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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]
    • Today

      Today:NE wind 6 to 8 kt becoming S in the afternoon. Mostly sunny. Seas around 2 ft.

      S 8kt
      2ft

    • Tonight

      Tonight:S wind 7 to 9 kt becoming ESE after midnight. A slight chance of rain after 5am.   Seas around 2 ft.

      S 9kt
      2ft

    • Saturday

      Saturday:ESE wind 14 to 16 kt. Rain, mainly after 8am.   Seas 2 to 3 ft.

      ESE 16kt
      2-3ft

    • Saturday Night

      Saturday Night:E wind 15 to 18 kt. Rain.   Seas 3 to 4 ft.

      E 18kt
      3-4ft

    • Sunday

      Sunday:ENE wind around 21 kt. Rain likely, mainly before 8am.   Seas 4 to 5 ft.

      ENE 21kt
      4-5ft

    • Sunday Night

      Sunday Night:NE wind around 19 kt. Partly cloudy. Seas around 5 ft.

      NE 19kt
      5ft

    • Monday

      Monday:NE wind 15 to 19 kt. Sunny. Seas 4 to 5 ft.

      NE 19kt
      4-5ft

    • Monday Night

      Monday Night:NE wind 8 to 12 kt. Partly cloudy. Seas 3 to 4 ft.

      NE 12kt
      3-4ft

    • Tuesday

      Tuesday:NE wind 8 to 12 kt becoming E in the afternoon. A chance of showers.   Seas around 3 ft.

      E 12kt
      3ft


Associated Zone Forecast which includes this point

Last Update: 7:02 am EDT Apr 24, 2026
Forecast Valid: 10am EDT Apr 24, 2026-6pm EDT Apr 30, 2026

View Nearby Observations

Detailed Forecast


Today
NE wind 6 to 8 kt becoming S in the afternoon. Mostly sunny. Seas around 2 ft.
Tonight
S wind 7 to 9 kt becoming ESE after midnight. A slight chance of rain after 5am. Seas around 2 ft.
Saturday
ESE wind 14 to 16 kt. Rain, mainly after 8am. Seas 2 to 3 ft.
Saturday Night
E wind 15 to 18 kt. Rain. Seas 3 to 4 ft.
Sunday
ENE wind around 21 kt. Rain likely, mainly before 8am. Seas 4 to 5 ft.
Sunday Night
NE wind around 19 kt. Partly cloudy. Seas around 5 ft.
Monday
NE wind 15 to 19 kt. Sunny. Seas 4 to 5 ft.
Monday Night
NE wind 8 to 12 kt. Partly cloudy. Seas 3 to 4 ft.
Tuesday
NE wind 8 to 12 kt becoming E in the afternoon. A chance of showers. Seas around 3 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: 40.53°N 73.44°W
Last Update: 7:02 am EDT Apr 24, 2026
Forecast Valid: 10am EDT Apr 24, 2026-6pm EDT Apr 30, 2026
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