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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]

    • Saturday

      Saturday:Variable winds less than 5 kt becoming S 12 to 17 kt in the morning. Sunny. Seas 3 to 4 ft.

      ⇑S 17kt
      3-4ft

      Small Craft Advisory
      Small Craft Advisory

    • Saturday Night

      Saturday Night:SSW wind 21 to 24 kt decreasing to 16 to 19 kt after midnight. A slight chance of showers between 2am and 5am, then a chance of sprinkles after 5am. Seas 5 to 6 ft.

      SSW 24kt⇓
      5-6ft

      Small Craft Advisory
      Small Craft Advisory

    • Sunday

      Sunday:W wind 8 to 12 kt becoming SSW in the afternoon. A chance of sprinkles before 8am. Seas around 4 ft.

      SSW 12kt
      4ft

      Small Craft Advisory
      Small Craft Advisory

    • Sunday Night

      Sunday Night:SSW wind 5 to 10 kt becoming NNW after midnight. Partly cloudy. Seas 3 to 4 ft.

      SSW 10kt
      3-4ft

    • Monday

      Monday:E wind 8 to 10 kt becoming SE in the afternoon. Sunny. Seas 2 to 3 ft.

      E 10kt
      2-3ft

    • Monday Night

      Monday Night:SSE wind 7 to 11 kt becoming SSW after midnight. Partly cloudy. Seas 2 to 3 ft.

      SSW 11kt
      2-3ft

    • Tuesday

      Tuesday:SSW wind 10 to 15 kt increasing to 15 to 20 kt in the afternoon. Sunny. Seas 3 to 4 ft.

      ⇑SSW 20kt
      3-4ft

    • Tuesday Night

      Tuesday Night:SSW wind 21 to 24 kt decreasing to 16 to 19 kt after midnight. Partly cloudy. Seas 6 ft subsiding to 4 ft.

      SSW 24kt⇓
      6ftWaves Subsiding

    • Wednesday

      Wednesday:SSW wind 13 to 16 kt increasing to 17 to 20 kt in the afternoon. A chance of showers. Seas 3 to 4 ft.

      ⇑SSW 20kt
      3-4ft


Associated Zone Forecast which includes this point

Last Update: 2:19 am EDT May 16, 2026
Forecast Valid: 3am EDT May 16, 2026-6pm EDT May 22, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM EDT THIS AFTERNOON

Saturday
Variable winds less than 5 kt becoming S 12 to 17 kt in the morning. Sunny. Seas 3 to 4 ft.
Saturday Night
SSW wind 21 to 24 kt decreasing to 16 to 19 kt after midnight. A slight chance of showers between 2am and 5am, then a chance of sprinkles after 5am. Seas 5 to 6 ft.
Sunday
W wind 8 to 12 kt becoming SSW in the afternoon. A chance of sprinkles before 8am. Seas around 4 ft.
Sunday Night
SSW wind 5 to 10 kt becoming NNW after midnight. Partly cloudy. Seas 3 to 4 ft.
Monday
E wind 8 to 10 kt becoming SE in the afternoon. Sunny. Seas 2 to 3 ft.
Monday Night
SSE wind 7 to 11 kt becoming SSW after midnight. Partly cloudy. Seas 2 to 3 ft.
Tuesday
SSW wind 10 to 15 kt increasing to 15 to 20 kt in the afternoon. Sunny. Seas 3 to 4 ft.
Tuesday Night
SSW wind 21 to 24 kt decreasing to 16 to 19 kt after midnight. Partly cloudy. Seas 6 ft subsiding to 4 ft.
Wednesday
SSW wind 13 to 16 kt increasing to 17 to 20 kt in the afternoon. A chance of showers. Seas 3 to 4 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: 2:19 am EDT May 16, 2026
Forecast Valid: 3am EDT May 16, 2026-6pm EDT May 22, 2026
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