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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

This Afternoon
Light Wind
< 1ft
Tonight
SSE 6kt
< 1ft
Thursday
SSW 8kt
< 1ft
Thursday Night
SW 8kt
< 1ft
Friday
WSW 6kt
< 1ft
Friday Night
SW 6kt
< 1ft
Saturday
WSW 8kt
< 1ft
Saturday Night
SW 7kt
< 1ft
Sunday
W 8kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 2:06 pm EDT Aug 5, 2026
Forecast Valid: 3pm EDT Aug 5, 2026-6pm EDT Aug 12, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

Variable winds 5 kt or less. Partly sunny. Seas 1 ft or less.

Tonight

SSE wind around 6 kt becoming SSW after midnight. A slight chance of showers and thunderstorms before 2am, then a slight chance of showers after 5am. Seas 1 ft or less.

Thursday

SSW wind 5 to 8 kt. A slight chance of showers before 8am, then a slight chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Thursday Night

SW wind 5 to 8 kt. Partly cloudy. Seas 1 ft or less.

Friday

WSW wind around 6 kt. A chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Friday Night

SW wind around 6 kt. A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Seas 1 ft or less.

Saturday

WSW wind 6 to 8 kt. Mostly sunny. Seas 1 ft or less.

Saturday Night

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

Sunday

W wind 6 to 8 kt. 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.