For More Weather Information:

18NM WSW Islip NY

[NOTICE]

Last Update: 12:20 pm EDT Oct 21, 2026
Forecast Valid: 1pm EDT Oct 21, 2026-6pm EDT Oct 27, 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

This Afternoon

NNE wind 17 to 19 kt. Partly sunny. Seas 1 ft or less.

Tonight

N wind 13 to 17 kt, with gusts as high as 25 kt. Mostly cloudy. Seas 1 ft or less.

Thursday

N wind 15 to 17 kt, with gusts as high as 23 kt. Sunny. Seas 1 ft or less.

Thursday Night

N wind 10 to 13 kt increasing to 14 to 17 kt in the evening. Clear. Seas 1 ft or less.

Friday

N wind 9 to 13 kt. Sunny. Seas 1 ft or less.

Friday Night

NNE wind 6 to 8 kt. Mostly clear. Seas 1 ft or less.

Saturday

NNE wind around 6 kt becoming variable and less than 5 kt. Sunny. Seas 1 ft or less.

Saturday Night

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

Sunday

Variable winds less than 5 kt becoming WSW around 6 kt in the afternoon. Sunny. 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.