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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]
    • Today

      Today:W wind 7 to 10 kt. Patchy smoke.  Seas 1 ft or less.

      W 10kt
      < 1ft

    • Tonight

      Tonight:NNW wind 8 to 11 kt decreasing to 5 to 8 kt after midnight. Widespread smoke, mainly after midnight.  Seas 1 ft or less.

      NNW 11kt⇓
      < 1ft

    • Friday

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

      Light Wind
      < 1ft

    • Friday Night

      Friday Night:S wind around 6 kt. Partly cloudy. Seas 1 ft or less.

      S 6kt
      < 1ft

    • Saturday

      Saturday:SSW wind 6 to 9 kt increasing to 10 to 13 kt in the afternoon. Showers, with thunderstorms also possible after 5pm.   Seas 1 ft or less.

      ⇑SSW 13kt
      < 1ft

    • Saturday Night

      Saturday Night:S wind around 13 kt becoming SW after midnight. Showers before 8pm, then showers and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am.   Seas 1 ft or less.

      SSW 13kt
      < 1ft

    • Sunday

      Sunday:NW wind 7 to 11 kt. A chance of showers before 8am.   Seas 1 ft or less.

      NW 11kt
      < 1ft

    • Sunday Night

      Sunday Night:NNW wind 6 to 8 kt. Mostly clear. Seas 1 ft or less.

      NNW 8kt
      < 1ft

    • Monday

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

      Light Wind
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 4:57 am EDT Jul 16, 2026
Forecast Valid: 11am EDT Jul 16, 2026-6pm EDT Jul 22, 2026

View Nearby Observations

Detailed Forecast


Today
W wind 7 to 10 kt. Patchy smoke. Seas 1 ft or less.
Tonight
NNW wind 8 to 11 kt decreasing to 5 to 8 kt after midnight. Widespread smoke, mainly after midnight. Seas 1 ft or less.
Friday
Variable winds 5 kt or less. Mostly sunny. Seas 1 ft or less.
Friday Night
S wind around 6 kt. Partly cloudy. Seas 1 ft or less.
Saturday
SSW wind 6 to 9 kt increasing to 10 to 13 kt in the afternoon. Showers, with thunderstorms also possible after 5pm. Seas 1 ft or less.
Saturday Night
S wind around 13 kt becoming SW after midnight. Showers before 8pm, then showers and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Seas 1 ft or less.
Sunday
NW wind 7 to 11 kt. A chance of showers before 8am. Seas 1 ft or less.
Sunday Night
NNW wind 6 to 8 kt. Mostly clear. Seas 1 ft or less.
Monday
Variable winds 5 kt or less. 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: 4:57 am EDT Jul 16, 2026
Forecast Valid: 11am EDT Jul 16, 2026-6pm EDT Jul 22, 2026
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