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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]

    • Tonight

      Tonight:SW wind 12 to 15 kt, with gusts as high as 21 kt. Partly cloudy. Seas around 3 ft.

      SW 15kt
      3ft

    • Sunday

      Sunday:SW wind 9 to 14 kt becoming S in the afternoon. Winds could gust as high as 20 kt. Mostly sunny. Seas 2 to 3 ft.

      S 14kt
      2-3ft

    • Sunday Night

      Sunday Night:SSW wind 14 to 17 kt decreasing to 10 to 13 kt after midnight. Patchy fog after 2am. Seas 3 to 4 ft.

      SSW 17kt⇓
      3-4ft

    • Monday

      Monday:S wind 9 to 12 kt. A chance of showers and thunderstorms, mainly after 2pm. Patchy fog before 9am. Seas 2 to 3 ft.

      S 12kt
      2-3ft

    • Monday Night

      Monday Night:S wind 9 to 14 kt, with gusts as high as 20 kt. A chance of showers and thunderstorms. Seas around 4 ft.

      S 14kt
      4ft

    • Tuesday

      Tuesday:SSW wind around 10 kt. A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Seas around 3 ft.

      SSW 10kt
      3ft

    • Tuesday Night

      Tuesday Night:SW wind 7 to 9 kt. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Seas around 3 ft.

      SW 9kt
      3ft

    • Wednesday

      Wednesday:NW wind around 7 kt becoming S in the afternoon. Partly sunny. Seas 2 to 3 ft.

      SSW 7kt
      2-3ft

    • Wednesday Night

      Wednesday Night:S wind 5 to 8 kt becoming SE after midnight. Mostly cloudy. Seas around 3 ft.

      S 8kt
      3ft


Associated Zone Forecast which includes this point

Last Update: 1:44 pm EDT Jul 5, 2025
Forecast Valid: 8pm EDT Jul 5, 2025-6pm EDT Jul 12, 2025

View Nearby Observations

Detailed Forecast


Tonight
SW wind 12 to 15 kt, with gusts as high as 21 kt. Partly cloudy. Seas around 3 ft.
Sunday
SW wind 9 to 14 kt becoming S in the afternoon. Winds could gust as high as 20 kt. Mostly sunny. Seas 2 to 3 ft.
Sunday Night
SSW wind 14 to 17 kt decreasing to 10 to 13 kt after midnight. Patchy fog after 2am. Seas 3 to 4 ft.
Monday
S wind 9 to 12 kt. A chance of showers and thunderstorms, mainly after 2pm. Patchy fog before 9am. Seas 2 to 3 ft.
Monday Night
S wind 9 to 14 kt, with gusts as high as 20 kt. A chance of showers and thunderstorms. Seas around 4 ft.
Tuesday
SSW wind around 10 kt. A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Seas around 3 ft.
Tuesday Night
SW wind 7 to 9 kt. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Seas around 3 ft.
Wednesday
NW wind around 7 kt becoming S in the afternoon. Partly sunny. Seas 2 to 3 ft.
Wednesday Night
S wind 5 to 8 kt becoming SE after midnight. Mostly cloudy. Seas around 3 ft.

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: 40.53°N 73.44°W
Last Update: 1:44 pm EDT Jul 5, 2025
Forecast Valid: 8pm EDT Jul 5, 2025-6pm EDT Jul 12, 2025
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