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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

Today
Light Wind
< 1ft
Tonight
Light Wind
< 1ft
Tuesday
Light Wind
< 1ft
Tuesday Night
E 8kt
< 1ft
Wednesday
ESE 8kt
< 1ft
Wednesday Night
SE 6kt
< 1ft
Thursday
SW 6kt
< 1ft
Thursday Night
Light Wind
< 1ft
Friday
NW 6kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 5:39 am EDT Aug 31, 2026
Forecast Valid: 7am EDT Aug 31, 2026-6pm EDT Sep 6, 2026

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Detailed Forecast

Today

Variable winds 5 kt or less. A slight chance of showers between 11am and 2pm. Seas 1 ft or less.

Tonight

Variable winds 5 kt or less. A slight chance of thunderstorms before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then showers and possibly a thunderstorm after 2am. Seas 1 ft or less.

Tuesday

Variable winds 5 kt or less. A chance of showers, with thunderstorms also possible after 11am. Seas 1 ft or less.

Tuesday Night

E wind around 8 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

Wednesday

ESE wind 6 to 8 kt. Showers likely before 11am, then showers likely and possibly a thunderstorm between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Wednesday Night

SE wind around 6 kt becoming S after midnight. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8pm. Seas 1 ft or less.

Thursday

SW wind around 6 kt becoming W in the afternoon. A chance of showers, with thunderstorms also possible after 2pm. Seas 1 ft or less.

Thursday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Seas 1 ft or less.

Friday

NW wind around 6 kt. Mostly 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.