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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]
    • Sunday

      Sunday:Variable winds 5 kt or less. Sunny. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Sunday Night

      Sunday Night:S wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas 1 ft or less.

      S 7kt⇓
      < 1ft

    • Monday

      Monday:Variable winds less than 5 kt becoming SSW 5 to 8 kt in the afternoon. Sunny. Seas 1 ft or less.

      ⇑SSW 8kt
      < 1ft

    • Monday Night

      Monday Night:SW wind 9 to 11 kt. Clear. Seas around 1 ft.

      SW 11kt
      1ft

    • Tuesday

      Tuesday:WSW wind 8 to 11 kt. Sunny. Seas around 1 ft.

      WSW 11kt
      1ft

    • Tuesday Night

      Tuesday Night:WSW wind 12 to 14 kt, with gusts as high as 20 kt. Mostly clear. Seas 1 to 2 ft.

      WSW 14kt
      1-2ft

    • Wednesday

      Wednesday:WSW wind around 11 kt. Sunny. Seas around 1 ft.

      WSW 11kt
      1ft

    • Wednesday Night

      Wednesday Night:NW wind 5 to 10 kt. Partly cloudy. Seas around 1 ft.

      NW 10kt
      1ft

    • Thursday

      Thursday:Variable winds less than 5 kt becoming WNW around 6 kt in the morning. Mostly sunny. Seas 1 ft or less.

      ⇑WNW 6kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:32 am EDT Jul 12, 2026
Forecast Valid: 4am EDT Jul 12, 2026-6pm EDT Jul 18, 2026

View Nearby Observations

Detailed Forecast


Sunday
Variable winds 5 kt or less. Sunny. Seas 1 ft or less.
Sunday Night
S wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas 1 ft or less.
Monday
Variable winds less than 5 kt becoming SSW 5 to 8 kt in the afternoon. Sunny. Seas 1 ft or less.
Monday Night
SW wind 9 to 11 kt. Clear. Seas around 1 ft.
Tuesday
WSW wind 8 to 11 kt. Sunny. Seas around 1 ft.
Tuesday Night
WSW wind 12 to 14 kt, with gusts as high as 20 kt. Mostly clear. Seas 1 to 2 ft.
Wednesday
WSW wind around 11 kt. Sunny. Seas around 1 ft.
Wednesday Night
NW wind 5 to 10 kt. Partly cloudy. Seas around 1 ft.
Thursday
Variable winds less than 5 kt becoming WNW around 6 kt in the morning. Mostly sunny. Seas 1 ft 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: 40.91°N 73.39°W
Last Update: 2:32 am EDT Jul 12, 2026
Forecast Valid: 4am EDT Jul 12, 2026-6pm EDT Jul 18, 2026
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