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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

Today
⇑S 14kt
2ft
Tonight
S 16kt
1-2ft
Monday
NNW 13kt
1-2ft
Monday Night
NNW 11kt⇓
1ft
Tuesday
⇑SW 6kt
< 1ft
Tuesday Night
S 9kt⇓
< 1ft
Wednesday
⇑SSE 10kt
< 1ft
Wednesday Night
S 7kt⇓
< 1ft
Thursday
⇑SSW 17kt
1-2ft

Associated Zone Forecast which includes this point

Last Update: 2:46 am EDT Jun 14, 2026
Forecast Valid: 6am EDT Jun 14, 2026-6pm EDT Jun 20, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM EDT THIS AFTERNOON

Today

Variable winds less than 5 kt becoming S 9 to 14 kt in the morning. Winds could gust as high as 21 kt. Partly sunny. Seas 1 ft or less building to 2 ft.

Tonight

S wind 11 to 16 kt becoming SW after midnight. Winds could gust as high as 22 kt. A chance of showers and thunderstorms before 11pm, then showers and possibly a thunderstorm between 11pm and 2am, then showers likely after 2am. Seas 1 to 2 ft.

Monday

NNW wind 9 to 13 kt becoming WNW in the afternoon. Sunny. Seas 1 to 2 ft.

Monday Night

NNW wind 8 to 11 kt decreasing to 5 to 8 kt after midnight. Mostly clear. Seas around 1 ft.

Tuesday

Variable winds less than 5 kt becoming SW around 6 kt in the afternoon. Sunny. Seas 1 ft or less.

Tuesday Night

S wind 5 to 9 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Seas 1 ft or less.

Wednesday

Variable winds less than 5 kt becoming SSE 5 to 10 kt in the morning. A chance of showers after 2pm. Seas 1 ft or less.

Wednesday Night

S wind 5 to 7 kt becoming variable and less than 5 kt after midnight. A chance of showers. Seas 1 ft or less.

Thursday

SSE wind 8 to 11 kt becoming SSW 14 to 17 kt in the afternoon. Winds could gust as high as 25 kt. A chance of showers. Seas 1 to 2 ft.

*Notices:

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.
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.