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Hazardous Weather Conditions

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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]

    • This Afternoon

      This Afternoon:SW wind around 11 kt. Sunny. Seas around 2 ft.

      SW 11kt
      2ft

    • Tonight

      Tonight:WSW wind 10 to 13 kt decreasing to 7 to 10 kt after midnight. Mostly clear. Seas around 2 ft.

      WSW 13kt⇓
      2ft

    • Sunday

      Sunday:S wind 8 to 13 kt increasing to 14 to 19 kt in the afternoon. Increasing clouds. Seas 2 to 3 ft.

      ⇑S 19kt
      2-3ft

      Small Craft Advisory
      Small Craft Advisory

    • Sunday Night

      Sunday Night:S wind 19 to 22 kt becoming SW 15 to 18 kt after midnight. Winds could gust as high as 29 kt. Showers and possibly a thunderstorm before 11pm, then a chance of showers and thunderstorms between 11pm and 2am, then a slight chance of showers after 2am. Seas 4 to 5 ft.

      S 22kt⇓
      4-5ft

      Small Craft Advisory
      Small Craft Advisory

    • Monday

      Monday:W wind 11 to 15 kt. Mostly sunny. Seas around 3 ft.

      W 15kt
      3ft

    • Monday Night

      Monday Night:WNW wind 6 to 10 kt becoming NNW after midnight. Partly cloudy. Seas around 3 ft.

      WNW 10kt
      3ft

    • Tuesday

      Tuesday:Variable winds less than 5 kt becoming S 7 to 12 kt in the morning. Mostly sunny. Seas around 2 ft.

      ⇑S 12kt
      2ft

    • Tuesday Night

      Tuesday Night:S wind 9 to 12 kt decreasing to 6 to 9 kt after midnight. Partly cloudy. Seas 2 to 3 ft.

      S 12kt⇓
      2-3ft

    • Wednesday

      Wednesday:SSE wind 5 to 8 kt increasing to 10 to 13 kt in the afternoon. A chance of showers. Seas 2 to 3 ft.

      ⇑SSE 13kt
      2-3ft


Associated Zone Forecast which includes this point

Last Update: 2:23 pm EDT Jun 13, 2026
Forecast Valid: 3pm EDT Jun 13, 2026-6pm EDT Jun 20, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY AFTERNOON THROUGH

This Afternoon
SW wind around 11 kt. Sunny. Seas around 2 ft.
Tonight
WSW wind 10 to 13 kt decreasing to 7 to 10 kt after midnight. Mostly clear. Seas around 2 ft.
Sunday
S wind 8 to 13 kt increasing to 14 to 19 kt in the afternoon. Increasing clouds. Seas 2 to 3 ft.
Sunday Night
S wind 19 to 22 kt becoming SW 15 to 18 kt after midnight. Winds could gust as high as 29 kt. Showers and possibly a thunderstorm before 11pm, then a chance of showers and thunderstorms between 11pm and 2am, then a slight chance of showers after 2am. Seas 4 to 5 ft.
Monday
W wind 11 to 15 kt. Mostly sunny. Seas around 3 ft.
Monday Night
WNW wind 6 to 10 kt becoming NNW after midnight. Partly cloudy. Seas around 3 ft.
Tuesday
Variable winds less than 5 kt becoming S 7 to 12 kt in the morning. Mostly sunny. Seas around 2 ft.
Tuesday Night
S wind 9 to 12 kt decreasing to 6 to 9 kt after midnight. Partly cloudy. Seas 2 to 3 ft.
Wednesday
SSE wind 5 to 8 kt increasing to 10 to 13 kt in the afternoon. A chance of showers. Seas 2 to 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: 2:23 pm EDT Jun 13, 2026
Forecast Valid: 3pm EDT Jun 13, 2026-6pm EDT Jun 20, 2026
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