For More Weather Information:

12NM NW Islip NY

[NOTICE]

Last Update: 10:15 am EDT Apr 19, 2026
Forecast Valid: 11am EDT Apr 19, 2026-6pm EDT Apr 25, 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL NOON EDT TODAY...

Today

NW wind 7 to 10 kt increasing to 11 to 14 kt in the afternoon. Showers, mainly after noon. Seas around 1 ft.

Tonight

W wind 5 to 10 kt. Mostly clear. Seas 1 ft or less.

Monday

NW wind 7 to 10 kt. A chance of showers. Seas 1 ft or less.

Monday Night

NNW wind around 13 kt. Mostly clear. Seas 1 ft or less.

Tuesday

N wind 5 to 8 kt becoming variable and less than 5 kt. Sunny. Seas 1 ft or less.

Tuesday Night

S wind around 12 kt. A chance of showers after 2am. Seas 1 ft or less.

Wednesday

S wind 8 to 10 kt. A chance of showers before 8am. Seas 1 ft or less.

Wednesday Night

SE wind around 6 kt becoming NNE after midnight. Mostly clear. Seas 1 ft or less.

Thursday

NNW wind 5 to 7 kt becoming WNW in the afternoon. 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.