For More Weather Information:

12NM NW Islip NY

[NOTICE]

Last Update: 4:44 pm EDT Aug 17, 2026
Forecast Valid: 1am EDT Aug 18, 2026-6pm EDT Aug 24, 2026

Tuesday

Variable winds 5 kt or less. Patchy fog before 8am. Seas 1 ft or less.

Tuesday Night

Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.

Wednesday

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

Wednesday Night

SSW wind 5 to 8 kt becoming W after midnight. Partly cloudy. Seas around 1 ft.

Thursday

Variable winds 5 kt or less. A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Thursday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms. Seas 1 ft or less.

Friday

NE wind 5 to 7 kt. A chance of showers before 2pm. Seas around 1 ft.

Friday Night

Variable winds 5 kt or less. A chance of showers. Seas 1 ft or less.

Saturday

E wind around 7 kt. A chance of showers. Seas around 1 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.