For More Weather Information:

15NM SW Islip NY

[NOTICE]

Last Update: 2:25 pm EDT May 21, 2026
Forecast Valid: 2am EDT May 22, 2026-6pm EDT May 28, 2026

Friday

E wind 12 to 17 kt. Mostly cloudy. Seas 2 ft building to 4 ft.

Friday Night

E wind around 13 kt. A chance of rain after 5am. Seas 3 to 4 ft.

Saturday

E wind 17 to 22 kt. Rain, mainly after 11am. Seas 4 ft building to 6 ft.

Saturday Night

E wind 23 to 27 kt. Rain. Seas 6 ft building to 8 ft.

Sunday

E wind 24 to 29 kt decreasing to 18 to 23 kt in the afternoon. Rain. Seas 8 to 9 ft.

Sunday Night

ENE wind 6 to 10 kt becoming NNE after midnight. Showers likely, mainly before 8pm. Seas 6 to 7 ft.

Memorial Day

Variable winds less than 5 kt becoming SSW around 6 kt in the afternoon. A chance of showers. Seas 5 to 6 ft.

Monday Night

Variable winds 5 kt or less. A chance of showers. Seas around 4 ft.

Tuesday

Variable winds less than 5 kt becoming S 5 to 7 kt in the afternoon. Mostly cloudy. 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.