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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]
    • Today

      Today:S wind 8 to 13 kt, with gusts as high as 21 kt. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm.   Seas 1 ft or less.

      S 13kt
      < 1ft

    • Tonight

      Tonight:SSE wind 12 to 14 kt, with gusts as high as 22 kt. Showers and possibly a thunderstorm, mainly before 5am, then a chance of showers and thunderstorms after 5am.   Seas 1 ft or less.

      SSE 14kt
      < 1ft

    • Wednesday

      Wednesday:SE wind around 8 kt becoming SSW in the afternoon. Showers 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.

      SE 8kt
      < 1ft

    • Wednesday Night

      Wednesday Night:N wind around 10 kt becoming NNW in the evening. Showers and thunderstorms likely.   Seas 1 ft or less.

      N 10kt
      < 1ft

    • Thursday

      Thursday:NNW wind 9 to 11 kt. Showers likely, with thunderstorms also possible after 2pm.   Seas 1 ft or less.

      NNW 11kt
      < 1ft

    • Thursday Night

      Thursday Night:N wind 8 to 10 kt. Mostly cloudy. Seas 1 ft or less.

      N 10kt
      < 1ft

    • Friday

      Friday:N wind 5 to 9 kt. Mostly sunny. Seas 1 ft or less.

      N 9kt
      < 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


Associated Zone Forecast which includes this point

Last Update: 2:31 am EDT Jul 28, 2026
Forecast Valid: 9am EDT Jul 28, 2026-6pm EDT Aug 3, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EDT TODAY THROUGH

Today
S wind 8 to 13 kt, with gusts as high as 21 kt. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Seas 1 ft or less.
Tonight
SSE wind 12 to 14 kt, with gusts as high as 22 kt. Showers and possibly a thunderstorm, mainly before 5am, then a chance of showers and thunderstorms after 5am. Seas 1 ft or less.
Wednesday
SE wind around 8 kt becoming SSW in the afternoon. Showers 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.
Wednesday Night
N wind around 10 kt becoming NNW in the evening. Showers and thunderstorms likely. Seas 1 ft or less.
Thursday
NNW wind 9 to 11 kt. Showers likely, with thunderstorms also possible after 2pm. Seas 1 ft or less.
Thursday Night
N wind 8 to 10 kt. Mostly cloudy. Seas 1 ft or less.
Friday
N wind 5 to 9 kt. 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.

*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: 2:31 am EDT Jul 28, 2026
Forecast Valid: 9am EDT Jul 28, 2026-6pm EDT Aug 3, 2026
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