For More Weather Information:

12NM NW Islip NY

[NOTICE]

Last Update: 7:53 pm EDT Oct 18, 2026
Forecast Valid: 9pm EDT Oct 18, 2026-6pm EDT Oct 25, 2026

Tonight

Variable winds 5 kt or less. Clear. Seas 1 ft or less.

Monday

NE wind 8 to 11 kt. Sunny. Seas around 1 ft.

Monday Night

NNE wind 11 to 15 kt. Partly cloudy. Seas 1 to 2 ft.

Tuesday

NNE wind 13 to 17 kt. Cloudy, then gradually becoming mostly sunny. Seas around 2 ft.

Tuesday Night

NNE wind 16 to 19 kt increasing to 20 to 23 kt after midnight. Mostly clear. Seas around 2 ft.

Wednesday

NNE wind 18 to 21 kt decreasing to 12 to 15 kt in the afternoon. Mostly sunny. Seas around 2 ft.

Wednesday Night

NNE wind around 14 kt, with gusts as high as 20 kt. Partly cloudy. Seas around 2 ft.

Thursday

NNW wind 9 to 12 kt. Mostly sunny. Seas 1 to 2 ft.

Thursday Night

N wind 10 to 15 kt, with gusts as high as 21 kt. Mostly clear. Seas 1 to 2 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.