For More Weather Information:

15NM SW Islip NY

[NOTICE]

Last Update: 12:34 am EST Nov 20, 2025
Forecast Valid: 7am EST Nov 20, 2025-6pm EST Nov 26, 2025

Today

NNE wind 5 to 8 kt becoming variable and less than 5 kt in the afternoon. Partly sunny. Seas 1 to 2 ft.

Tonight

Variable winds 5 kt or less. Increasing clouds. Seas 1 to 2 ft.

Friday

SW wind 6 to 9 kt increasing to 9 to 12 kt in the afternoon. Mostly cloudy. Seas 1 to 2 ft.

Friday Night

SW wind 8 to 11 kt becoming NW after midnight. Rain likely, mainly after 1am. Seas around 2 ft.

Saturday

NNW wind 12 to 14 kt, with gusts as high as 20 kt. A chance of rain before 1pm. Seas 2 to 3 ft.

Saturday Night

N wind 9 to 13 kt. Partly cloudy. Seas 2 to 3 ft.

Sunday

NNW wind 6 to 10 kt becoming WSW in the afternoon. Mostly sunny. Seas around 2 ft.

Sunday Night

WSW wind 12 to 16 kt. Partly cloudy. Seas around 2 ft.

Monday

WNW wind around 16 kt. Mostly sunny. Seas around 2 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.