For More Weather Information:

New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]

Tonight
SSW 17kt⇓
3ft
Wednesday
SE 11kt
2ft
Wednesday Night
SSE 10kt
3ft
Thursday
S 23kt
5-6ft
Thursday Night
SW 20kt⇓
5-6ft
Juneteenth
SW 14kt
4ft
Friday Night
WNW 14kt
3-4ft
Saturday
W 16kt
3ft
Saturday Night
WNW 14kt
2-3ft

Associated Zone Forecast which includes this point

Last Update: 3:07 pm EDT Jun 16, 2026
Forecast Valid: 8pm EDT Jun 16, 2026-6pm EDT Jun 23, 2026

View Nearby Observations

Detailed Forecast

Tonight

SSW wind 14 to 17 kt decreasing to 8 to 11 kt after midnight. Increasing clouds. Seas around 3 ft.

Wednesday

SE wind 7 to 11 kt. Mostly sunny. Seas around 2 ft.

Wednesday Night

SSE wind around 10 kt. Increasing clouds. Seas around 3 ft.

Thursday

S wind 18 to 23 kt, with gusts as high as 32 kt. A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Seas 5 to 6 ft.

Thursday Night

SW wind 17 to 20 kt becoming W 14 to 17 kt after midnight. Winds could gust as high as 27 kt. A chance of showers and thunderstorms before 8pm. Seas 5 to 6 ft.

Juneteenth

SW wind 12 to 14 kt. Partly sunny. Seas around 4 ft.

Friday Night

WNW wind 12 to 14 kt. Mostly clear. Seas 3 to 4 ft.

Saturday

W wind around 16 kt. Sunny. Seas around 3 ft.

Saturday Night

WNW wind 12 to 14 kt. Mostly clear. Seas 2 to 3 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.