For More Weather Information:

9NM SW Islip NY

[NOTICE]

Last Update: 7:47 am EDT Jul 12, 2026
Forecast Valid: 12pm EDT Jul 12, 2026-6pm EDT Jul 18, 2026

This Afternoon

SE wind around 7 kt. Sunny. Seas around 1 ft.

Tonight

S wind around 6 kt becoming variable and less than 5 kt in the evening. Clear. Seas 1 ft or less.

Monday

Variable winds less than 5 kt becoming SSW 5 to 10 kt in the afternoon. Sunny. Seas 1 ft or less.

Monday Night

SSW wind around 10 kt becoming WSW after midnight. Mostly clear. Seas around 1 ft.

Tuesday

SW wind 8 to 11 kt increasing to 11 to 14 kt in the afternoon. Winds could gust as high as 20 kt. Sunny. Seas 1 to 2 ft.

Tuesday Night

WSW wind around 15 kt, with gusts as high as 21 kt. Mostly clear. Seas around 2 ft.

Wednesday

WSW wind 11 to 13 kt. Sunny. Seas 1 to 2 ft.

Wednesday Night

NW wind 6 to 11 kt. Partly cloudy. Seas around 1 ft.

Thursday

Variable winds less than 5 kt becoming WSW 5 to 10 kt in the morning. Mostly 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.