For More Weather Information:

9NM SW Islip NY

[NOTICE]

Last Update: 12:38 pm EST Nov 20, 2025
Forecast Valid: 3pm EST Nov 20, 2025-6pm EST Nov 27, 2025

This Afternoon

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

Tonight

Variable winds 5 kt or less. Increasing clouds. Seas 1 ft or less.

Friday

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

Friday Night

WSW wind 5 to 9 kt becoming NNW after midnight. Rain likely, mainly after 1am. Seas 1 ft or less.

Saturday

NNW wind 9 to 12 kt. A chance of rain before 1pm. Seas 1 ft or less.

Saturday Night

N wind 9 to 12 kt. Partly cloudy. Seas 1 ft or less.

Sunday

NNW wind 7 to 10 kt becoming W in the afternoon. Mostly sunny. Seas 1 ft or less.

Sunday Night

W wind 10 to 12 kt. Partly cloudy. Seas 1 ft or less.

Monday

WNW wind 9 to 12 kt. 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.