For More Weather Information:

15NM SW Islip NY

[NOTICE]

Last Update: 7:56 pm EDT Apr 30, 2026
Forecast Valid: 10pm EDT Apr 30, 2026-6pm EDT May 7, 2026

Tonight

WNW wind 8 to 11 kt becoming NNW after midnight. Partly cloudy. Seas around 3 ft.

Friday

NW wind 9 to 12 kt becoming SW in the afternoon. Sunny. Seas around 3 ft.

Friday Night

SSW wind 9 to 13 kt becoming WSW after midnight. A chance of showers, mainly after 2am. Seas 3 to 4 ft.

Saturday

SW wind 6 to 8 kt becoming SSE in the afternoon. A chance of showers, mainly after 2pm. Seas 2 to 3 ft.

Saturday Night

SSE wind 7 to 10 kt becoming N after midnight. A chance of showers. Seas around 2 ft.

Sunday

NNW wind around 14 kt becoming WNW in the afternoon. Mostly sunny. Seas around 3 ft.

Sunday Night

WNW wind 8 to 12 kt becoming W after midnight. Mostly clear. Seas around 3 ft.

Monday

SSW wind 12 to 15 kt increasing to 17 to 20 kt in the afternoon. Sunny. Seas 3 ft building to 5 ft.

Monday Night

SSW wind 22 to 24 kt. Partly cloudy. Seas 6 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.