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Hazardous Weather Conditions

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New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]

    • Tonight

      Tonight:WNW wind 21 to 26 km/h becoming NNW 32 to 37 km/h. Showers and possibly a thunderstorm before 11pm, then a chance of showers between 11pm and 2am, then rain likely after 2am. Seas 1 m or less.

      ⇑NNW 37km/h
      < 1m

    • Saturday

      Saturday:N wind 35 to 40 km/h. Rain likely, mainly before 8am. Seas 1 m or less.

      N 40km/h
      < 1m

    • Saturday Night

      Saturday Night:N wind around 32 km/h. Mostly clear. Seas 1 m or less.

      N 32km/h
      < 1m

    • Sunday

      Sunday:NE wind 21 to 24 km/h decreasing to 16 to 19 km/h in the afternoon. Winds could gust as high as 35 km/h. Sunny. Seas 1 m or less.

      NE 24km/h⇓
      < 1m

    • Sunday Night

      Sunday Night:ENE wind 18 to 21 km/h increasing to 24 to 27 km/h after midnight. Mostly clear. Seas 1 m or less.

      ⇑ENE 27km/h
      < 1m

    • Monday

      Monday:NE wind 32 to 35 km/h decreasing to 29 to 32 km/h in the afternoon. Winds could gust as high as 45 km/h. Partly sunny. Seas 1 m or less.

      NE 35km/h⇓
      < 1m

    • Monday Night

      Monday Night:NNE wind around 27 km/h, with gusts as high as 42 km/h. Mostly cloudy. Seas 1 m or less.

      NNE 27km/h
      < 1m

    • Tuesday

      Tuesday:NNE wind 24 to 27 km/h, with gusts as high as 42 km/h. Mostly cloudy. Seas 1 m or less.

      NNE 27km/h
      < 1m

    • Tuesday Night

      Tuesday Night:NNE wind 23 to 27 km/h, with gusts as high as 42 km/h. Partly cloudy. Seas 1 m or less.

      NNE 27km/h
      < 1m


Associated Zone Forecast which includes this point

Last Update: 7:27 pm EDT Oct 16, 2026
Forecast Valid: 8pm EDT Oct 16, 2026-6pm EDT Oct 23, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING...

Tonight
WNW wind 21 to 26 km/h becoming NNW 32 to 37 km/h. Showers and possibly a thunderstorm before 11pm, then a chance of showers between 11pm and 2am, then rain likely after 2am. Seas 1 m or less.
Saturday
N wind 35 to 40 km/h. Rain likely, mainly before 8am. Seas 1 m or less.
Saturday Night
N wind around 32 km/h. Mostly clear. Seas 1 m or less.
Sunday
NE wind 21 to 24 km/h decreasing to 16 to 19 km/h in the afternoon. Winds could gust as high as 35 km/h. Sunny. Seas 1 m or less.
Sunday Night
ENE wind 18 to 21 km/h increasing to 24 to 27 km/h after midnight. Mostly clear. Seas 1 m or less.
Monday
NE wind 32 to 35 km/h decreasing to 29 to 32 km/h in the afternoon. Winds could gust as high as 45 km/h. Partly sunny. Seas 1 m or less.
Monday Night
NNE wind around 27 km/h, with gusts as high as 42 km/h. Mostly cloudy. Seas 1 m or less.
Tuesday
NNE wind 24 to 27 km/h, with gusts as high as 42 km/h. Mostly cloudy. Seas 1 m or less.
Tuesday Night
NNE wind 23 to 27 km/h, with gusts as high as 42 km/h. Partly cloudy. Seas 1 m or less.

*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: 40.62°N 73.59°W
Last Update: 7:27 pm EDT Oct 16, 2026
Forecast Valid: 8pm EDT Oct 16, 2026-6pm EDT Oct 23, 2026
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