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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]

    • Overnight

      Overnight:SSW wind around 16 kt, with gusts as high as 22 kt. Mostly cloudy. Seas around 4 ft.

      SSW 16kt
      4ft

    • Wednesday

      Wednesday:S wind 19 to 24 kt, with gusts as high as 33 kt. Mostly cloudy. Seas 4 ft building to 6 ft.

      S 24kt
      Waves Building6ft

      Gale Warning
      Gale Warning

    • Wednesday Night

      Wednesday Night:S wind 17 to 20 kt decreasing to 12 to 15 kt after midnight. Winds could gust as high as 28 kt. Showers, mainly after 2am. Patchy fog after 2am. Seas 6 ft subsiding to 4 ft.

      S 20kt⇓
      6ftWaves Subsiding

      Gale Warning
      Gale Warning

    • Thursday

      Thursday:SSE wind 5 to 9 kt becoming SSW in the afternoon. Showers and possibly a thunderstorm before 2pm, then a chance of showers and thunderstorms after 2pm. Patchy fog. Seas around 3 ft.

      SSE 9kt
      3ft

    • Thursday Night

      Thursday Night:WNW wind 8 to 11 kt. A chance of showers and thunderstorms. Seas 2 to 3 ft.

      WNW 11kt
      2-3ft

    • Friday

      Friday:NW wind 8 to 12 kt. A chance of showers before 2pm. Seas around 4 ft.

      NW 12kt
      4ft

    • Friday Night

      Friday Night:WNW wind around 7 kt becoming WSW after midnight. Partly cloudy. Seas around 4 ft.

      W 7kt
      4ft

    • Saturday

      Saturday:WSW wind 8 to 11 kt becoming SSW 14 to 17 kt in the afternoon. Sunny. Seas 3 to 4 ft.

      ⇑SSW 17kt
      3-4ft

    • Saturday Night

      Saturday Night:SSW wind 16 to 19 kt becoming WSW 11 to 14 kt after midnight. Partly cloudy. Seas 5 ft subsiding to 3 ft.

      SSW 19kt⇓
      5ftWaves Subsiding


Associated Zone Forecast which includes this point

Last Update: 2:36 pm EDT May 12, 2026
Forecast Valid: 12am EDT May 13, 2026-6pm EDT May 19, 2026

View Nearby Observations

Detailed Forecast

...GALE WARNING IN EFFECT FROM WEDNESDAY MORNING THROUGH

Overnight
SSW wind around 16 kt, with gusts as high as 22 kt. Mostly cloudy. Seas around 4 ft.
Wednesday
S wind 19 to 24 kt, with gusts as high as 33 kt. Mostly cloudy. Seas 4 ft building to 6 ft.
Wednesday Night
S wind 17 to 20 kt decreasing to 12 to 15 kt after midnight. Winds could gust as high as 28 kt. Showers, mainly after 2am. Patchy fog after 2am. Seas 6 ft subsiding to 4 ft.
Thursday
SSE wind 5 to 9 kt becoming SSW in the afternoon. Showers and possibly a thunderstorm before 2pm, then a chance of showers and thunderstorms after 2pm. Patchy fog. Seas around 3 ft.
Thursday Night
WNW wind 8 to 11 kt. A chance of showers and thunderstorms. Seas 2 to 3 ft.
Friday
NW wind 8 to 12 kt. A chance of showers before 2pm. Seas around 4 ft.
Friday Night
WNW wind around 7 kt becoming WSW after midnight. Partly cloudy. Seas around 4 ft.
Saturday
WSW wind 8 to 11 kt becoming SSW 14 to 17 kt in the afternoon. Sunny. Seas 3 to 4 ft.
Saturday Night
SSW wind 16 to 19 kt becoming WSW 11 to 14 kt after midnight. Partly cloudy. Seas 5 ft subsiding to 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: 2:36 pm EDT May 12, 2026
Forecast Valid: 12am EDT May 13, 2026-6pm EDT May 19, 2026
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