For More Weather Information:

15NM SW Islip NY

[NOTICE]

Last Update: 10:00 am EST Jan 18, 2026
Forecast Valid: 5pm EST Jan 18, 2026-6pm EST Jan 25, 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH

Late Afternoon

NNE wind around 10 kt. Snow, possibly mixed with rain. Seas around 3 ft.

Tonight

N wind 11 to 15 kt becoming WNW after midnight. Snow, possibly mixed with rain, becoming all snow after 7pm, then gradually ending. Seas 3 to 4 ft.

M.L.King Day

WSW wind 16 to 21 kt increasing to 21 to 26 kt in the afternoon. Mostly sunny. Seas 4 ft building to 6 ft.

Monday Night

W wind 25 to 29 kt. Partly cloudy. Seas 6 to 7 ft.

Tuesday

W wind 22 to 26 kt. Sunny. Seas around 5 ft.

Tuesday Night

W wind 19 to 22 kt decreasing to 14 to 17 kt after midnight. Mostly clear. Seas 5 ft subsiding to 3 ft.

Wednesday

W wind 10 to 15 kt becoming SSW 17 to 22 kt. Mostly sunny. Seas 2 ft building to 5 ft.

Wednesday Night

SW wind 23 to 26 kt decreasing to 20 to 23 kt after midnight. Mostly cloudy. Seas 5 to 6 ft.

Thursday

W wind 19 to 22 kt. Partly sunny. Seas around 5 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.