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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]

Tonight
NE 9kt
3ft
Saturday
S 10kt
3ft
Saturday Night
⇑SSW 19kt
5ft

Small Craft Advisory
Sunday
WSW 16kt
4-5ft
Sunday Night
WSW 10kt
4ft
Monday
⇑S 13kt
3ft
Monday Night
SW 13kt⇓
3-4ft
Tuesday
SSW 8kt
3ft
Tuesday Night
S 12kt
2-3ft

Associated Zone Forecast which includes this point

Last Update: 12:51 pm EST Mar 6, 2026
Forecast Valid: 10pm EST Mar 6, 2026-6pm EDT Mar 13, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY EVENING THROUGH

Tonight

NE wind 5 to 9 kt becoming E after midnight. Cloudy. Seas around 3 ft.

Saturday

ESE wind 5 to 10 kt becoming SSW in the afternoon. Cloudy. Seas around 3 ft.

Saturday Night

SSW wind 13 to 16 kt increasing to 16 to 19 kt in the evening. A chance of showers and thunderstorms. Areas of dense fog after 1am. Seas 3 ft building to 5 ft.

Sunday

WSW wind 12 to 16 kt. A chance of showers, mainly before 1pm. Areas of fog before 1pm. Seas 4 to 5 ft.

Sunday Night

WSW wind 8 to 10 kt. Partly cloudy. Seas around 4 ft.

Monday

SW wind 6 to 9 kt becoming S 10 to 13 kt in the afternoon. Sunny. Seas around 3 ft.

Monday Night

SW wind 10 to 13 kt decreasing to 7 to 10 kt after midnight. Mostly cloudy. Seas 3 to 4 ft.

Tuesday

SW wind 6 to 8 kt becoming S in the afternoon. Mostly cloudy. Seas around 3 ft.

Tuesday Night

S wind 9 to 12 kt. A chance of rain. Seas 2 to 3 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.