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New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]
    • Monday

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

      ⇑SSE 9kt
      < 1ft

    • Monday Night

      Monday Night:S wind 5 to 8 kt. Mostly clear. Seas 1 ft or less.

      S 8kt
      < 1ft

    • Tuesday

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

      ⇑SW 9kt
      < 1ft

    • Tuesday Night

      Tuesday Night:WSW wind 5 to 8 kt becoming NW after midnight. Mostly clear. Seas 1 ft or less.

      WSW 8kt
      < 1ft

    • Wednesday

      Wednesday:Variable winds less than 5 kt becoming S 5 to 9 kt in the afternoon. A slight chance of showers and thunderstorms after 2pm.   Seas 1 ft or less.

      ⇑S 9kt
      < 1ft

    • Wednesday Night

      Wednesday Night:ESE wind around 6 kt. Mostly cloudy. Seas 1 ft or less.

      ESE 6kt
      < 1ft

    • Thursday

      Thursday:E wind 7 to 10 kt becoming SSE in the afternoon. A chance of showers and thunderstorms after 2pm.   Seas 1 ft or less.

      SE 10kt
      < 1ft

    • Thursday Night

      Thursday Night:SE wind around 9 kt becoming E after midnight. A chance of showers and thunderstorms.   Seas 1 ft or less.

      SE 9kt
      < 1ft

    • Friday

      Friday:E wind 9 to 12 kt. A chance of showers.   Seas 1 ft or less.

      E 12kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 5:23 pm EDT Jun 22, 2025
Forecast Valid: 2am EDT Jun 23, 2025-6pm EDT Jun 29, 2025

View Nearby Observations

Detailed Forecast


Monday
Variable winds less than 5 kt becoming SSE 5 to 9 kt in the afternoon. Sunny. Seas 1 ft or less.
Monday Night
S wind 5 to 8 kt. Mostly clear. Seas 1 ft or less.
Tuesday
Variable winds less than 5 kt becoming SW 5 to 9 kt in the afternoon. Sunny. Seas 1 ft or less.
Tuesday Night
WSW wind 5 to 8 kt becoming NW after midnight. Mostly clear. Seas 1 ft or less.
Wednesday
Variable winds less than 5 kt becoming S 5 to 9 kt in the afternoon. A slight chance of showers and thunderstorms after 2pm. Seas 1 ft or less.
Wednesday Night
ESE wind around 6 kt. Mostly cloudy. Seas 1 ft or less.
Thursday
E wind 7 to 10 kt becoming SSE in the afternoon. A chance of showers and thunderstorms after 2pm. Seas 1 ft or less.
Thursday Night
SE wind around 9 kt becoming E after midnight. A chance of showers and thunderstorms. Seas 1 ft or less.
Friday
E wind 9 to 12 kt. A chance of showers. 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: 5:23 pm EDT Jun 22, 2025
Forecast Valid: 2am EDT Jun 23, 2025-6pm EDT Jun 29, 2025
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