National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

    • This Afternoon

      This Afternoon:SSE wind around 11 kt. A chance of showers and thunderstorms after 5pm. Seas 1 ft or less.

      SSE 11kt
      < 1ft

    • Tonight

      Tonight:SSE wind 9 to 14 kt becoming S after midnight. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8pm. Seas 1 ft or less.

      S 14kt
      < 1ft

    • Monday

      Monday:SSW wind 9 to 13 kt. Showers and possibly a thunderstorm before 2pm, then a chance of showers and thunderstorms between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Seas 1 ft or less.

      SSW 13kt
      < 1ft

    • Monday Night

      Monday Night:SSW wind around 7 kt becoming NNW after midnight. Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Seas 1 ft or less.

      SSW 7kt
      < 1ft

    • Tuesday

      Tuesday:N wind around 6 kt becoming ESE in the afternoon. Mostly sunny. Seas 1 ft or less.

      N 6kt
      < 1ft

    • Tuesday Night

      Tuesday Night:Variable winds 5 kt or less. Mostly cloudy. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Wednesday

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

      Light Wind
      < 1ft

    • Wednesday Night

      Wednesday Night:S wind 5 to 7 kt. Partly cloudy. Seas 1 ft or less.

      S 7kt
      < 1ft

    • Thursday

      Thursday:SSW wind 5 to 8 kt. A chance of showers. Seas 1 ft or less.

      SSW 8kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 7:44 am EDT Aug 2, 2026
Forecast Valid: 1pm EDT Aug 2, 2026-6pm EDT Aug 8, 2026

View Nearby Observations

Detailed Forecast


This Afternoon
SSE wind around 11 kt. A chance of showers and thunderstorms after 5pm. Seas 1 ft or less.
Tonight
SSE wind 9 to 14 kt becoming S after midnight. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8pm. Seas 1 ft or less.
Monday
SSW wind 9 to 13 kt. Showers and possibly a thunderstorm before 2pm, then a chance of showers and thunderstorms between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Seas 1 ft or less.
Monday Night
SSW wind around 7 kt becoming NNW after midnight. Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Seas 1 ft or less.
Tuesday
N wind around 6 kt becoming ESE in the afternoon. Mostly sunny. Seas 1 ft or less.
Tuesday Night
Variable winds 5 kt or less. Mostly cloudy. Seas 1 ft or less.
Wednesday
Variable winds 5 kt or less. Partly sunny. Seas 1 ft or less.
Wednesday Night
S wind 5 to 7 kt. Partly cloudy. Seas 1 ft or less.
Thursday
SSW wind 5 to 8 kt. A chance of showers. 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: 7:44 am EDT Aug 2, 2026
Forecast Valid: 1pm EDT Aug 2, 2026-6pm EDT Aug 8, 2026
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