For More Weather Information:

15NM SW Islip NY

[NOTICE]

Last Update: 5:57 pm EST Nov 28, 2025
Forecast Valid: 8pm EST Nov 28, 2025-6pm EST Dec 5, 2025

...GALE WARNING IN EFFECT UNTIL 1 AM EST SATURDAY...

Tonight

W wind 23 to 27 kt, with gusts as high as 34 kt. Mostly clear. Seas 6 ft subsiding to 4 ft.

Saturday

WNW wind 15 to 20 kt decreasing to 9 to 14 kt in the afternoon. Sunny. Seas 4 ft subsiding to 2 ft.

Saturday Night

Variable winds less than 5 kt becoming S 7 to 12 kt after midnight. Increasing clouds. Seas 1 to 2 ft.

Sunday

S wind 17 to 20 kt increasing to 21 to 24 kt in the morning. Rain, mainly after 1pm. Seas 2 ft building to 6 ft.

Sunday Night

SW wind 23 to 25 kt becoming WNW after midnight. A chance of rain before 1am. Seas 6 ft subsiding to 4 ft.

Monday

WNW wind 18 to 21 kt decreasing to 13 to 16 kt in the afternoon. Mostly sunny. Seas 4 ft subsiding to 2 ft.

Monday Night

N wind around 9 kt becoming SE after midnight. Increasing clouds. Seas 1 to 2 ft.

Tuesday

ESE wind 9 to 12 kt becoming E 15 to 20 kt in the afternoon. Rain. Seas 2 to 3 ft.

Tuesday Night

NNW wind 21 to 23 kt. Rain likely. Seas 4 ft building 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.