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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:NW wind 5 to 7 kt becoming variable and less than 5 kt. Mostly clear. Seas 1 ft or less.

      NW 7kt⇓
      < 1ft

    • Saturday

      Saturday:NNW wind around 7 kt. Sunny. Seas 1 ft or less.

      NNW 7kt
      < 1ft

    • Saturday Night

      Saturday Night:NNE wind 6 to 8 kt becoming E after midnight. A chance of showers, mainly between 11pm and 2am.   Seas 1 ft or less.

      E 8kt
      < 1ft

    • Sunday

      Sunday:NE wind 5 to 8 kt becoming variable and less than 5 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

      NE 8kt⇓
      < 1ft

    • Sunday Night

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

      Light Wind
      < 1ft

    • Labor Day

      Labor Day:NNW wind around 6 kt becoming variable and less than 5 kt in the afternoon. Sunny. Seas 1 ft or less.

      NNW 6kt⇓
      < 1ft

    • Monday Night

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

      Light Wind
      < 1ft

    • Tuesday

      Tuesday:Variable winds 5 kt or less. Mostly sunny. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Tuesday Night

      Tuesday Night:Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.

      Light Wind
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:20 pm EDT Sep 4, 2026
Forecast Valid: 5pm EDT Sep 4, 2026-6pm EDT Sep 11, 2026

View Nearby Observations

Detailed Forecast


Tonight
NW wind 5 to 7 kt becoming variable and less than 5 kt. Mostly clear. Seas 1 ft or less.
Saturday
NNW wind around 7 kt. Sunny. Seas 1 ft or less.
Saturday Night
NNE wind 6 to 8 kt becoming E after midnight. A chance of showers, mainly between 11pm and 2am. Seas 1 ft or less.
Sunday
NE wind 5 to 8 kt becoming variable and less than 5 kt in the afternoon. Mostly sunny. Seas 1 ft or less.
Sunday Night
Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.
Labor Day
NNW wind around 6 kt becoming variable and less than 5 kt in the afternoon. Sunny. Seas 1 ft or less.
Monday Night
Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.
Tuesday
Variable winds 5 kt or less. Mostly sunny. Seas 1 ft or less.
Tuesday Night
Variable winds 5 kt or less. Partly cloudy. 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: 2:20 pm EDT Sep 4, 2026
Forecast Valid: 5pm EDT Sep 4, 2026-6pm EDT Sep 11, 2026
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