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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

Late Afternoon
SSW 6kt
< 1ft
Tonight
SSW 6kt⇓
< 1ft
Saturday
WSW 8kt
< 1ft
Saturday Night
SSW 7kt
< 1ft
Sunday
W 7kt
< 1ft
Sunday Night
Light Wind
< 1ft
Monday
⇑SSW 6kt
< 1ft
Monday Night
SSW 7kt
< 1ft
Tuesday
W 8kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 3:38 pm EDT Aug 7, 2026
Forecast Valid: 5pm EDT Aug 7, 2026-6pm EDT Aug 14, 2026

View Nearby Observations

Detailed Forecast

...SEVERE THUNDERSTORM WATCH 540 IN EFFECT UNTIL 9 PM EDT THIS

Late Afternoon

SSW wind around 6 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

Tonight

SSW wind around 6 kt becoming variable and less than 5 kt. Showers and thunderstorms likely before 2am, then a slight chance of showers. Seas 1 ft or less.

Saturday

WSW wind around 8 kt. A chance of showers and thunderstorms, mainly after 5pm. Seas 1 ft or less.

Saturday Night

SSW wind around 7 kt becoming WSW after midnight. A chance of showers and thunderstorms before 11pm. Seas 1 ft or less.

Sunday

W wind around 7 kt. Sunny. Seas 1 ft or less.

Sunday Night

Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.

Monday

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

Monday Night

SSW wind 5 to 7 kt becoming W after midnight. Partly cloudy. Seas 1 ft or less.

Tuesday

W wind 6 to 8 kt. A chance of showers. 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.