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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

Tonight
SSW 10kt⇓
< 1ft
Monday
ESE 9kt
< 1ft
Monday Night
S 7kt
< 1ft
Tuesday
SSW 11kt
< 1ft
Tuesday Night
SSW 12kt
< 1ft
Wednesday
SW 12kt
< 1ft
Wednesday Night
NNW 9kt
< 1ft
Thursday
N 10kt⇓
< 1ft
Thursday Night
Light Wind
< 1ft

Associated Zone Forecast which includes this point

Last Update: 3:04 pm EDT May 17, 2026
Forecast Valid: 4pm EDT May 17, 2026-6pm EDT May 24, 2026

View Nearby Observations

Detailed Forecast

Tonight

SSW wind 5 to 10 kt becoming variable and less than 5 kt in the evening. Partly cloudy. Seas 1 ft or less.

Monday

E wind 7 to 9 kt becoming ESE in the afternoon. Sunny. Seas 1 ft or less.

Monday Night

S wind around 7 kt. Partly cloudy. Seas 1 ft or less.

Tuesday

SSW wind 6 to 11 kt. Sunny. Seas 1 ft or less.

Tuesday Night

SSW wind 10 to 12 kt. Partly cloudy. Seas 1 ft or less.

Wednesday

SW wind 8 to 12 kt. Showers and possibly a thunderstorm after 2pm. Seas 1 ft or less.

Wednesday Night

WNW wind 7 to 9 kt becoming NNW after midnight. Showers and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Seas 1 ft or less.

Thursday

N wind 5 to 10 kt becoming variable and less than 5 kt in the afternoon. Partly sunny. Seas 1 ft or less.

Thursday Night

Variable winds 5 kt or less. Partly cloudy. 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.