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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

Tonight
W 7kt
1ft
Monday
⇑SW 10kt
1ft
Monday Night
SW 7kt
1ft
Tuesday
W 9kt
1ft
Tuesday Night
W 6kt
1ft
Wednesday
Light Wind
< 1ft
Wednesday Night
S 6kt
1ft
Thursday
⇑S 10kt
< 1ft
Thursday Night
SSE 10kt
1ft

Associated Zone Forecast which includes this point

Last Update: 2:20 pm EDT Aug 23, 2026
Forecast Valid: 9pm EDT Aug 23, 2026-6pm EDT Aug 30, 2026

View Nearby Observations

Detailed Forecast

Tonight

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

Monday

Variable winds less than 5 kt becoming SW 5 to 10 kt in the morning. Sunny. Seas around 1 ft.

Monday Night

SW wind around 7 kt becoming W in the evening. Mostly clear. Seas around 1 ft.

Tuesday

W wind 7 to 9 kt. Sunny. Seas around 1 ft.

Tuesday Night

W wind around 6 kt becoming NW after midnight. Mostly clear. Seas around 1 ft.

Wednesday

Variable winds 5 kt or less. Sunny. Seas 1 ft or less.

Wednesday Night

S wind around 6 kt. Partly cloudy. Seas around 1 ft.

Thursday

Variable winds less than 5 kt becoming S 5 to 10 kt in the morning. A chance of showers. Seas 1 ft or less.

Thursday Night

SSE wind 5 to 10 kt. A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then showers likely after 2am. Seas around 1 ft.

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.