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Hazardous Weather Conditions

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New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]

    • Friday

      Friday:NNE wind 18 to 20 kt, with gusts as high as 27 kt. A chance of showers after 2pm. Seas 1 ft or less.

      NNE 20kt
      < 1ft

    • Friday Night

      Friday Night:NNE wind 27 to 30 kt, with gusts as high as 38 kt. Rain, mainly after 11pm. Seas 1 ft or less.

      NNE 30kt
      < 1ft

    • Saturday

      Saturday:NNE wind 24 to 27 kt, with gusts as high as 39 kt. Rain. Seas 1 ft or less.

      NNE 27kt
      < 1ft

    • Saturday Night

      Saturday Night:N wind 27 to 30 kt, with gusts as high as 38 kt. Rain before 11pm, then rain and possibly a thunderstorm between 11pm and 2am, then rain after 2am. Seas 1 ft or less.

      N 30kt
      < 1ft

    • Sunday

      Sunday:N wind 20 to 25 kt, with gusts as high as 38 kt. Rain. Seas 1 ft or less.

      N 25kt
      < 1ft

    • Sunday Night

      Sunday Night:NNE wind 19 to 22 kt, with gusts as high as 30 kt. Rain. Seas 1 ft or less.

      NNE 22kt
      < 1ft

    • Monday

      Monday:N wind 13 to 16 kt. Showers likely, mainly before 8am. Seas 1 ft or less.

      N 16kt
      < 1ft

    • Monday Night

      Monday Night:N wind 6 to 9 kt. Mostly cloudy. Seas 1 ft or less.

      N 9kt
      < 1ft

    • Tuesday

      Tuesday:NW wind 5 to 7 kt becoming W in the afternoon. Partly sunny. Seas 1 ft or less.

      W 7kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:36 am EDT Sep 25, 2026
Forecast Valid: 4am EDT Sep 25, 2026-6pm EDT Oct 1, 2026

View Nearby Observations

Detailed Forecast

...GALE WARNING IN EFFECT THROUGH THIS AFTERNOON...

Friday
NNE wind 18 to 20 kt, with gusts as high as 27 kt. A chance of showers after 2pm. Seas 1 ft or less.
Friday Night
NNE wind 27 to 30 kt, with gusts as high as 38 kt. Rain, mainly after 11pm. Seas 1 ft or less.
Saturday
NNE wind 24 to 27 kt, with gusts as high as 39 kt. Rain. Seas 1 ft or less.
Saturday Night
N wind 27 to 30 kt, with gusts as high as 38 kt. Rain before 11pm, then rain and possibly a thunderstorm between 11pm and 2am, then rain after 2am. Seas 1 ft or less.
Sunday
N wind 20 to 25 kt, with gusts as high as 38 kt. Rain. Seas 1 ft or less.
Sunday Night
NNE wind 19 to 22 kt, with gusts as high as 30 kt. Rain. Seas 1 ft or less.
Monday
N wind 13 to 16 kt. Showers likely, mainly before 8am. Seas 1 ft or less.
Monday Night
N wind 6 to 9 kt. Mostly cloudy. Seas 1 ft or less.
Tuesday
NW wind 5 to 7 kt becoming W in the afternoon. Partly 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: 40.62°N 73.59°W
Last Update: 2:36 am EDT Sep 25, 2026
Forecast Valid: 4am EDT Sep 25, 2026-6pm EDT Oct 1, 2026
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