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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:SE wind 12 to 14 kt, with gusts as high as 21 kt. A chance of showers and thunderstorms.   Seas around 2 ft.

      SE 14kt
      2ft

      Small Craft Advisory
      Small Craft Advisory

    • Tonight

      Tonight:S wind 13 to 17 kt, with gusts as high as 24 kt. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8pm.   Seas around 4 ft.

      S 17kt
      4ft

      Small Craft Advisory
      Small Craft Advisory

    • Tuesday

      Tuesday:SW wind around 9 kt becoming NNW in the afternoon. Showers likely and possibly a thunderstorm before 2pm, then a chance of showers.   Seas around 3 ft.

      NW 9kt
      3ft

    • Tuesday Night

      Tuesday Night:NNW wind 7 to 10 kt. A slight chance of showers before 8pm.   Seas around 3 ft.

      NNW 10kt
      3ft

    • Wednesday

      Wednesday:NW wind 7 to 10 kt becoming WSW in the afternoon. Sunny. Seas 2 to 3 ft.

      WSW 10kt
      2-3ft

    • Wednesday Night

      Wednesday Night:SW wind 6 to 11 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas 2 to 3 ft.

      SW 11kt⇓
      2-3ft

    • Thursday

      Thursday:Variable winds less than 5 kt becoming S 8 to 13 kt in the afternoon. Mostly sunny. Seas around 2 ft.

      ⇑S 13kt
      2ft

    • Thursday Night

      Thursday Night:S wind 13 to 16 kt. A chance of showers, with thunderstorms also possible after 2am.   Seas 2 to 3 ft.

      S 16kt
      2-3ft

    • Friday

      Friday:S wind 11 to 13 kt. A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm.   Seas around 2 ft.

      S 13kt
      2ft


Associated Zone Forecast which includes this point

Last Update: 7:08 am EDT Jun 22, 2026
Forecast Valid: 2pm EDT Jun 22, 2026-6pm EDT Jun 28, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM EDT THIS AFTERNOON

This Afternoon
SE wind 12 to 14 kt, with gusts as high as 21 kt. A chance of showers and thunderstorms. Seas around 2 ft.
Tonight
S wind 13 to 17 kt, with gusts as high as 24 kt. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8pm. Seas around 4 ft.
Tuesday
SW wind around 9 kt becoming NNW in the afternoon. Showers likely and possibly a thunderstorm before 2pm, then a chance of showers. Seas around 3 ft.
Tuesday Night
NNW wind 7 to 10 kt. A slight chance of showers before 8pm. Seas around 3 ft.
Wednesday
NW wind 7 to 10 kt becoming WSW in the afternoon. Sunny. Seas 2 to 3 ft.
Wednesday Night
SW wind 6 to 11 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas 2 to 3 ft.
Thursday
Variable winds less than 5 kt becoming S 8 to 13 kt in the afternoon. Mostly sunny. Seas around 2 ft.
Thursday Night
S wind 13 to 16 kt. A chance of showers, with thunderstorms also possible after 2am. Seas 2 to 3 ft.
Friday
S wind 11 to 13 kt. A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. 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: 7:08 am EDT Jun 22, 2026
Forecast Valid: 2pm EDT Jun 22, 2026-6pm EDT Jun 28, 2026
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