For More Weather Information:

12NM NW Islip NY

[NOTICE]

Last Update: 8:23 pm EDT Sep 15, 2026
Forecast Valid: 12am EDT Sep 16, 2026-6pm EDT Sep 22, 2026

Overnight

Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.

Wednesday

Variable winds less than 5 kt becoming SW around 6 kt in the morning. Mostly sunny. Seas 1 ft or less.

Wednesday Night

S wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Seas 1 ft or less.

Thursday

Variable winds less than 5 kt becoming SSW 5 to 7 kt in the afternoon. Partly sunny. Seas 1 ft or less.

Thursday Night

S wind around 9 kt becoming WSW after midnight. A chance of showers. Seas 1 ft or less.

Friday

N wind 8 to 10 kt. Mostly cloudy, then gradually becoming sunny. Seas 1 ft or less.

Friday Night

NE wind around 10 kt. Partly cloudy. Seas 1 ft or less.

Saturday

NE wind 6 to 9 kt becoming E in the afternoon. Mostly sunny. Seas 1 ft or less.

Saturday Night

SE wind around 8 kt. A chance of showers. 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.