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Hazardous Weather Conditions

For More Weather Information:

New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]

    • Late Afternoon

      Late Afternoon:SSE wind around 9 kt. A slight chance of showers and thunderstorms after 5pm. Seas 1 ft or less.

      SSE 9kt
      < 1ft

    • Tonight

      Tonight:SSW wind around 8 kt. A slight chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms after 11pm. Seas 1 ft or less.

      SSW 8kt
      < 1ft

    • Tuesday

      Tuesday:SSW wind 9 to 13 kt. A slight chance of thunderstorms before 8am, then a chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

      SSW 13kt
      < 1ft

    • Tuesday Night

      Tuesday Night:SW wind 7 to 10 kt. Showers and thunderstorms likely before 2am, then a chance of showers. Seas 1 ft or less.

      SW 10kt
      < 1ft

    • Wednesday

      Wednesday:SW wind 6 to 8 kt. A chance of showers before 8am. Seas 1 ft or less.

      SW 8kt
      < 1ft

    • Wednesday Night

      Wednesday Night:SSW wind 5 to 8 kt becoming W after midnight. Partly cloudy. Seas 1 ft or less.

      SSW 8kt
      < 1ft

    • Thursday

      Thursday:Variable winds less than 5 kt becoming SW 5 to 9 kt in the morning. Sunny. Seas 1 ft or less.

      ⇑SW 9kt
      < 1ft

    • Thursday Night

      Thursday Night:NW wind around 8 kt. Mostly clear. Seas 1 ft or less.

      NW 8kt
      < 1ft

    • Independence Day

      Independence Day:NW wind around 7 kt becoming WSW in the afternoon. Sunny. Seas 1 ft or less.

      NW 7kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:29 pm EDT Jun 30, 2025
Forecast Valid: 4pm EDT Jun 30, 2025-6pm EDT Jul 7, 2025

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH

Late Afternoon
SSE wind around 9 kt. A slight chance of showers and thunderstorms after 5pm. Seas 1 ft or less.
Tonight
SSW wind around 8 kt. A slight chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms after 11pm. Seas 1 ft or less.
Tuesday
SSW wind 9 to 13 kt. A slight chance of thunderstorms before 8am, then a chance of showers and thunderstorms after 2pm. Seas 1 ft or less.
Tuesday Night
SW wind 7 to 10 kt. Showers and thunderstorms likely before 2am, then a chance of showers. Seas 1 ft or less.
Wednesday
SW wind 6 to 8 kt. A chance of showers before 8am. Seas 1 ft or less.
Wednesday Night
SSW wind 5 to 8 kt becoming W after midnight. Partly cloudy. Seas 1 ft or less.
Thursday
Variable winds less than 5 kt becoming SW 5 to 9 kt in the morning. Sunny. Seas 1 ft or less.
Thursday Night
NW wind around 8 kt. Mostly clear. Seas 1 ft or less.
Independence Day
NW wind around 7 kt becoming WSW in the afternoon. 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: 2:29 pm EDT Jun 30, 2025
Forecast Valid: 4pm EDT Jun 30, 2025-6pm EDT Jul 7, 2025
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