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New York, NY Local Forecast Office

19NM WSW Islip NY

Marine Point Forecast

[NOTICE]

Friday
E 18kt
3ft

Small Craft Advisory
Friday Night
WNW 10kt
3ft
Saturday
WNW 11kt
3ft
Saturday Night
E 12kt
2ft
Sunday
E 20kt
2-3ft
Sunday Night
NNE 24kt
4-5ft
Monday
N 22kt
6-7ft
Monday Night
NW 13kt
7ft
Tuesday
NW 12kt
3-4ft

Associated Zone Forecast which includes this point

Last Update: 1:01 am EST Feb 20, 2026
Forecast Valid: 4am EST Feb 20, 2026-6pm EST Feb 26, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

Friday

E wind 15 to 18 kt, with gusts as high as 24 kt. Rain, mainly between 7am and 4pm. Seas around 3 ft.

Friday Night

ENE wind around 10 kt becoming W after midnight. A chance of rain, mainly before 7pm. Seas around 3 ft.

Saturday

WNW wind 8 to 11 kt. Partly sunny. Seas around 3 ft.

Saturday Night

N wind 7 to 12 kt becoming E after midnight. A slight chance of rain before 10pm, then a slight chance of rain and snow between 10pm and 1am, then a slight chance of snow after 1am. Seas around 2 ft.

Sunday

E wind 16 to 20 kt. Snow likely, mainly after 1pm. Seas 2 to 3 ft.

Sunday Night

ENE wind 21 to 24 kt becoming NNE after midnight. Winds could gust as high as 30 kt. Snow likely. Seas 4 to 5 ft.

Monday

N wind 17 to 22 kt, with gusts as high as 31 kt. A chance of snow before 1pm. Seas 6 to 7 ft.

Monday Night

NW wind around 13 kt. Mostly cloudy. Seas 7 ft subsiding to 5 ft.

Tuesday

NW wind around 12 kt. Mostly sunny. Seas 3 to 4 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.