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New York, NY Local Forecast Office

9NM E Islip NY

Marine Point Forecast

[NOTICE]

    • Overnight

      Overnight:W wind 13 to 15 kt, with gusts as high as 23 kt. Mostly cloudy. Seas around 1 ft.

      W 15kt
      1ft

    • Juneteenth

      Juneteenth:W wind 12 to 15 kt becoming WSW 16 to 19 kt in the afternoon. Winds could gust as high as 29 kt. Mostly cloudy, then gradually becoming sunny. Seas around 1 ft.

      ⇑WSW 19kt
      1ft

    • Friday Night

      Friday Night:WSW wind 10 to 13 kt becoming WNW in the evening. Winds could gust as high as 21 kt. Mostly clear. Seas around 1 ft.

      WNW 13kt
      1ft

    • Saturday

      Saturday:WNW wind 17 to 19 kt, with gusts as high as 28 kt. Sunny. Seas around 1 ft.

      WNW 19kt
      1ft

    • Saturday Night

      Saturday Night:WNW wind 7 to 9 kt. Mostly clear. Seas 1 ft or less.

      WNW 9kt
      < 1ft

    • Sunday

      Sunday:WNW wind 7 to 10 kt becoming SW in the afternoon. Sunny. Seas 1 ft or less.

      SW 10kt
      < 1ft

    • Sunday Night

      Sunday Night:SW wind around 6 kt becoming variable and less than 5 kt in the evening. Partly cloudy. Seas 1 ft or less.

      SW 6kt⇓
      < 1ft

    • Monday

      Monday:SSE wind 6 to 11 kt increasing to 15 to 20 kt. Winds could gust as high as 30 kt. Showers likely. Seas 1 ft or less.

      ⇑SSE 20kt
      < 1ft

    • Monday Night

      Monday Night:S wind 19 to 24 kt becoming SW after midnight. Winds could gust as high as 32 kt. Showers. Seas around 2 ft.

      S 24kt
      2ft


Associated Zone Forecast which includes this point

Last Update: 4:34 pm EDT Jun 18, 2026
Forecast Valid: 11pm EDT Jun 18, 2026-6pm EDT Jun 25, 2026

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Detailed Forecast

...GALE WARNING IN EFFECT UNTIL 11 PM EDT THIS EVENING...

Overnight
W wind 13 to 15 kt, with gusts as high as 23 kt. Mostly cloudy. Seas around 1 ft.
Juneteenth
W wind 12 to 15 kt becoming WSW 16 to 19 kt in the afternoon. Winds could gust as high as 29 kt. Mostly cloudy, then gradually becoming sunny. Seas around 1 ft.
Friday Night
WSW wind 10 to 13 kt becoming WNW in the evening. Winds could gust as high as 21 kt. Mostly clear. Seas around 1 ft.
Saturday
WNW wind 17 to 19 kt, with gusts as high as 28 kt. Sunny. Seas around 1 ft.
Saturday Night
WNW wind 7 to 9 kt. Mostly clear. Seas 1 ft or less.
Sunday
WNW wind 7 to 10 kt becoming SW in the afternoon. Sunny. Seas 1 ft or less.
Sunday Night
SW wind around 6 kt becoming variable and less than 5 kt in the evening. Partly cloudy. Seas 1 ft or less.
Monday
SSE wind 6 to 11 kt increasing to 15 to 20 kt. Winds could gust as high as 30 kt. Showers likely. Seas 1 ft or less.
Monday Night
S wind 19 to 24 kt becoming SW after midnight. Winds could gust as high as 32 kt. Showers. Seas around 2 ft.

*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: 40.71°N 73.02°W
Last Update: 4:34 pm EDT Jun 18, 2026
Forecast Valid: 11pm EDT Jun 18, 2026-6pm EDT Jun 25, 2026
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