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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:Variable winds less than 5 kt becoming S 5 to 8 kt in the afternoon. Widespread smoke, mainly before 9am. Seas 1 ft or less.

      ⇑S 8kt
      < 1ft

    • Tonight

      Tonight:S wind 6 to 8 kt. Areas of smoke. Seas 1 ft or less.

      S 8kt
      < 1ft

    • Saturday

      Saturday:SSW wind 9 to 12 kt increasing to 12 to 15 kt in the afternoon. Winds could gust as high as 24 kt. Showers and possibly a thunderstorm, mainly after 2pm. Areas of smoke before 3pm. Seas 1 ft or less.

      ⇑SSW 15kt
      < 1ft

    • Saturday Night

      Saturday Night:SSW wind 13 to 15 kt becoming WSW after midnight. Winds could gust as high as 24 kt. Showers and possibly a thunderstorm before 2am. Seas 1 ft or less.

      SSW 15kt
      < 1ft

    • Sunday

      Sunday:NW wind 9 to 12 kt. Partly sunny, then gradually becoming sunny. Seas 1 ft or less.

      NW 12kt
      < 1ft

    • Sunday Night

      Sunday Night:N wind 6 to 8 kt. Mostly clear. Seas 1 ft or less.

      N 8kt
      < 1ft

    • Monday

      Monday:Variable winds less than 5 kt becoming S 5 to 9 kt in the afternoon. Sunny. Seas 1 ft or less.

      ⇑S 9kt
      < 1ft

    • Monday Night

      Monday Night:S wind 9 to 11 kt. Partly cloudy. Seas 1 ft or less.

      S 11kt
      < 1ft

    • Tuesday

      Tuesday:S wind 9 to 12 kt increasing to 12 to 15 kt in the afternoon. A chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

      ⇑S 15kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:26 am EDT Jul 17, 2026
Forecast Valid: 7am EDT Jul 17, 2026-6pm EDT Jul 23, 2026

View Nearby Observations

Detailed Forecast


Today
Variable winds less than 5 kt becoming S 5 to 8 kt in the afternoon. Widespread smoke, mainly before 9am. Seas 1 ft or less.
Tonight
S wind 6 to 8 kt. Areas of smoke. Seas 1 ft or less.
Saturday
SSW wind 9 to 12 kt increasing to 12 to 15 kt in the afternoon. Winds could gust as high as 24 kt. Showers and possibly a thunderstorm, mainly after 2pm. Areas of smoke before 3pm. Seas 1 ft or less.
Saturday Night
SSW wind 13 to 15 kt becoming WSW after midnight. Winds could gust as high as 24 kt. Showers and possibly a thunderstorm before 2am. Seas 1 ft or less.
Sunday
NW wind 9 to 12 kt. Partly sunny, then gradually becoming sunny. Seas 1 ft or less.
Sunday Night
N wind 6 to 8 kt. Mostly clear. Seas 1 ft or less.
Monday
Variable winds less than 5 kt becoming S 5 to 9 kt in the afternoon. Sunny. Seas 1 ft or less.
Monday Night
S wind 9 to 11 kt. Partly cloudy. Seas 1 ft or less.
Tuesday
S wind 9 to 12 kt increasing to 12 to 15 kt in the afternoon. A chance of showers and thunderstorms after 2pm. 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: 2:26 am EDT Jul 17, 2026
Forecast Valid: 7am EDT Jul 17, 2026-6pm EDT Jul 23, 2026
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