. Seas 2 to 3 ft.

      SSW 9kt
      2-3ft

    • Wednesday

      Wednesday:S wind 10 to 13 kt increasing to 15 to 18 kt in the afternoon. Cloudy. Seas 3 to 4 ft.

      ⇑S 18kt
      3-4ft

    • Wednesday Night

      Wednesday Night:SSW wind 22 to 26 kt, with gusts as high as 32 kt. A chance of showers after 2am.   Seas 5 ft building to 7 ft.

      SSW 26kt
      Waves Building7ft

    • Thursday

      Thursday:SSW wind 24 to 27 kt becoming W 21 to 24 kt in the afternoon. Showers likely.   Seas 7 to 8 ft.

      SSW 27kt⇓
      7-8ft

    • Thursday Night

      Thursday Night:WNW wind 19 to 23 kt. A chance of showers.   Seas 5 to 6 ft.

      WNW 23kt
      5-6ft


Associated Zone Forecast which includes this point

Last Update: 9:30 pm EDT Mar 8, 2026
Forecast Valid: 10pm EDT Mar 8, 2026-6pm EDT Mar 15, 2026

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Detailed Forecast

...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM EDT MONDAY...

Tonight
W wind 7 to 9 kt. Patchy fog after midnight. Seas around 4 ft.
Monday
Variable winds less than 5 kt becoming SSW 5 to 8 kt in the morning. Mostly sunny. Seas around 3 ft.
Monday Night
SSW wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Mostly cloudy. Seas around 3 ft.
Tuesday
Variable winds less than 5 kt becoming SSW 5 to 7 kt in the morning. Partly sunny. Seas around 2 ft.
Tuesday Night
SSW wind 7 to 9 kt. Mostly cloudy. Seas 2 to 3 ft.
Wednesday
S wind 10 to 13 kt increasing to 15 to 18 kt in the afternoon. Cloudy. Seas 3 to 4 ft.
Wednesday Night
SSW wind 22 to 26 kt, with gusts as high as 32 kt. A chance of showers after 2am. Seas 5 ft building to 7 ft.
Thursday
SSW wind 24 to 27 kt becoming W 21 to 24 kt in the afternoon. Showers likely. Seas 7 to 8 ft.
Thursday Night
WNW wind 19 to 23 kt. A chance of showers. Seas 5 to 6 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: 9:30 pm EDT Mar 8, 2026
Forecast Valid: 10pm EDT Mar 8, 2026-6pm EDT Mar 15, 2026
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