For More Weather Information:

New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]

Friday
E 15kt
< 1ft
Friday Night
ENE 8kt
< 1ft
Saturday
WNW 9kt
< 1ft
Saturday Night
E 10kt
< 1ft
Sunday
E 18kt
< 1ft
Sunday Night
NNE 21kt
< 1ft
Monday
N 21kt
< 1ft
Monday Night
NW 13kt
< 1ft
Tuesday
NW 12kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 1:01 am EST Feb 20, 2026
Forecast Valid: 1am 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 12 to 15 kt. Rain, mainly between 7am and 4pm. Seas 1 ft or less.

Friday Night

ENE wind around 8 kt becoming W after midnight. A chance of rain, mainly before 7pm. Seas 1 ft or less.

Saturday

WNW wind around 9 kt. Partly sunny. Seas 1 ft or less.

Saturday Night

N wind 6 to 10 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 1 ft or less.

Sunday

E wind 15 to 18 kt. Snow likely, mainly after 1pm. Seas 1 ft or less.

Sunday Night

ENE wind 19 to 21 kt becoming NNE after midnight. Winds could gust as high as 28 kt. Snow likely. Seas 1 ft or less.

Monday

N wind 16 to 21 kt, with gusts as high as 28 kt. A chance of snow before 1pm. Seas 1 ft or less.

Monday Night

NW wind 11 to 13 kt. Mostly cloudy. Seas 1 ft or less.

Tuesday

NW wind 10 to 12 kt. Mostly sunny. Seas 1 ft or less.

*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.