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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

Today
SW 9kt
1ft
Tonight
SSW 9kt
1ft
Friday
⇑SW 6kt
< 1ft
Friday Night
SW 6kt
1ft
Saturday
SW 8kt
1ft
Saturday Night
SW 7kt
1ft
Sunday
W 7kt
1ft
Sunday Night
Light Wind
< 1ft
Monday
⇑SW 9kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 9:59 am EDT Aug 6, 2026
Forecast Valid: 10am EDT Aug 6, 2026-6pm EDT Aug 12, 2026

View Nearby Observations

Detailed Forecast

Today

SW wind 6 to 9 kt. Sunny. Seas around 1 ft.

Tonight

SSW wind 5 to 9 kt. Mostly clear. Seas around 1 ft.

Friday

Variable winds less than 5 kt becoming SW around 6 kt in the afternoon. A slight chance of showers and thunderstorms between 2pm and 4pm. Seas 1 ft or less.

Friday Night

SW wind around 6 kt. A chance of showers and thunderstorms before 2am. Seas around 1 ft.

Saturday

SW wind 6 to 8 kt. A slight chance of showers and thunderstorms after 2pm. Seas around 1 ft.

Saturday Night

SW wind around 7 kt. Partly cloudy. Seas around 1 ft.

Sunday

W wind around 7 kt. Sunny. Seas around 1 ft.

Sunday Night

Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.

Monday

Variable winds less than 5 kt becoming SW 5 to 9 kt in the morning. 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.