National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

For More Weather Information:

New York, NY Local Forecast Office

19NM WSW Islip NY

Marine Point Forecast

[NOTICE]

    • This Afternoon

      This Afternoon:S wind around 17 kt. Mostly cloudy. Seas around 3 ft.

      S 17kt
      3ft

      Small Craft Advisory
      Small Craft Advisory

    • Tonight

      Tonight:S wind 22 to 25 kt becoming SW 19 to 22 kt after midnight. Mostly cloudy, then gradually becoming mostly clear. Seas 5 to 6 ft.

      S 25kt⇓
      5-6ft

      Small Craft Advisory
      Small Craft Advisory

    • Saturday

      Saturday:W wind 20 to 24 kt, with gusts as high as 34 kt. Sunny. Seas 6 ft subsiding to 4 ft.

      W 24kt
      6ftWaves Subsiding

      Gale Warning
      Gale Warning

    • Saturday Night

      Saturday Night:WNW wind 11 to 14 kt becoming NW 7 to 10 kt after midnight. Increasing clouds. Seas 2 to 3 ft.

      WNW 14kt⇓
      2-3ft

    • Sunday

      Sunday:ENE wind 9 to 13 kt becoming ESE in the afternoon. Mostly cloudy. Seas around 2 ft.

      ESE 13kt
      2ft

    • Sunday Night

      Sunday Night:ESE wind 14 to 17 kt increasing to 18 to 21 kt after midnight. Winds could gust as high as 27 kt. Rain after 2am. Seas 2 ft building to 4 ft.

      ⇑ESE 21kt
      Waves Building4ft

    • Monday

      Monday:S wind 24 to 28 kt, with gusts as high as 39 kt. Rain, with thunderstorms also possible after 2pm. Seas 6 ft building to 8 ft.

      S 28kt
      Waves Building8ft

    • Monday Night

      Monday Night:S wind 28 to 31 kt becoming WSW 25 to 28 kt after midnight. Winds could gust as high as 40 kt. Rain and possibly a thunderstorm. Seas 11 ft subsiding to 9 ft.

      S 31kt⇓
      11ftWaves Subsiding

    • Tuesday

      Tuesday:W wind 22 to 24 kt. A chance of rain. Seas 8 ft subsiding to 6 ft.

      W 24kt
      8ftWaves Subsiding


Associated Zone Forecast which includes this point

Last Update: 2:26 pm EDT Mar 13, 2026
Forecast Valid: 3pm EDT Mar 13, 2026-6pm EDT Mar 20, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

This Afternoon
S wind around 17 kt. Mostly cloudy. Seas around 3 ft.
Tonight
S wind 22 to 25 kt becoming SW 19 to 22 kt after midnight. Mostly cloudy, then gradually becoming mostly clear. Seas 5 to 6 ft.
Saturday
W wind 20 to 24 kt, with gusts as high as 34 kt. Sunny. Seas 6 ft subsiding to 4 ft.
Saturday Night
WNW wind 11 to 14 kt becoming NW 7 to 10 kt after midnight. Increasing clouds. Seas 2 to 3 ft.
Sunday
ENE wind 9 to 13 kt becoming ESE in the afternoon. Mostly cloudy. Seas around 2 ft.
Sunday Night
ESE wind 14 to 17 kt increasing to 18 to 21 kt after midnight. Winds could gust as high as 27 kt. Rain after 2am. Seas 2 ft building to 4 ft.
Monday
S wind 24 to 28 kt, with gusts as high as 39 kt. Rain, with thunderstorms also possible after 2pm. Seas 6 ft building to 8 ft.
Monday Night
S wind 28 to 31 kt becoming WSW 25 to 28 kt after midnight. Winds could gust as high as 40 kt. Rain and possibly a thunderstorm. Seas 11 ft subsiding to 9 ft.
Tuesday
W wind 22 to 24 kt. A chance of rain. 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: 40.57°N 73.57°W
Last Update: 2:26 pm EDT Mar 13, 2026
Forecast Valid: 3pm EDT Mar 13, 2026-6pm EDT Mar 20, 2026
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