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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:SSW wind 14 to 19 kt. Sunny. Seas 3 to 4 ft.

      SSW 19kt
      3-4ft

      Small Craft Advisory
      Small Craft Advisory

    • Tonight

      Tonight:SW wind 21 to 24 kt decreasing to 16 to 19 kt after midnight. Winds could gust as high as 30 kt. A slight chance of showers and thunderstorms before 2am. Seas 6 ft subsiding to 4 ft.

      SW 24kt⇓
      6ftWaves Subsiding

      Small Craft Advisory
      Small Craft Advisory

    • Thursday

      Thursday:SSW wind 11 to 16 kt. Sunny. Seas 3 to 4 ft.

      SSW 16kt
      3-4ft

    • Thursday Night

      Thursday Night:SSW wind 16 to 19 kt becoming WSW 10 to 13 kt after midnight. Mostly clear. Seas 3 to 4 ft.

      SSW 19kt⇓
      3-4ft

    • Friday

      Friday:W wind 7 to 10 kt becoming SW 11 to 14 kt in the afternoon. Sunny. Seas 2 to 3 ft.

      ⇑SW 14kt
      2-3ft

    • Friday Night

      Friday Night:WSW wind 5 to 9 kt becoming WNW in the evening. Partly cloudy. Seas around 2 ft.

      WSW 9kt
      2ft

    • Independence Day

      Independence Day:Variable winds less than 5 kt becoming SSW 8 to 13 kt in the morning. A chance of showers after 2pm. Seas around 2 ft.

      ⇑SSW 13kt
      2ft

    • Saturday Night

      Saturday Night:S wind 5 to 9 kt becoming W after midnight. A chance of showers before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Seas around 2 ft.

      S 9kt
      2ft

    • Sunday

      Sunday:WNW wind 5 to 8 kt becoming S 8 to 11 kt in the afternoon. A chance of showers. Seas around 2 ft.

      ⇑S 11kt
      2ft


Associated Zone Forecast which includes this point

Last Update: 2:37 am EDT Jul 1, 2026
Forecast Valid: 8am EDT Jul 1, 2026-6pm EDT Jul 7, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING

Today
SSW wind 14 to 19 kt. Sunny. Seas 3 to 4 ft.
Tonight
SW wind 21 to 24 kt decreasing to 16 to 19 kt after midnight. Winds could gust as high as 30 kt. A slight chance of showers and thunderstorms before 2am. Seas 6 ft subsiding to 4 ft.
Thursday
SSW wind 11 to 16 kt. Sunny. Seas 3 to 4 ft.
Thursday Night
SSW wind 16 to 19 kt becoming WSW 10 to 13 kt after midnight. Mostly clear. Seas 3 to 4 ft.
Friday
W wind 7 to 10 kt becoming SW 11 to 14 kt in the afternoon. Sunny. Seas 2 to 3 ft.
Friday Night
WSW wind 5 to 9 kt becoming WNW in the evening. Partly cloudy. Seas around 2 ft.
Independence Day
Variable winds less than 5 kt becoming SSW 8 to 13 kt in the morning. A chance of showers after 2pm. Seas around 2 ft.
Saturday Night
S wind 5 to 9 kt becoming W after midnight. A chance of showers before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Seas around 2 ft.
Sunday
WNW wind 5 to 8 kt becoming S 8 to 11 kt in the afternoon. A chance of showers. Seas around 2 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: 2:37 am EDT Jul 1, 2026
Forecast Valid: 8am EDT Jul 1, 2026-6pm EDT Jul 7, 2026
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