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Hazardous Weather Conditions

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New York, NY Local Forecast Office

11NM ESE Islip NY

Marine Point Forecast

[NOTICE]

    • This Afternoon

      This Afternoon:NNE wind around 14 kt, with gusts as high as 22 kt. A slight chance of showers. Seas around 1 ft.

      NNE 14kt
      1ft

    • Tonight

      Tonight:NNE wind 8 to 10 kt. Partly cloudy. Seas 1 ft or less.

      NNE 10kt
      < 1ft

    • Saturday

      Saturday:NE wind 7 to 9 kt becoming E in the afternoon. A chance of showers after 2pm. Seas 1 ft or less.

      NE 9kt
      < 1ft

    • Saturday Night

      Saturday Night:ESE wind around 9 kt becoming SSE after midnight. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8pm. Seas 1 ft or less.

      E 9kt
      < 1ft

    • Sunday

      Sunday:S wind 8 to 11 kt becoming SW in the morning. Showers likely and possibly a thunderstorm before 8am, then a chance of showers between 8am and 2pm, then a slight chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

      SSW 11kt
      < 1ft

    • Sunday Night

      Sunday Night:SW wind 9 to 11 kt becoming W after midnight. Partly cloudy. Seas 1 ft or less.

      SW 11kt
      < 1ft

    • Monday

      Monday:W wind 9 to 13 kt becoming WSW in the afternoon. Sunny. Seas 1 ft or less.

      WSW 13kt
      < 1ft

    • Monday Night

      Monday Night:WSW wind 9 to 11 kt becoming WNW after midnight. Mostly clear. Seas 1 ft or less.

      WSW 11kt
      < 1ft

    • Tuesday

      Tuesday:WNW wind 8 to 12 kt becoming WSW in the afternoon. Sunny. Seas 1 ft or less.

      WSW 12kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 3:45 am EDT Aug 21, 2026
Forecast Valid: 1pm EDT Aug 21, 2026-6pm EDT Aug 27, 2026

View Nearby Observations

Detailed Forecast

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

This Afternoon
NNE wind around 14 kt, with gusts as high as 22 kt. A slight chance of showers. Seas around 1 ft.
Tonight
NNE wind 8 to 10 kt. Partly cloudy. Seas 1 ft or less.
Saturday
NE wind 7 to 9 kt becoming E in the afternoon. A chance of showers after 2pm. Seas 1 ft or less.
Saturday Night
ESE wind around 9 kt becoming SSE after midnight. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8pm. Seas 1 ft or less.
Sunday
S wind 8 to 11 kt becoming SW in the morning. Showers likely and possibly a thunderstorm before 8am, then a chance of showers between 8am and 2pm, then a slight chance of showers and thunderstorms after 2pm. Seas 1 ft or less.
Sunday Night
SW wind 9 to 11 kt becoming W after midnight. Partly cloudy. Seas 1 ft or less.
Monday
W wind 9 to 13 kt becoming WSW in the afternoon. Sunny. Seas 1 ft or less.
Monday Night
WSW wind 9 to 11 kt becoming WNW after midnight. Mostly clear. Seas 1 ft or less.
Tuesday
WNW wind 8 to 12 kt becoming WSW in the afternoon. Sunny. Seas 1 ft or less.

*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: 40.7°N 72.99°W
Last Update: 3:45 am EDT Aug 21, 2026
Forecast Valid: 1pm EDT Aug 21, 2026-6pm EDT Aug 27, 2026
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