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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

    • Today

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

      NE 8kt⇓
      < 1ft

    • Tonight

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

      Light Wind
      < 1ft

    • Sunday

      Sunday:Variable winds less than 5 kt becoming S 6 to 11 kt in the morning. A chance of showers after 5pm. Seas 1 ft or less.

      ⇑S 11kt
      < 1ft

    • Sunday Night

      Sunday Night:SSE wind 12 to 14 kt, with gusts as high as 22 kt. Showers before 11pm, then showers and possibly a thunderstorm between 11pm and 2am, then showers after 2am. Seas 1 ft or less.

      SSE 14kt
      < 1ft

    • Monday

      Monday:NE wind 7 to 10 kt becoming N in the morning. A slight chance of showers before 2pm. Seas 1 ft or less.

      NE 10kt
      < 1ft

    • Monday Night

      Monday Night:N wind around 6 kt. Partly cloudy. Seas 1 ft or less.

      N 6kt
      < 1ft

    • Tuesday

      Tuesday:N wind around 6 kt becoming variable and less than 5 kt in the morning. Sunny. Seas 1 ft or less.

      N 6kt⇓
      < 1ft

    • Tuesday Night

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

      Light Wind
      < 1ft

    • Wednesday

      Wednesday:Variable winds less than 5 kt becoming SSW around 6 kt in the afternoon. Sunny. Seas 1 ft or less.

      ⇑SSW 6kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:20 am EDT Aug 15, 2026
Forecast Valid: 5am EDT Aug 15, 2026-6pm EDT Aug 21, 2026

View Nearby Observations

Detailed Forecast


Today
NE wind 5 to 8 kt becoming variable and less than 5 kt in the afternoon. Sunny. Seas 1 ft or less.
Tonight
Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.
Sunday
Variable winds less than 5 kt becoming S 6 to 11 kt in the morning. A chance of showers after 5pm. Seas 1 ft or less.
Sunday Night
SSE wind 12 to 14 kt, with gusts as high as 22 kt. Showers before 11pm, then showers and possibly a thunderstorm between 11pm and 2am, then showers after 2am. Seas 1 ft or less.
Monday
NE wind 7 to 10 kt becoming N in the morning. A slight chance of showers before 2pm. Seas 1 ft or less.
Monday Night
N wind around 6 kt. Partly cloudy. Seas 1 ft or less.
Tuesday
N wind around 6 kt becoming variable and less than 5 kt in the morning. Sunny. Seas 1 ft or less.
Tuesday Night
Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.
Wednesday
Variable winds less than 5 kt becoming SSW around 6 kt 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: 2:20 am EDT Aug 15, 2026
Forecast Valid: 5am EDT Aug 15, 2026-6pm EDT Aug 21, 2026
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