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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]

    • Today

      Today:WNW wind 14 to 18 kt, with gusts as high as 25 kt. Sunny. Seas 1 ft or less.

      WNW 18kt
      < 1ft

    • Tonight

      Tonight:W wind 7 to 12 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas 1 ft or less.

      W 12kt⇓
      < 1ft

    • Sunday

      Sunday:WNW wind 5 to 8 kt becoming SSW 8 to 11 kt in the afternoon. Sunny. Seas 1 ft or less.

      ⇑SSW 11kt
      < 1ft

    • Sunday Night

      Sunday Night:SW wind 5 to 7 kt becoming variable and less than 5 kt in the evening. A slight chance of showers after 2am. Seas 1 ft or less.

      SW 7kt⇓
      < 1ft

    • Monday

      Monday:ESE wind 7 to 10 kt becoming SSE 14 to 19 kt. Winds could gust as high as 26 kt. Showers likely, then showers and possibly a thunderstorm after 2pm. Seas 1 ft or less.

      ⇑SSE 19kt
      < 1ft

    • Monday Night

      Monday Night:S wind 16 to 19 kt becoming WSW 10 to 13 kt after midnight. Showers and possibly a thunderstorm before 2am, then a chance of showers. Seas 1 ft or less.

      S 19kt⇓
      < 1ft

    • Tuesday

      Tuesday:NW wind around 9 kt. A chance of showers before 8am. Seas 1 ft or less.

      NW 9kt
      < 1ft

    • Tuesday Night

      Tuesday Night:Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Wednesday

      Wednesday:Variable winds less than 5 kt becoming SSW 5 to 8 kt in the afternoon. Sunny. Seas 1 ft or less.

      ⇑SSW 8kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:19 am EDT Jun 20, 2026
Forecast Valid: 7am EDT Jun 20, 2026-6pm EDT Jun 26, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

Today
WNW wind 14 to 18 kt, with gusts as high as 25 kt. Sunny. Seas 1 ft or less.
Tonight
W wind 7 to 12 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas 1 ft or less.
Sunday
WNW wind 5 to 8 kt becoming SSW 8 to 11 kt in the afternoon. Sunny. Seas 1 ft or less.
Sunday Night
SW wind 5 to 7 kt becoming variable and less than 5 kt in the evening. A slight chance of showers after 2am. Seas 1 ft or less.
Monday
ESE wind 7 to 10 kt becoming SSE 14 to 19 kt. Winds could gust as high as 26 kt. Showers likely, then showers and possibly a thunderstorm after 2pm. Seas 1 ft or less.
Monday Night
S wind 16 to 19 kt becoming WSW 10 to 13 kt after midnight. Showers and possibly a thunderstorm before 2am, then a chance of showers. Seas 1 ft or less.
Tuesday
NW wind around 9 kt. A chance of showers before 8am. Seas 1 ft or less.
Tuesday Night
Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.
Wednesday
Variable winds less than 5 kt becoming SSW 5 to 8 kt in the afternoon. Sunny. Seas 1 ft or less.

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: 40.62°N 73.59°W
Last Update: 2:19 am EDT Jun 20, 2026
Forecast Valid: 7am EDT Jun 20, 2026-6pm EDT Jun 26, 2026
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