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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

This Afternoon
E 7kt
< 1ft
Tonight
S 7kt
< 1ft
Thursday
SSW 9kt
< 1ft
Thursday Night
Light Wind
< 1ft
Friday
Light Wind
< 1ft
Friday Night
NNW 8kt
< 1ft
Saturday
N 9kt
< 1ft
Saturday Night
NE 8kt
< 1ft
Sunday
NNE 8kt⇓
< 1ft

Associated Zone Forecast which includes this point

Last Update: 2:20 pm EDT Sep 2, 2026
Forecast Valid: 2pm EDT Sep 2, 2026-6pm EDT Sep 8, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

E wind around 7 kt. A slight chance of showers. Seas 1 ft or less.

Tonight

ESE wind around 7 kt becoming S after midnight. A chance of showers, then showers and possibly a thunderstorm after 2am. Seas 1 ft or less.

Thursday

SSW wind 7 to 9 kt becoming WSW in the afternoon. Showers and thunderstorms before 2pm, then a chance of showers and thunderstorms after 5pm. Seas 1 ft or less.

Thursday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms before 8pm. Seas 1 ft or less.

Friday

Variable winds 5 kt or less. A slight chance of showers after 2pm. Seas 1 ft or less.

Friday Night

NNW wind 5 to 8 kt. Mostly clear. Seas 1 ft or less.

Saturday

N wind around 9 kt. Sunny. Seas 1 ft or less.

Saturday Night

NE wind around 8 kt. Partly cloudy. Seas 1 ft or less.

Sunday

NNE wind 5 to 8 kt becoming variable and less than 5 kt in the afternoon. Sunny. 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.