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Hazardous Weather Conditions

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New York, NY Local Forecast Office

9NM E Islip NY

Marine Point Forecast

[NOTICE]

    • This Afternoon

      This Afternoon:E wind around 16 kt, with gusts as high as 22 kt. Rain. Seas around 2 ft.

      E 16kt
      2ft

    • Tonight

      Tonight:E wind 14 to 17 kt becoming NNE after midnight. Winds could gust as high as 25 kt. Rain and thunderstorms before 2am, then rain likely and possibly a thunderstorm between 2am and 5am, then a chance of rain and thunderstorms after 5am. Seas around 2 ft.

      E 17kt
      2ft

    • Columbus Day

      Columbus Day:NNE wind 8 to 13 kt becoming N in the afternoon. A chance of rain before 8am. Seas around 1 ft.

      NNE 13kt
      1ft

    • Monday Night

      Monday Night:NNW wind around 6 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas 1 ft or less.

      NNW 6kt⇓
      < 1ft

    • Tuesday

      Tuesday:Variable winds less than 5 kt becoming SSE 5 to 9 kt in the morning. Sunny through mid morning, then becoming mostly cloudy. Seas 1 ft or less.

      ⇑SSE 9kt
      < 1ft

    • Tuesday Night

      Tuesday Night:SW wind 12 to 14 kt, with gusts as high as 21 kt. Partly cloudy. Seas 1 to 2 ft.

      SW 14kt
      1-2ft

    • Wednesday

      Wednesday:WSW wind around 11 kt. Sunny. Seas around 1 ft.

      WSW 11kt
      1ft

    • Wednesday Night

      Wednesday Night:WNW wind 7 to 9 kt becoming NNW after midnight. Mostly cloudy. Seas around 1 ft.

      NNW 9kt
      1ft

    • Thursday

      Thursday:N wind 9 to 13 kt. Mostly sunny. Seas around 1 ft.

      N 13kt
      1ft


Associated Zone Forecast which includes this point

Last Update: 3:09 pm EDT Oct 11, 2026
Forecast Valid: 3pm EDT Oct 11, 2026-6pm EDT Oct 18, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...

This Afternoon
E wind around 16 kt, with gusts as high as 22 kt. Rain. Seas around 2 ft.
Tonight
E wind 14 to 17 kt becoming NNE after midnight. Winds could gust as high as 25 kt. Rain and thunderstorms before 2am, then rain likely and possibly a thunderstorm between 2am and 5am, then a chance of rain and thunderstorms after 5am. Seas around 2 ft.
Columbus Day
NNE wind 8 to 13 kt becoming N in the afternoon. A chance of rain before 8am. Seas around 1 ft.
Monday Night
NNW wind around 6 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas 1 ft or less.
Tuesday
Variable winds less than 5 kt becoming SSE 5 to 9 kt in the morning. Sunny through mid morning, then becoming mostly cloudy. Seas 1 ft or less.
Tuesday Night
SW wind 12 to 14 kt, with gusts as high as 21 kt. Partly cloudy. Seas 1 to 2 ft.
Wednesday
WSW wind around 11 kt. Sunny. Seas around 1 ft.
Wednesday Night
WNW wind 7 to 9 kt becoming NNW after midnight. Mostly cloudy. Seas around 1 ft.
Thursday
N wind 9 to 13 kt. Mostly sunny. Seas around 1 ft.

Winds and waves may be higher in and near tstms.

*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: 40.75°N 73.01°W
Last Update: 3:09 pm EDT Oct 11, 2026
Forecast Valid: 3pm EDT Oct 11, 2026-6pm EDT Oct 18, 2026
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