For More Weather Information:

15NM SW Islip NY

[NOTICE]

Last Update: 5:34 am EDT May 17, 2026
Forecast Valid: 10am EDT May 17, 2026-6pm EDT May 23, 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...

Today

WSW wind 8 to 13 kt becoming SSW in the afternoon. Sunny. Seas around 4 ft.

Tonight

SSW wind 11 to 14 kt becoming WSW 6 to 9 kt after midnight. Partly cloudy. Seas 3 to 4 ft.

Monday

E wind 5 to 10 kt becoming SE in the afternoon. Mostly sunny. Seas 2 to 3 ft.

Monday Night

SSE wind 10 to 13 kt becoming SSW 13 to 16 kt after midnight. Partly cloudy. Seas 2 ft building to 4 ft.

Tuesday

SSW wind 12 to 15 kt increasing to 17 to 20 kt in the afternoon. Sunny. Seas 3 to 4 ft.

Tuesday Night

SSW wind 21 to 24 kt decreasing to 17 to 20 kt after midnight. Partly cloudy. Seas 5 to 6 ft.

Wednesday

SSW wind 14 to 17 kt increasing to 18 to 21 kt in the afternoon. Showers likely after 2pm. Seas 4 to 5 ft.

Wednesday Night

WSW wind 10 to 12 kt becoming NNW after midnight. Showers likely. Seas 3 to 4 ft.

Thursday

N wind 6 to 11 kt becoming ESE in the afternoon. Partly sunny. Seas 2 to 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.