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Hazardous Weather Conditions

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New York, NY Local Forecast Office

13NM NNW Islip NY

Marine Point Forecast

[NOTICE]

    • Tonight

      Tonight:N wind 8 to 13 kt becoming NE after midnight. Winds could gust as high as 21 kt. Partly cloudy. Seas 1 ft or less.

      NE 13kt
      < 1ft

    • Saturday

      Saturday:NE wind 10 to 13 kt becoming E 7 to 10 kt in the afternoon. Winds could gust as high as 21 kt. Mostly sunny. Seas 1 to 2 ft.

      NE 13kt⇓
      1-2ft

    • Saturday Night

      Saturday Night:ESE wind around 8 kt. Mostly cloudy. Seas 1 ft or less.

      ESE 8kt
      < 1ft

    • Sunday

      Sunday:SE wind 8 to 13 kt becoming S in the afternoon. Winds could gust as high as 21 kt. A chance of showers, then showers and possibly a thunderstorm after 2pm. Seas 1 ft or less.

      S 13kt
      < 1ft

    • Sunday Night

      Sunday Night:S wind 5 to 8 kt becoming N 8 to 11 kt after midnight. Showers and possibly a thunderstorm before 2am, then a chance of showers. Seas 1 ft or less.

      ⇑N 11kt
      < 1ft

    • Monday

      Monday:NE wind 11 to 14 kt, with gusts as high as 21 kt. A chance of showers. Seas 1 to 2 ft.

      NE 14kt
      1-2ft

    • Monday Night

      Monday Night:NE wind 12 to 16 kt. A chance of showers before 2am. Seas 1 to 2 ft.

      NE 16kt
      1-2ft

    • Tuesday

      Tuesday:ENE wind 16 to 18 kt, with gusts as high as 26 kt. A chance of showers. Seas around 3 ft.

      ENE 18kt
      3ft

    • Tuesday Night

      Tuesday Night:ENE wind 19 to 21 kt, with gusts as high as 31 kt. Mostly cloudy. Seas around 3 ft.

      ENE 21kt
      3ft


Associated Zone Forecast which includes this point

Last Update: 3:10 pm EDT Sep 18, 2026
Forecast Valid: 8pm EDT Sep 18, 2026-6pm EDT Sep 25, 2026

View Nearby Observations

Detailed Forecast


Tonight
N wind 8 to 13 kt becoming NE after midnight. Winds could gust as high as 21 kt. Partly cloudy. Seas 1 ft or less.
Saturday
NE wind 10 to 13 kt becoming E 7 to 10 kt in the afternoon. Winds could gust as high as 21 kt. Mostly sunny. Seas 1 to 2 ft.
Saturday Night
ESE wind around 8 kt. Mostly cloudy. Seas 1 ft or less.
Sunday
SE wind 8 to 13 kt becoming S in the afternoon. Winds could gust as high as 21 kt. A chance of showers, then showers and possibly a thunderstorm after 2pm. Seas 1 ft or less.
Sunday Night
S wind 5 to 8 kt becoming N 8 to 11 kt after midnight. Showers and possibly a thunderstorm before 2am, then a chance of showers. Seas 1 ft or less.
Monday
NE wind 11 to 14 kt, with gusts as high as 21 kt. A chance of showers. Seas 1 to 2 ft.
Monday Night
NE wind 12 to 16 kt. A chance of showers before 2am. Seas 1 to 2 ft.
Tuesday
ENE wind 16 to 18 kt, with gusts as high as 26 kt. A chance of showers. Seas around 3 ft.
Tuesday Night
ENE wind 19 to 21 kt, with gusts as high as 31 kt. Mostly cloudy. Seas around 3 ft.

Winds and seas 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: 40.92°N 73.35°W
Last Update: 3:10 pm EDT Sep 18, 2026
Forecast Valid: 8pm EDT Sep 18, 2026-6pm EDT Sep 25, 2026
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