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]

    • Today

      Today:SW wind 7 to 9 kt. A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Seas 1 ft or less.

      SW 9kt
      < 1ft

    • Tonight

      Tonight:SW wind 5 to 7 kt becoming variable and less than 5 kt after midnight. A chance of showers and thunderstorms. Seas 1 ft or less.

      SW 7kt⇓
      < 1ft

    • Monday

      Monday:Variable winds 5 kt or less. Increasing clouds. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Monday Night

      Monday Night:Variable winds 5 kt or less. Showers likely, mainly after 2am. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Tuesday

      Tuesday:Variable winds 5 kt or less. Showers likely, mainly after 2pm. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Tuesday Night

      Tuesday Night:SE wind around 6 kt becoming E after midnight. Showers likely, mainly before 8pm. Seas 1 ft or less.

      SE 6kt
      < 1ft

    • Wednesday

      Wednesday:ENE wind around 6 kt becoming ESE in the afternoon. A chance of showers after 8am. Seas 1 ft or less.

      E 6kt
      < 1ft

    • Wednesday Night

      Wednesday Night:ESE wind around 6 kt becoming variable and less than 5 kt after midnight. A chance of showers and thunderstorms, then showers likely after 2am. Seas 1 ft or less.

      ESE 6kt⇓
      < 1ft

    • Thursday

      Thursday:SSW wind around 6 kt. Showers likely. Seas 1 ft or less.

      SSW 6kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 7:25 am EDT Aug 30, 2026
Forecast Valid: 11am EDT Aug 30, 2026-6pm EDT Sep 5, 2026

View Nearby Observations

Detailed Forecast


Today
SW wind 7 to 9 kt. A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Seas 1 ft or less.
Tonight
SW wind 5 to 7 kt becoming variable and less than 5 kt after midnight. A chance of showers and thunderstorms. Seas 1 ft or less.
Monday
Variable winds 5 kt or less. Increasing clouds. Seas 1 ft or less.
Monday Night
Variable winds 5 kt or less. Showers likely, mainly after 2am. Seas 1 ft or less.
Tuesday
Variable winds 5 kt or less. Showers likely, mainly after 2pm. Seas 1 ft or less.
Tuesday Night
SE wind around 6 kt becoming E after midnight. Showers likely, mainly before 8pm. Seas 1 ft or less.
Wednesday
ENE wind around 6 kt becoming ESE in the afternoon. A chance of showers after 8am. Seas 1 ft or less.
Wednesday Night
ESE wind around 6 kt becoming variable and less than 5 kt after midnight. A chance of showers and thunderstorms, then showers likely after 2am. Seas 1 ft or less.
Thursday
SSW wind around 6 kt. Showers likely. 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: 7:25 am EDT Aug 30, 2026
Forecast Valid: 11am EDT Aug 30, 2026-6pm EDT Sep 5, 2026
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