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New York, NY Local Forecast Office

7NM S Islip NY

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:NW wind around 21 kt. Sunny. Seas 3 to 4 ft.

      NW 21kt
      3-4ft

      Small Craft Advisory
      Small Craft Advisory

    • Tonight

      Tonight:NW wind 11 to 16 kt decreasing to 5 to 10 kt after midnight. Mostly clear. Seas 3 ft subsiding to 1 ft.

      NW 16kt⇓
      3ftWaves Subsiding

      Small Craft Advisory
      Small Craft Advisory

    • Friday

      Friday:SSW wind 7 to 12 kt increasing to 20 to 25 kt. Mostly sunny. Seas 1 ft building to 6 ft.

      ⇑SSW 25kt
      Waves Building6ft

    • Friday Night

      Friday Night:SSW wind 27 to 30 kt becoming WSW 21 to 24 kt after midnight. Light rain likely, mainly after 10pm.   Seas 8 ft subsiding to 6 ft.

      SSW 30kt⇓
      8ftWaves Subsiding

    • Saturday

      Saturday:W wind 10 to 14 kt. A chance of light rain before 1pm.   Seas 5 ft subsiding to 3 ft.

      W 14kt
      5ftWaves Subsiding

    • Saturday Night

      Saturday Night:W wind 8 to 10 kt becoming E after midnight. Partly cloudy. Seas around 3 ft.

      ESE 10kt
      3ft

    • Sunday

      Sunday:ESE wind 14 to 17 kt becoming SSE 17 to 20 kt in the afternoon. Rain.   Seas 3 ft building to 5 ft.

      ⇑SSE 20kt
      Waves Building5ft

    • Sunday Night

      Sunday Night:S wind 15 to 17 kt becoming W after midnight. Rain likely.   Seas 4 to 5 ft.

      S 17kt
      4-5ft

    • Monday

      Monday:W wind 17 to 19 kt. A chance of rain.   Seas around 4 ft.

      W 19kt
      4ft


Associated Zone Forecast which includes this point

Last Update: 1:21 pm EST Nov 6, 2025
Forecast Valid: 2pm EST Nov 6, 2025-6pm EST Nov 12, 2025

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EST THIS EVENING...

This Afternoon
NW wind around 21 kt. Sunny. Seas 3 to 4 ft.
Tonight
NW wind 11 to 16 kt decreasing to 5 to 10 kt after midnight. Mostly clear. Seas 3 ft subsiding to 1 ft.
Friday
SSW wind 7 to 12 kt increasing to 20 to 25 kt. Mostly sunny. Seas 1 ft building to 6 ft.
Friday Night
SSW wind 27 to 30 kt becoming WSW 21 to 24 kt after midnight. Light rain likely, mainly after 10pm. Seas 8 ft subsiding to 6 ft.
Saturday
W wind 10 to 14 kt. A chance of light rain before 1pm. Seas 5 ft subsiding to 3 ft.
Saturday Night
W wind 8 to 10 kt becoming E after midnight. Partly cloudy. Seas around 3 ft.
Sunday
ESE wind 14 to 17 kt becoming SSE 17 to 20 kt in the afternoon. Rain. Seas 3 ft building to 5 ft.
Sunday Night
S wind 15 to 17 kt becoming W after midnight. Rain likely. Seas 4 to 5 ft.
Monday
W wind 17 to 19 kt. A chance of rain. Seas around 4 ft.

*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: 40.61°N 73.18°W
Last Update: 1:21 pm EST Nov 6, 2025
Forecast Valid: 2pm EST Nov 6, 2025-6pm EST Nov 12, 2025
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