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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]
    • Today

      Today:SSW wind 5 to 7 kt. Mostly cloudy. Seas 1 ft or less.

      SSW 7kt
      < 1ft

    • Tonight

      Tonight:S wind around 9 kt becoming WSW after midnight. A chance of showers, mainly after 2am.   Seas 1 ft or less.

      S 9kt
      < 1ft

    • Friday

      Friday:N wind 8 to 10 kt. Mostly sunny. Seas 1 ft or less.

      N 10kt
      < 1ft

    • Friday Night

      Friday Night:N wind 9 to 12 kt. Partly cloudy. Seas 1 ft or less.

      N 12kt
      < 1ft

    • Saturday

      Saturday:NE wind 6 to 11 kt becoming variable and less than 5 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

      NE 11kt⇓
      < 1ft

    • Saturday Night

      Saturday Night:SE wind 6 to 8 kt. Mostly cloudy. Seas 1 ft or less.

      SE 8kt
      < 1ft

    • Sunday

      Sunday:S wind 10 to 12 kt. Showers after 8am.   Seas 1 ft or less.

      S 12kt
      < 1ft

    • Sunday Night

      Sunday Night:WSW wind 10 to 15 kt becoming N after midnight. Showers likely.   Seas 1 ft or less.

      N 15kt
      < 1ft

    • Monday

      Monday:NE wind 10 to 15 kt. Partly sunny. Seas around 1 ft.

      NE 15kt
      1ft


Associated Zone Forecast which includes this point

Last Update: 1:55 am EDT Sep 17, 2026
Forecast Valid: 10am EDT Sep 17, 2026-6pm EDT Sep 23, 2026

View Nearby Observations

Detailed Forecast


Today
SSW wind 5 to 7 kt. Mostly cloudy. Seas 1 ft or less.
Tonight
S wind around 9 kt becoming WSW after midnight. A chance of showers, mainly after 2am. Seas 1 ft or less.
Friday
N wind 8 to 10 kt. Mostly sunny. Seas 1 ft or less.
Friday Night
N wind 9 to 12 kt. Partly cloudy. Seas 1 ft or less.
Saturday
NE wind 6 to 11 kt becoming variable and less than 5 kt in the afternoon. Mostly sunny. Seas 1 ft or less.
Saturday Night
SE wind 6 to 8 kt. Mostly cloudy. Seas 1 ft or less.
Sunday
S wind 10 to 12 kt. Showers after 8am. Seas 1 ft or less.
Sunday Night
WSW wind 10 to 15 kt becoming N after midnight. Showers likely. Seas 1 ft or less.
Monday
NE wind 10 to 15 kt. Partly sunny. Seas around 1 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: 40.91°N 73.39°W
Last Update: 1:55 am EDT Sep 17, 2026
Forecast Valid: 10am EDT Sep 17, 2026-6pm EDT Sep 23, 2026
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