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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

    • Sunday

      Sunday:Variable winds less than 5 kt becoming E around 6 kt in the afternoon. A slight chance of showers, then a chance of showers and thunderstorms after 11am. Seas 1 ft or less.

      ⇑E 6kt
      < 1ft

    • Sunday Night

      Sunday Night:E wind 7 to 9 kt. Showers and possibly a thunderstorm. Seas around 1 ft.

      E 9kt
      1ft

    • Monday

      Monday:E wind 14 to 16 kt, with gusts as high as 23 kt. Showers and possibly a thunderstorm. Seas 1 to 2 ft.

      E 16kt
      1-2ft

    • Monday Night

      Monday Night:E wind around 16 kt, with gusts as high as 24 kt. Showers and possibly a thunderstorm. Seas around 2 ft.

      E 16kt
      2ft

    • Tuesday

      Tuesday:NE wind 12 to 15 kt. Showers likely and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. Seas 1 to 2 ft.

      NE 15kt
      1-2ft

    • Tuesday Night

      Tuesday Night:NE wind 9 to 11 kt. A chance of showers before midnight. Seas around 1 ft.

      NE 11kt
      1ft

    • Wednesday

      Wednesday:NE wind 5 to 8 kt becoming variable and less than 5 kt in the afternoon. Partly sunny. Seas 1 ft or less.

      NE 8kt⇓
      < 1ft

    • Wednesday Night

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

      Light Wind
      < 1ft

    • Thursday

      Thursday:Variable winds less than 5 kt becoming SSW 5 to 8 kt in the morning. Mostly sunny. Seas 1 ft or less.

      ⇑SSW 8kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 3:53 am EDT Jul 5, 2026
Forecast Valid: 4am EDT Jul 5, 2026-6pm EDT Jul 11, 2026

View Nearby Observations

Detailed Forecast


Sunday
Variable winds less than 5 kt becoming E around 6 kt in the afternoon. A slight chance of showers, then a chance of showers and thunderstorms after 11am. Seas 1 ft or less.
Sunday Night
E wind 7 to 9 kt. Showers and possibly a thunderstorm. Seas around 1 ft.
Monday
E wind 14 to 16 kt, with gusts as high as 23 kt. Showers and possibly a thunderstorm. Seas 1 to 2 ft.
Monday Night
E wind around 16 kt, with gusts as high as 24 kt. Showers and possibly a thunderstorm. Seas around 2 ft.
Tuesday
NE wind 12 to 15 kt. Showers likely and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. Seas 1 to 2 ft.
Tuesday Night
NE wind 9 to 11 kt. A chance of showers before midnight. Seas around 1 ft.
Wednesday
NE wind 5 to 8 kt becoming variable and less than 5 kt in the afternoon. Partly sunny. Seas 1 ft or less.
Wednesday Night
Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.
Thursday
Variable winds less than 5 kt becoming SSW 5 to 8 kt in the morning. Mostly 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: 3:53 am EDT Jul 5, 2026
Forecast Valid: 4am EDT Jul 5, 2026-6pm EDT Jul 11, 2026
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