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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]
    • This Afternoon

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

      Light Wind
      < 1ft

    • Tonight

      Tonight:SSE wind around 6 kt becoming SSW after midnight. A slight chance of showers and thunderstorms before 2am, then a slight chance of showers after 5am.   Seas 1 ft or less.

      SSE 6kt
      < 1ft

    • Thursday

      Thursday:SSW wind 5 to 8 kt. A slight chance of showers before 8am, then a slight chance of showers and thunderstorms after 2pm.   Seas 1 ft or less.

      SSW 8kt
      < 1ft

    • Thursday Night

      Thursday Night:SW wind 5 to 8 kt. Partly cloudy. Seas 1 ft or less.

      SW 8kt
      < 1ft

    • Friday

      Friday:WSW wind around 6 kt. A chance of showers and thunderstorms after 2pm.   Seas 1 ft or less.

      WSW 6kt
      < 1ft

    • Friday Night

      Friday Night:SW wind around 6 kt. A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am.   Seas 1 ft or less.

      SW 6kt
      < 1ft

    • Saturday

      Saturday:WSW wind 6 to 8 kt. Mostly sunny. Seas 1 ft or less.

      WSW 8kt
      < 1ft

    • Saturday Night

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

      SW 7kt
      < 1ft

    • Sunday

      Sunday:W wind 6 to 8 kt. Sunny. Seas 1 ft or less.

      W 8kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:06 pm EDT Aug 5, 2026
Forecast Valid: 3pm EDT Aug 5, 2026-6pm EDT Aug 12, 2026

View Nearby Observations

Detailed Forecast


This Afternoon
Variable winds 5 kt or less. Partly sunny. Seas 1 ft or less.
Tonight
SSE wind around 6 kt becoming SSW after midnight. A slight chance of showers and thunderstorms before 2am, then a slight chance of showers after 5am. Seas 1 ft or less.
Thursday
SSW wind 5 to 8 kt. A slight chance of showers before 8am, then a slight chance of showers and thunderstorms after 2pm. Seas 1 ft or less.
Thursday Night
SW wind 5 to 8 kt. Partly cloudy. Seas 1 ft or less.
Friday
WSW wind around 6 kt. A chance of showers and thunderstorms after 2pm. Seas 1 ft or less.
Friday Night
SW wind around 6 kt. A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Seas 1 ft or less.
Saturday
WSW wind 6 to 8 kt. Mostly sunny. Seas 1 ft or less.
Saturday Night
SW wind around 7 kt. A chance of showers. Seas 1 ft or less.
Sunday
W wind 6 to 8 kt. 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: 2:06 pm EDT Aug 5, 2026
Forecast Valid: 3pm EDT Aug 5, 2026-6pm EDT Aug 12, 2026
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