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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

    • Today

      Today:ENE wind around 6 kt becoming variable and less than 5 kt in the afternoon. Mostly cloudy. Seas 1 ft or less.

      ENE 6kt⇓
      < 1ft

    • Tonight

      Tonight:E wind around 6 kt. A slight chance of showers before 11pm, then a chance of showers and thunderstorms between 11pm and 2am, then showers likely and possibly a thunderstorm after 2am. Patchy fog after 2am. Seas 1 ft or less.

      E 6kt
      < 1ft

    • Sunday

      Sunday:ESE wind 5 to 8 kt becoming SSW in the afternoon. A chance of showers before 2pm, then a chance of showers and thunderstorms between 2pm and 5pm, then a chance of showers after 5pm. Patchy fog before 9am. Seas 1 ft or less.

      SSW 8kt
      < 1ft

    • Sunday Night

      Sunday Night:WSW wind 6 to 9 kt. A slight chance of showers before 8pm, then a slight chance of showers and thunderstorms between 8pm and 2am. Seas 1 ft or less.

      WSW 9kt
      < 1ft

    • Monday

      Monday:WSW wind 6 to 9 kt. A slight chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

      WSW 9kt
      < 1ft

    • Monday Night

      Monday Night:W wind around 8 kt. Mostly clear. Seas 1 ft or less.

      W 8kt
      < 1ft

    • Tuesday

      Tuesday:W wind around 8 kt. Sunny. Seas 1 ft or less.

      W 8kt
      < 1ft

    • Tuesday Night

      Tuesday Night:W wind around 6 kt. Mostly clear. Seas 1 ft or less.

      W 6kt
      < 1ft

    • Wednesday

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

      Light Wind
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 3:42 am EDT Aug 22, 2026
Forecast Valid: 10am EDT Aug 22, 2026-6pm EDT Aug 28, 2026

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Detailed Forecast


Today
ENE wind around 6 kt becoming variable and less than 5 kt in the afternoon. Mostly cloudy. Seas 1 ft or less.
Tonight
E wind around 6 kt. A slight chance of showers before 11pm, then a chance of showers and thunderstorms between 11pm and 2am, then showers likely and possibly a thunderstorm after 2am. Patchy fog after 2am. Seas 1 ft or less.
Sunday
ESE wind 5 to 8 kt becoming SSW in the afternoon. A chance of showers before 2pm, then a chance of showers and thunderstorms between 2pm and 5pm, then a chance of showers after 5pm. Patchy fog before 9am. Seas 1 ft or less.
Sunday Night
WSW wind 6 to 9 kt. A slight chance of showers before 8pm, then a slight chance of showers and thunderstorms between 8pm and 2am. Seas 1 ft or less.
Monday
WSW wind 6 to 9 kt. A slight chance of showers and thunderstorms after 2pm. Seas 1 ft or less.
Monday Night
W wind around 8 kt. Mostly clear. Seas 1 ft or less.
Tuesday
W wind around 8 kt. Sunny. Seas 1 ft or less.
Tuesday Night
W wind around 6 kt. Mostly clear. Seas 1 ft or less.
Wednesday
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: 3:42 am EDT Aug 22, 2026
Forecast Valid: 10am EDT Aug 22, 2026-6pm EDT Aug 28, 2026
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