For More Weather Information:

18NM WSW Islip NY

[NOTICE]

Last Update: 6:41 pm EST Dec 15, 2025
Forecast Valid: 8pm EST Dec 15, 2025-6pm EST Dec 22, 2025

Tonight

W wind 12 to 14 kt. Mostly cloudy. Seas 1 ft or less.

Tuesday

W wind 7 to 9 kt. Sunny. Seas 1 ft or less.

Tuesday Night

SW wind 9 to 13 kt. Partly cloudy. Seas 1 ft or less.

Wednesday

SW wind 13 to 15 kt. Mostly sunny. Seas 1 ft or less.

Wednesday Night

W wind 9 to 12 kt becoming NW 5 to 8 kt after midnight. Partly cloudy. Seas 1 ft or less.

Thursday

S wind 5 to 8 kt increasing to 9 to 12 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

Thursday Night

S wind 14 to 17 kt increasing to 19 to 22 kt after midnight. Winds could gust as high as 30 kt. Rain, mainly after 1am. Seas 1 ft or less.

Friday

S wind 20 to 22 kt becoming W in the afternoon. Winds could gust as high as 29 kt. Rain likely. Seas 1 ft or less.

Friday Night

WNW wind 18 to 21 kt decreasing to 12 to 15 kt after midnight. Partly cloudy. Seas 1 ft or less.

*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.