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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]

    • Tonight

      Tonight:SSW wind 5 to 7 kt. Showers and thunderstorms likely before midnight, then showers likely and possibly a thunderstorm after midnight. Seas 1 ft or less.

      SSW 7kt
      < 1ft

    • Tuesday

      Tuesday:Variable winds less than 5 kt becoming SSE 5 to 7 kt in the afternoon. A chance of showers and thunderstorms, mainly before 11am. Seas 1 ft or less.

      ⇑SSE 7kt
      < 1ft

    • Tuesday Night

      Tuesday Night:SW wind 5 to 7 kt. Partly cloudy. Seas 1 ft or less.

      SW 7kt
      < 1ft

    • Wednesday

      Wednesday:Variable winds less than 5 kt becoming S 5 to 9 kt in the morning. A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Patchy fog before 11am. Seas 1 ft or less.

      ⇑S 9kt
      < 1ft

    • Wednesday Night

      Wednesday Night:SW wind 8 to 11 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

      SW 11kt
      < 1ft

    • Thursday

      Thursday:SSW wind 8 to 11 kt. A chance of showers, with thunderstorms also possible after 2pm. Seas 1 ft or less.

      SSW 11kt
      < 1ft

    • Thursday Night

      Thursday Night:SW wind around 9 kt. A chance of thunderstorms before 8pm. Seas 1 ft or less.

      SW 9kt
      < 1ft

    • Friday

      Friday:W wind 7 to 9 kt. A chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

      W 9kt
      < 1ft

    • Friday Night

      Friday Night:WNW wind around 7 kt becoming N after midnight. A chance of showers and thunderstorms before 8pm. Seas 1 ft or less.

      WNW 7kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:29 pm EDT Jul 14, 2025
Forecast Valid: 9pm EDT Jul 14, 2025-6pm EDT Jul 21, 2025

View Nearby Observations

Detailed Forecast


Tonight
SSW wind 5 to 7 kt. Showers and thunderstorms likely before midnight, then showers likely and possibly a thunderstorm after midnight. Seas 1 ft or less.
Tuesday
Variable winds less than 5 kt becoming SSE 5 to 7 kt in the afternoon. A chance of showers and thunderstorms, mainly before 11am. Seas 1 ft or less.
Tuesday Night
SW wind 5 to 7 kt. Partly cloudy. Seas 1 ft or less.
Wednesday
Variable winds less than 5 kt becoming S 5 to 9 kt in the morning. A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Patchy fog before 11am. Seas 1 ft or less.
Wednesday Night
SW wind 8 to 11 kt. A chance of showers and thunderstorms. Seas 1 ft or less.
Thursday
SSW wind 8 to 11 kt. A chance of showers, with thunderstorms also possible after 2pm. Seas 1 ft or less.
Thursday Night
SW wind around 9 kt. A chance of thunderstorms before 8pm. Seas 1 ft or less.
Friday
W wind 7 to 9 kt. A chance of showers and thunderstorms after 2pm. Seas 1 ft or less.
Friday Night
WNW wind around 7 kt becoming N after midnight. A chance of showers and thunderstorms before 8pm. 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: 2:29 pm EDT Jul 14, 2025
Forecast Valid: 9pm EDT Jul 14, 2025-6pm EDT Jul 21, 2025
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