National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

For More Weather Information:

New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]

    • Today

      Today:NE wind 8 to 11 kt becoming E 14 to 17 kt in the morning. Winds could gust as high as 25 kt. Mostly cloudy. Seas 1 ft or less.

      ⇑E 17kt
      < 1ft

    • Tonight

      Tonight:E wind 10 to 13 kt, with gusts as high as 21 kt. A slight chance of rain after 5am. Seas 1 ft or less.

      E 13kt
      < 1ft

    • Saturday

      Saturday:E wind 13 to 16 kt increasing to 16 to 19 kt in the afternoon. Winds could gust as high as 27 kt. A slight chance of rain before 8am, then showers likely between 8am and 2pm, then rain after 2pm. Seas 1 ft or less.

      ⇑E 19kt
      < 1ft

    • Saturday Night

      Saturday Night:E wind 21 to 23 kt, with gusts as high as 31 kt. Rain, with thunderstorms also possible after 2am. Seas 1 ft or less.

      E 23kt
      < 1ft

    • Sunday

      Sunday:E wind 20 to 23 kt decreasing to 15 to 18 kt in the afternoon. Winds could gust as high as 31 kt. Rain and possibly a thunderstorm before 2pm, then rain likely. Seas 1 ft or less.

      E 23kt⇓
      < 1ft

    • Sunday Night

      Sunday Night:E wind 5 to 10 kt becoming N in the evening. Rain likely, mainly before 8pm. Seas 1 ft or less.

      E 10kt
      < 1ft

    • Memorial Day

      Memorial Day:Variable winds less than 5 kt becoming SSW around 6 kt in the afternoon. Showers likely, mainly before 2pm. Seas 1 ft or less.

      ⇑SSW 6kt
      < 1ft

    • Monday Night

      Monday Night:Variable winds 5 kt or less. A chance of showers. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Tuesday

      Tuesday:Variable winds less than 5 kt becoming SSW around 6 kt in the afternoon. Mostly cloudy. Seas 1 ft or less.

      ⇑SSW 6kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:42 am EDT May 22, 2026
Forecast Valid: 5am EDT May 22, 2026-6pm EDT May 28, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING

Today
NE wind 8 to 11 kt becoming E 14 to 17 kt in the morning. Winds could gust as high as 25 kt. Mostly cloudy. Seas 1 ft or less.
Tonight
E wind 10 to 13 kt, with gusts as high as 21 kt. A slight chance of rain after 5am. Seas 1 ft or less.
Saturday
E wind 13 to 16 kt increasing to 16 to 19 kt in the afternoon. Winds could gust as high as 27 kt. A slight chance of rain before 8am, then showers likely between 8am and 2pm, then rain after 2pm. Seas 1 ft or less.
Saturday Night
E wind 21 to 23 kt, with gusts as high as 31 kt. Rain, with thunderstorms also possible after 2am. Seas 1 ft or less.
Sunday
E wind 20 to 23 kt decreasing to 15 to 18 kt in the afternoon. Winds could gust as high as 31 kt. Rain and possibly a thunderstorm before 2pm, then rain likely. Seas 1 ft or less.
Sunday Night
E wind 5 to 10 kt becoming N in the evening. Rain likely, mainly before 8pm. Seas 1 ft or less.
Memorial Day
Variable winds less than 5 kt becoming SSW around 6 kt in the afternoon. Showers likely, mainly before 2pm. Seas 1 ft or less.
Monday Night
Variable winds 5 kt or less. A chance of showers. Seas 1 ft or less.
Tuesday
Variable winds less than 5 kt becoming SSW around 6 kt in the afternoon. Mostly cloudy. 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.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

Point Forecast: 40.62°N 73.59°W
Last Update: 2:42 am EDT May 22, 2026
Forecast Valid: 5am EDT May 22, 2026-6pm EDT May 28, 2026
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

 Link to Satellite Data