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15NM SW Islip NY

[NOTICE]

Last Update: 5:42 pm EST Dec 9, 2025
Forecast Valid: 10pm EST Dec 9, 2025-6pm EST Dec 16, 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

Tonight

SW wind around 23 kt, with gusts as high as 29 kt. Mostly cloudy. Seas 4 to 5 ft.

Wednesday

SW wind 23 to 26 kt increasing to 27 to 30 kt in the afternoon. Winds could gust as high as 39 kt. Rain likely after 1pm. Seas 6 ft building to 9 ft.

Wednesday Night

SW wind 26 to 28 kt becoming W after midnight. Winds could gust as high as 34 kt. A chance of rain before 1am. Seas 7 to 8 ft.

Thursday

W wind 26 to 28 kt, with gusts as high as 35 kt. Mostly sunny. Seas around 6 ft.

Thursday Night

W wind 28 to 31 kt decreasing to 25 to 28 kt after midnight. Partly cloudy. Seas 5 to 6 ft.

Friday

W wind 18 to 23 kt, with gusts as high as 30 kt. Mostly sunny. Seas 4 to 5 ft.

Friday Night

W wind 14 to 17 kt, with gusts as high as 24 kt. Mostly cloudy. Seas 2 to 3 ft.

Saturday

W wind 16 to 19 kt increasing to 19 to 22 kt in the afternoon. Winds could gust as high as 29 kt. Mostly cloudy. Seas 2 ft building to 4 ft.

Saturday Night

W wind 20 to 22 kt, with gusts as high as 29 kt. A chance of snow after 1am, mixing with rain after 3am. Seas around 4 ft.

*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.