For More Weather Information:

12NM NW Islip NY

[NOTICE]

Last Update: 12:40 pm EDT Jul 21, 2026
Forecast Valid: 1pm EDT Jul 21, 2026-6pm EDT Jul 27, 2026

This Afternoon

SSE wind around 12 kt. Showers likely and possibly a thunderstorm. Seas around 1 ft.

Tonight

SSW wind around 12 kt. Showers and possibly a thunderstorm. Seas around 1 ft.

Wednesday

WSW wind around 11 kt. A chance of showers and thunderstorms. Seas around 1 ft.

Wednesday Night

W wind 7 to 9 kt becoming NNW after midnight. Partly cloudy. Seas around 1 ft.

Thursday

N wind 5 to 9 kt becoming variable and less than 5 kt in the afternoon. Sunny. Seas around 1 ft.

Thursday Night

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

Friday

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

Friday Night

SE wind 5 to 7 kt becoming variable and less than 5 kt in the evening. Partly cloudy. Seas 1 ft or less.

Saturday

Variable winds less than 5 kt becoming ENE 5 to 7 kt in the morning. Mostly sunny. Seas 1 ft or less.

Winds and seas may be higher in and near tstms.

*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.