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15NM SW Islip NY

[NOTICE]

Last Update: 12:02 am EST Dec 29, 2025
Forecast Valid: 12am EST Dec 29, 2025-6pm EST Jan 4, 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EST MONDAY...

Overnight

SSW wind 19 to 21 kt. Rain likely, mainly between 2am and 4am. Seas 4 to 5 ft.

Monday

SSW wind 21 to 24 kt becoming W 26 to 29 kt in the afternoon. Winds could gust as high as 35 kt. Rain, mainly before 4pm. Seas 6 to 7 ft.

Monday Night

W wind 31 to 34 kt, with gusts as high as 41 kt. Partly cloudy. Seas around 8 ft.

Tuesday

W wind 27 to 29 kt, with gusts as high as 36 kt. Partly sunny. Seas 6 to 7 ft.

Tuesday Night

W wind 25 to 30 kt. Mostly cloudy. Seas 5 to 6 ft.

Wednesday

W wind 24 to 26 kt. Partly sunny. Seas around 5 ft.

Wednesday Night

WSW wind 23 to 26 kt becoming WNW 20 to 23 kt after midnight. Mostly cloudy. Seas 6 ft subsiding to 4 ft.

New Year's Day

W wind 15 to 17 kt. Partly sunny. Seas 3 to 4 ft.

Thursday Night

WNW wind around 15 kt. A chance of snow. Seas 2 to 3 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.