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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]
    • Today

      Today:NE wind around 8 kt becoming SE in the afternoon. Sunny. Seas around 2 ft.

      NE 8kt
      2ft

    • Tonight

      Tonight:S wind 5 to 8 kt becoming variable and less than 5 kt after midnight. Clear. Seas around 2 ft.

      S 8kt⇓
      2ft

    • Monday

      Monday:Variable winds less than 5 kt becoming S 6 to 11 kt in the afternoon. Sunny. Seas around 2 ft.

      ⇑S 11kt
      2ft

    • Monday Night

      Monday Night:SSW wind 12 to 14 kt becoming WSW after midnight. Mostly clear. Seas around 3 ft.

      SSW 14kt
      3ft

    • Tuesday

      Tuesday:WSW wind 11 to 16 kt becoming SSW in the afternoon. Sunny. Seas 2 to 3 ft.

      SSW 16kt
      2-3ft

    • Tuesday Night

      Tuesday Night:WSW wind 18 to 20 kt. Mostly clear. Seas around 4 ft.

      WSW 20kt
      4ft

    • Wednesday

      Wednesday:SW wind around 15 kt. Sunny. Seas around 3 ft.

      SW 15kt
      3ft

    • Wednesday Night

      Wednesday Night:NW wind 11 to 14 kt decreasing to 8 to 11 kt after midnight. Partly cloudy. Seas around 3 ft.

      NW 14kt⇓
      3ft

    • Thursday

      Thursday:WNW wind 6 to 11 kt becoming SW in the afternoon. Mostly sunny. Seas around 2 ft.

      SW 11kt
      2ft


Associated Zone Forecast which includes this point

Last Update: 2:32 am EDT Jul 12, 2026
Forecast Valid: 5am EDT Jul 12, 2026-6pm EDT Jul 18, 2026

View Nearby Observations

Detailed Forecast


Today
NE wind around 8 kt becoming SE in the afternoon. Sunny. Seas around 2 ft.
Tonight
S wind 5 to 8 kt becoming variable and less than 5 kt after midnight. Clear. Seas around 2 ft.
Monday
Variable winds less than 5 kt becoming S 6 to 11 kt in the afternoon. Sunny. Seas around 2 ft.
Monday Night
SSW wind 12 to 14 kt becoming WSW after midnight. Mostly clear. Seas around 3 ft.
Tuesday
WSW wind 11 to 16 kt becoming SSW in the afternoon. Sunny. Seas 2 to 3 ft.
Tuesday Night
WSW wind 18 to 20 kt. Mostly clear. Seas around 4 ft.
Wednesday
SW wind around 15 kt. Sunny. Seas around 3 ft.
Wednesday Night
NW wind 11 to 14 kt decreasing to 8 to 11 kt after midnight. Partly cloudy. Seas around 3 ft.
Thursday
WNW wind 6 to 11 kt becoming SW in the afternoon. Mostly sunny. Seas around 2 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: 2:32 am EDT Jul 12, 2026
Forecast Valid: 5am EDT Jul 12, 2026-6pm EDT Jul 18, 2026
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