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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:SW wind 25 to 28 kt decreasing to 22 to 25 kt. Mostly clear. Seas 6 to 7 ft.

      SW 28kt⇓
      6-7ft

      Small Craft Advisory
      Small Craft Advisory

    • Saturday

      Saturday:W wind 22 to 26 kt, with gusts as high as 35 kt. Sunny. Seas 6 to 7 ft.

      W 26kt
      6-7ft

      Gale Warning
      Gale Warning

    • Saturday Night

      Saturday Night:WNW wind 12 to 15 kt becoming NNW 8 to 11 kt after midnight. Increasing clouds. Seas 4 ft subsiding to 2 ft.

      WNW 15kt⇓
      4ftWaves Subsiding

    • Sunday

      Sunday:ENE wind 9 to 12 kt becoming ESE 12 to 15 kt in the afternoon. Mostly cloudy. Seas around 2 ft.

      ⇑ESE 15kt
      2ft

    • Sunday Night

      Sunday Night:ESE wind 15 to 18 kt increasing to 18 to 21 kt after midnight. Winds could gust as high as 28 kt. Rain after 2am. Seas 3 ft building to 5 ft.

      ⇑ESE 21kt
      Waves Building5ft

    • Monday

      Monday:S wind 28 to 31 kt, with gusts as high as 42 kt. Rain, with thunderstorms also possible after 2pm. Seas 7 ft building to 11 ft.

      S 31kt
      Waves Building11ft

    • Monday Night

      Monday Night:S wind 34 to 37 kt becoming WSW 31 to 34 kt after midnight. Winds could gust as high as 44 kt. Rain and possibly a thunderstorm. Seas 15 ft subsiding to 12 ft.

      S 37kt⇓
      15ftWaves Subsiding

    • Tuesday

      Tuesday:W wind 26 to 29 kt. A chance of rain. Seas 9 to 10 ft.

      W 29kt
      9-10ft

    • Tuesday Night

      Tuesday Night:WNW wind 25 to 28 kt decreasing to 22 to 25 kt after midnight. Mostly clear. Seas 8 ft subsiding to 6 ft.

      WNW 28kt⇓
      8ftWaves Subsiding


Associated Zone Forecast which includes this point

Last Update: 9:14 pm EDT Mar 13, 2026
Forecast Valid: 12am EDT Mar 14, 2026-6pm EDT Mar 20, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT SATURDAY...

Overnight
SW wind 25 to 28 kt decreasing to 22 to 25 kt. Mostly clear. Seas 6 to 7 ft.
Saturday
W wind 22 to 26 kt, with gusts as high as 35 kt. Sunny. Seas 6 to 7 ft.
Saturday Night
WNW wind 12 to 15 kt becoming NNW 8 to 11 kt after midnight. Increasing clouds. Seas 4 ft subsiding to 2 ft.
Sunday
ENE wind 9 to 12 kt becoming ESE 12 to 15 kt in the afternoon. Mostly cloudy. Seas around 2 ft.
Sunday Night
ESE wind 15 to 18 kt increasing to 18 to 21 kt after midnight. Winds could gust as high as 28 kt. Rain after 2am. Seas 3 ft building to 5 ft.
Monday
S wind 28 to 31 kt, with gusts as high as 42 kt. Rain, with thunderstorms also possible after 2pm. Seas 7 ft building to 11 ft.
Monday Night
S wind 34 to 37 kt becoming WSW 31 to 34 kt after midnight. Winds could gust as high as 44 kt. Rain and possibly a thunderstorm. Seas 15 ft subsiding to 12 ft.
Tuesday
W wind 26 to 29 kt. A chance of rain. Seas 9 to 10 ft.
Tuesday Night
WNW wind 25 to 28 kt decreasing to 22 to 25 kt after midnight. Mostly clear. Seas 8 ft subsiding to 6 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: 9:14 pm EDT Mar 13, 2026
Forecast Valid: 12am EDT Mar 14, 2026-6pm EDT Mar 20, 2026
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