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15NM SW Islip NY

[NOTICE]

Last Update: 6:41 pm EST Dec 15, 2025
Forecast Valid: 8pm EST Dec 15, 2025-6pm EST Dec 22, 2025

Tonight

W wind 16 to 18 kt. Mostly cloudy. Seas around 3 ft.

Tuesday

W wind 8 to 13 kt. Sunny. Seas 2 to 3 ft.

Tuesday Night

SW wind 12 to 15 kt increasing to 16 to 19 kt after midnight. Partly cloudy. Seas 2 ft building to 4 ft.

Wednesday

SW wind around 21 kt. Mostly sunny. Seas 5 to 6 ft.

Wednesday Night

W wind 12 to 17 kt becoming NW 6 to 9 kt after midnight. Partly cloudy. Seas 5 ft subsiding to 3 ft.

Thursday

S wind 6 to 11 kt increasing to 12 to 17 kt in the afternoon. Mostly sunny. Seas 2 to 3 ft.

Thursday Night

S wind 20 to 25 kt increasing to 31 to 36 kt. Winds could gust as high as 43 kt. Rain, mainly after 1am. Seas 4 ft building to 10 ft.

Friday

S wind 32 to 37 kt becoming W in the afternoon. Winds could gust as high as 43 kt. Rain likely. Seas 12 ft subsiding to 10 ft.

Friday Night

WNW wind 31 to 36 kt decreasing to 19 to 24 kt. Partly cloudy. Seas 10 ft subsiding to 7 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.