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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

    • Today

      Today:NNW wind 5 to 7 kt becoming variable and less than 5 kt in the afternoon. A chance of sprinkles before 8am. Seas 1 ft or less.

      NNW 7kt⇓
      < 1ft

    • Tonight

      Tonight:Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Saturday

      Saturday:E wind around 6 kt becoming SSE in the afternoon. Increasing clouds. Seas 1 ft or less.

      SSE 6kt
      < 1ft

    • Saturday Night

      Saturday Night:SSE wind around 8 kt. A chance of showers before 11pm, then a chance of showers and thunderstorms between 11pm and 2am, then showers and possibly a thunderstorm after 2am. Seas 1 ft or less.

      SSE 8kt
      < 1ft

    • Sunday

      Sunday:S wind around 7 kt becoming NW in the afternoon. Showers and possibly a thunderstorm before 11am, then a chance of showers and thunderstorms between 11am and 2pm. Seas 1 ft or less.

      SSW 7kt
      < 1ft

    • Sunday Night

      Sunday Night:Variable winds less than 5 kt becoming W around 6 kt in the evening. Partly cloudy. Seas 1 ft or less.

      ⇑W 6kt
      < 1ft

    • Monday

      Monday:NNW wind around 9 kt. Mostly sunny. Seas around 1 ft.

      NNW 9kt
      1ft

    • Monday Night

      Monday Night:NE wind around 9 kt. Mostly clear. Seas around 1 ft.

      NE 9kt
      1ft

    • Tuesday

      Tuesday:ENE wind around 7 kt becoming SSE in the afternoon. Sunny. Seas 1 ft or less.

      ENE 7kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 3:39 am EDT Sep 11, 2026
Forecast Valid: 5am EDT Sep 11, 2026-6pm EDT Sep 17, 2026

View Nearby Observations

Detailed Forecast


Today
NNW wind 5 to 7 kt becoming variable and less than 5 kt in the afternoon. A chance of sprinkles before 8am. Seas 1 ft or less.
Tonight
Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.
Saturday
E wind around 6 kt becoming SSE in the afternoon. Increasing clouds. Seas 1 ft or less.
Saturday Night
SSE wind around 8 kt. A chance of showers before 11pm, then a chance of showers and thunderstorms between 11pm and 2am, then showers and possibly a thunderstorm after 2am. Seas 1 ft or less.
Sunday
S wind around 7 kt becoming NW in the afternoon. Showers and possibly a thunderstorm before 11am, then a chance of showers and thunderstorms between 11am and 2pm. Seas 1 ft or less.
Sunday Night
Variable winds less than 5 kt becoming W around 6 kt in the evening. Partly cloudy. Seas 1 ft or less.
Monday
NNW wind around 9 kt. Mostly sunny. Seas around 1 ft.
Monday Night
NE wind around 9 kt. Mostly clear. Seas around 1 ft.
Tuesday
ENE wind around 7 kt becoming SSE in the afternoon. Sunny. Seas 1 ft or less.

Winds and seas may be higher in and near tstms.

*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: 40.91°N 73.39°W
Last Update: 3:39 am EDT Sep 11, 2026
Forecast Valid: 5am EDT Sep 11, 2026-6pm EDT Sep 17, 2026
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