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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

Independence Day
WNW 7kt
1ft
Tonight
Light Wind
< 1ft
Sunday
ENE 6kt
1ft
Sunday Night
E 9kt
1ft
Monday
E 13kt
1ft
Monday Night
E 13kt
1ft
Tuesday
ENE 14kt
1ft
Tuesday Night
ENE 9kt
1ft
Wednesday
NE 6kt
1ft

Associated Zone Forecast which includes this point

Last Update: 3:48 am EDT Jul 4, 2026
Forecast Valid: 12pm EDT Jul 4, 2026-6pm EDT Jul 10, 2026

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Detailed Forecast

Independence Day

WNW wind 5 to 7 kt. Showers likely and possibly a thunderstorm after 2pm. Seas around 1 ft.

Tonight

Variable winds 5 kt or less. Showers and thunderstorms likely before 11pm, then a chance of showers. Seas 1 ft or less.

Sunday

ENE wind around 6 kt becoming N in the morning. Showers likely before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Seas around 1 ft.

Sunday Night

E wind 7 to 9 kt. A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then showers after 2am. Seas around 1 ft.

Monday

E wind around 13 kt, with gusts as high as 20 kt. Showers, with thunderstorms also possible after 8am. Some of the storms could produce heavy rainfall. Seas around 1 ft.

Monday Night

E wind around 13 kt. Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Seas around 1 ft.

Tuesday

ENE wind 12 to 14 kt, with gusts as high as 20 kt. Showers likely, with thunderstorms also possible after 2pm. Seas around 1 ft.

Tuesday Night

ENE wind 6 to 9 kt. A chance of showers and thunderstorms. Seas around 1 ft.

Wednesday

NE wind around 6 kt becoming ESE in the afternoon. Partly sunny. Seas around 1 ft.

Winds and seas may be higher in and near tstms.

*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.