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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

Today
NE 13kt
1ft
Tonight
NE 7kt
< 1ft
Saturday
NE 7kt⇓
< 1ft
Saturday Night
E 6kt
< 1ft
Sunday
SSW 6kt
< 1ft
Sunday Night
SW 7kt
< 1ft
Monday
W 8kt
< 1ft
Monday Night
WNW 7kt
< 1ft
Tuesday
W 7kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 3:45 am EDT Aug 21, 2026
Forecast Valid: 8am EDT Aug 21, 2026-6pm EDT Aug 27, 2026

View Nearby Observations

Detailed Forecast

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

Today

NE wind 9 to 13 kt, with gusts as high as 21 kt. A slight chance of showers before 2pm, then a slight chance of showers after 5pm. Seas around 1 ft.

Tonight

NE wind around 7 kt. A slight chance of showers before 8pm. Seas 1 ft or less.

Saturday

NE wind 5 to 7 kt becoming variable and less than 5 kt in the afternoon. A chance of showers after 2pm. Seas 1 ft or less.

Saturday Night

E wind around 6 kt. A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers and thunderstorms after 2am. Seas 1 ft or less.

Sunday

E wind around 6 kt becoming WSW in the morning. A chance of showers before 8am, then a chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Sunday Night

SW wind around 7 kt becoming W after midnight. A chance of showers and thunderstorms before 8pm. Seas 1 ft or less.

Monday

W wind around 8 kt. Sunny. Seas 1 ft or less.

Monday Night

WNW wind 5 to 7 kt. Mostly clear. Seas 1 ft or less.

Tuesday

W wind 5 to 7 kt. Sunny. Seas 1 ft or less.

*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.