For More Weather Information:

15NM SW Islip NY

[NOTICE]

Last Update: 1:06 am EST Dec 29, 2025
Forecast Valid: 3am EST Dec 29, 2025-6pm EST Jan 4, 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EST EARLY THIS

Monday

SSW wind 22 to 25 kt becoming W 27 to 30 kt in the afternoon. Winds could gust as high as 39 kt. Rain, mainly between 10am and 4pm. Seas 6 to 7 ft.

Monday Night

W wind 33 to 37 kt. Partly cloudy. Seas around 8 ft.

Tuesday

W wind 29 to 31 kt, with gusts as high as 38 kt. Partly sunny. Seas 8 ft subsiding to 6 ft.

Tuesday Night

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

Wednesday

WSW wind around 23 kt. Partly sunny. Seas around 5 ft.

Wednesday Night

WSW wind 24 to 26 kt becoming WNW after midnight. A chance of snow. Seas 5 to 6 ft.

New Year's Day

WNW wind 17 to 21 kt. Partly sunny. Seas 3 to 4 ft.

Thursday Night

W wind around 17 kt. Mostly cloudy. Seas around 3 ft.

Friday

W wind around 18 kt. Mostly sunny. Seas around 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.