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Hazardous Weather Conditions

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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]

    • Tonight

      Tonight:ESE wind 19 to 22 kt increasing to 23 to 26 kt after midnight. Winds could gust as high as 32 kt. Showers, with thunderstorms also possible after 5am. Seas 3 ft building to 6 ft.

      ⇑ESE 26kt
      Waves Building6ft

      Small Craft Advisory
      Small Craft Advisory

    • Monday

      Monday:S wind 25 to 29 kt, with gusts as high as 39 kt. Showers and possibly a thunderstorm. Patchy fog. Seas 8 ft building to 11 ft.

      S 29kt
      Waves Building11ft

    • Monday Night

      Monday Night:S wind 33 to 36 kt becoming WSW 30 to 33 kt after midnight. Winds could gust as high as 44 kt. Showers and possibly a thunderstorm before 2am, then a chance of showers. Seas 15 ft subsiding to 12 ft.

      S 36kt⇓
      15ftWaves Subsiding

    • Tuesday

      Tuesday:W wind 24 to 28 kt. A chance of showers before 8am. Seas 10 ft subsiding to 8 ft.

      W 28kt
      10ftWaves Subsiding

    • Tuesday Night

      Tuesday Night:WNW wind 23 to 26 kt decreasing to 18 to 21 kt after midnight. Mostly clear. Seas 8 ft subsiding to 6 ft.

      WNW 26kt⇓
      8ftWaves Subsiding

    • Wednesday

      Wednesday:NW wind 9 to 12 kt becoming WNW 6 to 9 kt in the afternoon. Increasing clouds. Seas 4 to 5 ft.

      NW 12kt⇓
      4-5ft

    • Wednesday Night

      Wednesday Night:S wind 9 to 11 kt. Mostly cloudy. Seas around 4 ft.

      S 11kt
      4ft

    • Thursday

      Thursday:SSE wind 9 to 11 kt. Partly sunny. Seas 3 to 4 ft.

      SSE 11kt
      3-4ft

    • Thursday Night

      Thursday Night:SSE wind around 10 kt becoming SW after midnight. Mostly cloudy. Seas around 3 ft.

      SSE 10kt
      3ft


Associated Zone Forecast which includes this point

Last Update: 2:22 pm EDT Mar 15, 2026
Forecast Valid: 9pm EDT Mar 15, 2026-6pm EDT Mar 22, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM EDT THIS EVENING

Tonight
ESE wind 19 to 22 kt increasing to 23 to 26 kt after midnight. Winds could gust as high as 32 kt. Showers, with thunderstorms also possible after 5am. Seas 3 ft building to 6 ft.
Monday
S wind 25 to 29 kt, with gusts as high as 39 kt. Showers and possibly a thunderstorm. Patchy fog. Seas 8 ft building to 11 ft.
Monday Night
S wind 33 to 36 kt becoming WSW 30 to 33 kt after midnight. Winds could gust as high as 44 kt. Showers and possibly a thunderstorm before 2am, then a chance of showers. Seas 15 ft subsiding to 12 ft.
Tuesday
W wind 24 to 28 kt. A chance of showers before 8am. Seas 10 ft subsiding to 8 ft.
Tuesday Night
WNW wind 23 to 26 kt decreasing to 18 to 21 kt after midnight. Mostly clear. Seas 8 ft subsiding to 6 ft.
Wednesday
NW wind 9 to 12 kt becoming WNW 6 to 9 kt in the afternoon. Increasing clouds. Seas 4 to 5 ft.
Wednesday Night
S wind 9 to 11 kt. Mostly cloudy. Seas around 4 ft.
Thursday
SSE wind 9 to 11 kt. Partly sunny. Seas 3 to 4 ft.
Thursday Night
SSE wind around 10 kt becoming SW after midnight. Mostly cloudy. Seas around 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: 40.53°N 73.44°W
Last Update: 2:22 pm EDT Mar 15, 2026
Forecast Valid: 9pm EDT Mar 15, 2026-6pm EDT Mar 22, 2026
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