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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]
    • Late Afternoon

      Late Afternoon:SSW wind around 11 kt. Showers likely and possibly a thunderstorm before 5pm, then a chance of showers and thunderstorms after 5pm.   Seas 1 ft or less.

      SSW 11kt
      < 1ft

    • Tonight

      Tonight:WNW wind 6 to 9 kt becoming NNW after midnight. A chance of showers and thunderstorms before 8pm.   Seas 1 ft or less.

      WNW 9kt
      < 1ft

    • Tuesday

      Tuesday:Variable winds 5 kt or less. Patchy fog before 8am.  Seas 1 ft or less.

      Light Wind
      < 1ft

    • Tuesday Night

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

      Light Wind
      < 1ft

    • Wednesday

      Wednesday:Variable winds 5 kt or less. Partly sunny. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Wednesday Night

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

      SSW 7kt
      < 1ft

    • Thursday

      Thursday:SSW wind 5 to 8 kt. Mostly sunny. Seas 1 ft or less.

      SSW 8kt
      < 1ft

    • Thursday Night

      Thursday Night:SW wind 6 to 9 kt. A chance of showers and thunderstorms between 8pm and 2am.   Seas 1 ft or less.

      SW 9kt
      < 1ft

    • Friday

      Friday:SW wind around 7 kt. A chance of showers.   Seas 1 ft or less.

      SW 7kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 4:32 pm EDT Aug 3, 2026
Forecast Valid: 4pm EDT Aug 3, 2026-6pm EDT Aug 10, 2026

View Nearby Observations

Detailed Forecast


Late Afternoon
SSW wind around 11 kt. Showers likely and possibly a thunderstorm before 5pm, then a chance of showers and thunderstorms after 5pm. Seas 1 ft or less.
Tonight
WNW wind 6 to 9 kt becoming NNW after midnight. A chance of showers and thunderstorms before 8pm. Seas 1 ft or less.
Tuesday
Variable winds 5 kt or less. Patchy fog before 8am. Seas 1 ft or less.
Tuesday Night
Variable winds 5 kt or less. Mostly cloudy. Seas 1 ft or less.
Wednesday
Variable winds 5 kt or less. Partly sunny. Seas 1 ft or less.
Wednesday Night
SSW wind 5 to 7 kt. Mostly cloudy. Seas 1 ft or less.
Thursday
SSW wind 5 to 8 kt. Mostly sunny. Seas 1 ft or less.
Thursday Night
SW wind 6 to 9 kt. A chance of showers and thunderstorms between 8pm and 2am. Seas 1 ft or less.
Friday
SW wind around 7 kt. A chance of showers. 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: 4:32 pm EDT Aug 3, 2026
Forecast Valid: 4pm EDT Aug 3, 2026-6pm EDT Aug 10, 2026
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