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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

This Afternoon
Light Wind
< 1ft
Tonight
ESE 6kt
< 1ft
Sunday
S 8kt
< 1ft
Sunday Night
SSW 7kt
< 1ft
Monday
WSW 9kt
< 1ft
Monday Night
W 7kt
< 1ft
Tuesday
W 8kt
< 1ft
Tuesday Night
WNW 6kt
< 1ft
Wednesday
Light Wind
< 1ft

Associated Zone Forecast which includes this point

Last Update: 2:45 pm EDT Aug 22, 2026
Forecast Valid: 2pm EDT Aug 22, 2026-6pm EDT Aug 28, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

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

Tonight

ESE wind around 6 kt. A slight chance of showers and thunderstorms between 11pm and 2am, then showers likely and possibly a thunderstorm after 2am. Patchy fog between 8pm and 11pm. Seas 1 ft or less.

Sunday

E wind 6 to 8 kt becoming S in the afternoon. Showers likely and possibly a thunderstorm before 11am, then a chance of showers and thunderstorms after 11am. Seas 1 ft or less.

Sunday Night

SSW wind around 7 kt becoming W after midnight. A chance of thunderstorms before 8pm. Seas 1 ft or less.

Monday

WSW wind 5 to 9 kt. Sunny. Seas 1 ft or less.

Monday Night

W wind around 7 kt. Mostly clear. Seas 1 ft or less.

Tuesday

W wind around 8 kt. Sunny. Seas 1 ft or less.

Tuesday Night

WNW wind around 6 kt. Mostly clear. Seas 1 ft or less.

Wednesday

Variable winds 5 kt or less. 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.