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New York, NY Local Forecast Office

11NM ESE Islip NY

Marine Point Forecast

[NOTICE]

Tonight
Light Wind
< 1ft
Saturday
⇑W 11kt
1ft
Saturday Night
W 13kt
1-2ft
Sunday
NNW 8kt
1ft
Sunday Night
⇑WNW 17kt
1-2ft
Monday
N 22kt
1ft
Monday Night
N 18kt⇓
< 1ft
Tuesday
⇑SW 18kt
< 1ft
Tuesday Night
WSW 21kt
1ft

Associated Zone Forecast which includes this point

Last Update: 4:36 pm EST Dec 5, 2025
Forecast Valid: 6pm EST Dec 5, 2025-6pm EST Dec 12, 2025

View Nearby Observations

Detailed Forecast

Tonight

Variable winds 5 kt or less. A slight chance of flurries before 10pm. Seas 1 ft or less.

Saturday

NE wind 5 to 8 kt becoming W 8 to 11 kt in the afternoon. Cloudy. Seas around 1 ft.

Saturday Night

W wind 9 to 13 kt becoming NW after midnight. Mostly cloudy, then gradually becoming mostly clear. Seas 1 to 2 ft.

Sunday

NNW wind 6 to 8 kt becoming WSW in the afternoon. Partly sunny. Seas around 1 ft.

Sunday Night

WSW wind 7 to 10 kt becoming WNW 12 to 17 kt after midnight. A slight chance of rain between 1am and 4am, then a slight chance of snow after 4am. Seas 1 to 2 ft.

Monday

N wind around 22 kt. Mostly sunny. Seas around 1 ft.

Monday Night

N wind 15 to 18 kt decreasing to 9 to 12 kt after midnight. Partly cloudy. Seas 1 ft or less.

Tuesday

N wind 6 to 9 kt becoming SW 13 to 18 kt. Mostly sunny. Seas 1 ft or less.

Tuesday Night

WSW wind 17 to 21 kt. Mostly cloudy. Seas around 1 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.