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New York, NY Local Forecast Office

19NM WSW Islip NY

Marine Point Forecast

[NOTICE]

Tonight
E 24kt⇓
< 1ft
Columbus Day
NNE 10kt
< 1ft
Monday Night
Light Wind
< 1ft
Tuesday
⇑S 9kt
< 1ft
Tuesday Night
SW 11kt
< 1ft
Wednesday
W 9kt
< 1ft
Wednesday Night
WNW 9kt
< 1ft
Thursday
N 11kt
< 1ft
Thursday Night
E 10kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 3:33 pm EDT Oct 11, 2026
Forecast Valid: 7pm EDT Oct 11, 2026-6pm EDT Oct 18, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE MONDAY NIGHT...

Tonight

E wind 19 to 24 kt becoming NE 11 to 16 kt after midnight. Winds could gust as high as 31 kt. Rain and possibly a thunderstorm before 11pm, then a chance of rain and thunderstorms between 11pm and 2am, then rain likely and possibly a thunderstorm after 2am. Seas 1 ft or less.

Columbus Day

NNE wind 7 to 10 kt becoming NNW in the afternoon. A chance of rain before 8am. 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 5 to 9 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

Tuesday Night

SW wind 9 to 11 kt. Partly cloudy. Seas 1 ft or less.

Wednesday

W wind around 9 kt. Mostly sunny. Seas 1 ft or less.

Wednesday Night

WNW wind around 9 kt becoming NNW after midnight. Mostly cloudy. Seas 1 ft or less.

Thursday

N wind 9 to 11 kt. Mostly sunny. Seas 1 ft or less.

Thursday Night

NNE wind 8 to 10 kt becoming E after midnight. A chance of showers. Seas 1 ft or less.

Winds and seas may be higher in and near tstms.

*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.