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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]

    • Today

      Today:NW wind 6 to 9 kt becoming E 11 to 14 kt in the morning. Patchy fog before 10am. Seas 3 to 4 ft.

      ⇑E 14kt
      3-4ft

      Small Craft Advisory
      Small Craft Advisory

    • Tonight

      Tonight:E wind 20 to 23 kt decreasing to 15 to 18 kt after midnight. A chance of rain between 11pm and 5am, then a chance of rain and thunderstorms after 5am. Seas 4 to 5 ft.

      E 23kt⇓
      4-5ft

      Small Craft Advisory
      Small Craft Advisory

    • Sunday

      Sunday:SSW wind 20 to 25 kt, with gusts as high as 31 kt. Rain and thunderstorms likely, then rain after 2pm. Seas 5 ft building to 7 ft.

      SSW 25kt
      Waves Building7ft

    • Sunday Night

      Sunday Night:WSW wind around 16 kt becoming NW after midnight. Rain likely before 8pm. Seas 4 to 5 ft.

      WNW 16kt
      4-5ft

    • Monday

      Monday:WNW wind 12 to 15 kt becoming WSW in the afternoon. Sunny. Seas around 4 ft.

      WNW 15kt
      4ft

    • Monday Night

      Monday Night:WSW wind 8 to 11 kt becoming W after midnight. Partly cloudy. Seas around 3 ft.

      WSW 11kt
      3ft

    • Tuesday

      Tuesday:WNW wind around 15 kt. Mostly sunny. Seas around 3 ft.

      WNW 15kt
      3ft

    • Tuesday Night

      Tuesday Night:N wind 16 to 18 kt. Mostly clear. Seas 2 to 3 ft.

      N 18kt
      2-3ft

    • Wednesday

      Wednesday:NNE wind 10 to 13 kt becoming ENE 7 to 10 kt in the afternoon. Sunny. Seas 1 to 2 ft.

      NNE 13kt⇓
      1-2ft


Associated Zone Forecast which includes this point

Last Update: 2:33 am EDT Apr 4, 2026
Forecast Valid: 6am EDT Apr 4, 2026-6pm EDT Apr 10, 2026

View Nearby Observations

Detailed Forecast

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

Today
NW wind 6 to 9 kt becoming E 11 to 14 kt in the morning. Patchy fog before 10am. Seas 3 to 4 ft.
Tonight
E wind 20 to 23 kt decreasing to 15 to 18 kt after midnight. A chance of rain between 11pm and 5am, then a chance of rain and thunderstorms after 5am. Seas 4 to 5 ft.
Sunday
SSW wind 20 to 25 kt, with gusts as high as 31 kt. Rain and thunderstorms likely, then rain after 2pm. Seas 5 ft building to 7 ft.
Sunday Night
WSW wind around 16 kt becoming NW after midnight. Rain likely before 8pm. Seas 4 to 5 ft.
Monday
WNW wind 12 to 15 kt becoming WSW in the afternoon. Sunny. Seas around 4 ft.
Monday Night
WSW wind 8 to 11 kt becoming W after midnight. Partly cloudy. Seas around 3 ft.
Tuesday
WNW wind around 15 kt. Mostly sunny. Seas around 3 ft.
Tuesday Night
N wind 16 to 18 kt. Mostly clear. Seas 2 to 3 ft.
Wednesday
NNE wind 10 to 13 kt becoming ENE 7 to 10 kt in the afternoon. Sunny. Seas 1 to 2 ft.

Winds and seas may be higher in and near tstms.

*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: 2:33 am EDT Apr 4, 2026
Forecast Valid: 6am EDT Apr 4, 2026-6pm EDT Apr 10, 2026
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