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New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]

Today
E 16kt
< 1ft
Tonight
E 21kt⇓
< 1ft
Columbus Day
N 14kt
< 1ft
Monday Night
Light Wind
< 1ft
Tuesday
⇑S 11kt
< 1ft
Tuesday Night
SW 14kt
< 1ft
Wednesday
WSW 11kt
< 1ft
Wednesday Night
NNW 10kt
< 1ft
Thursday
N 10kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 5:35 am EDT Oct 11, 2026
Forecast Valid: 8am EDT Oct 11, 2026-6pm EDT Oct 17, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING

Today

E wind 14 to 16 kt, with gusts as high as 22 kt. Rain, mainly after 11am. Seas 1 ft or less.

Tonight

E wind 18 to 21 kt becoming NNE 13 to 16 kt after midnight. Rain and possibly a thunderstorm, mainly before 2am, then a chance of rain and thunderstorms after 2am. Seas 1 ft or less.

Columbus Day

NNE wind 10 to 14 kt becoming NNW in the afternoon. A chance of rain and thunderstorms before 8am, then a chance of showers between 8am and 11am. Seas 1 ft or less.

Monday Night

Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.

Tuesday

Variable winds less than 5 kt becoming S 6 to 11 kt in the morning. Mostly sunny. Seas 1 ft or less.

Tuesday Night

SW wind around 14 kt. Partly cloudy. Seas 1 ft or less.

Wednesday

WSW wind around 11 kt becoming WNW in the afternoon. Sunny. Seas 1 ft or less.

Wednesday Night

NNW wind 8 to 10 kt. Mostly clear. Seas 1 ft or less.

Thursday

N wind around 10 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.