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New York, NY Local Forecast Office

13NM E Islip NY

Marine Point Forecast

[NOTICE]

Tonight
Light Wind
< 1ft
Saturday
⇑W 9kt
< 1ft
Saturday Night
W 10kt
1ft
Sunday
N 7kt
1ft
Sunday Night
⇑WNW 14kt
1-2ft
Monday
N 19kt
1ft
Monday Night
N 17kt⇓
1ft
Tuesday
⇑SW 16kt
< 1ft
Tuesday Night
WSW 18kt
2ft

Associated Zone Forecast which includes this point

Last Update: 1:11 pm EST Dec 5, 2025
Forecast Valid: 4pm EST Dec 5, 2025-6pm EST Dec 12, 2025

View Nearby Observations

Detailed Forecast

Tonight

Variable winds 5 kt or less. Cloudy. Seas 1 ft or less.

Saturday

Variable winds less than 5 kt becoming W 5 to 9 kt in the morning. Cloudy. Seas 1 ft or less.

Saturday Night

W wind 8 to 10 kt becoming NW after midnight. Mostly cloudy, then gradually becoming mostly clear. Seas around 1 ft.

Sunday

NNW wind around 7 kt becoming WSW in the afternoon. Partly sunny. Seas around 1 ft.

Sunday Night

WSW wind 6 to 9 kt becoming WNW 11 to 14 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 19 kt. Mostly sunny. Seas around 1 ft.

Monday Night

N wind 12 to 17 kt decreasing to 7 to 12 kt after midnight. Partly cloudy. Seas around 1 ft.

Tuesday

N wind 5 to 8 kt becoming SW 11 to 16 kt in the morning. Mostly sunny. Seas 1 ft or less.

Tuesday Night

WSW wind 14 to 18 kt. Mostly cloudy. Seas around 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.