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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

    • Today

      Today:S wind 5 to 9 kt becoming NNE in the afternoon. Showers and thunderstorms likely before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Seas 1 ft or less.

      S 9kt
      < 1ft

    • Tonight

      Tonight:N wind 7 to 10 kt becoming NW after midnight. A chance of showers and thunderstorms before 11pm, then a slight chance of showers. Seas 1 ft or less.

      NW 10kt
      < 1ft

    • Thursday

      Thursday:NNW wind 9 to 11 kt. A chance of showers between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

      NNW 11kt
      < 1ft

    • Thursday Night

      Thursday Night:N wind around 9 kt. A slight chance of thunderstorms before 8pm. Seas 1 ft or less.

      N 9kt
      < 1ft

    • Friday

      Friday:N wind 5 to 7 kt becoming variable and less than 5 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

      N 7kt⇓
      < 1ft

    • Friday Night

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

      Light Wind
      < 1ft

    • Saturday

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

      Light Wind
      < 1ft

    • Saturday Night

      Saturday Night:S wind 5 to 8 kt. Mostly cloudy. Seas 1 ft or less.

      S 8kt
      < 1ft

    • Sunday

      Sunday:Variable winds less than 5 kt becoming S 5 to 9 kt in the morning. Partly sunny. Seas 1 ft or less.

      ⇑S 9kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:23 am EDT Jul 29, 2026
Forecast Valid: 6am EDT Jul 29, 2026-6pm EDT Aug 4, 2026

View Nearby Observations

Detailed Forecast


Today
S wind 5 to 9 kt becoming NNE in the afternoon. Showers and thunderstorms likely before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Seas 1 ft or less.
Tonight
N wind 7 to 10 kt becoming NW after midnight. A chance of showers and thunderstorms before 11pm, then a slight chance of showers. Seas 1 ft or less.
Thursday
NNW wind 9 to 11 kt. A chance of showers between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. Seas 1 ft or less.
Thursday Night
N wind around 9 kt. A slight chance of thunderstorms before 8pm. Seas 1 ft or less.
Friday
N wind 5 to 7 kt becoming variable and less than 5 kt in the afternoon. Mostly sunny. Seas 1 ft or less.
Friday Night
Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.
Saturday
Variable winds 5 kt or less. Mostly sunny. Seas 1 ft or less.
Saturday Night
S wind 5 to 8 kt. Mostly cloudy. Seas 1 ft or less.
Sunday
Variable winds less than 5 kt becoming S 5 to 9 kt in the morning. Partly 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: 2:23 am EDT Jul 29, 2026
Forecast Valid: 6am EDT Jul 29, 2026-6pm EDT Aug 4, 2026
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