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18NM WSW Islip NY

[NOTICE]

Last Update: 2:19 am EDT May 21, 2026
Forecast Valid: 2am EDT May 21, 2026-6pm EDT May 27, 2026

Thursday

N wind around 9 kt becoming NE in the afternoon. Showers, mainly before 2pm. Seas 1 ft or less.

Thursday Night

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

Friday

ENE wind 11 to 13 kt becoming E in the afternoon. Partly sunny. Seas 1 ft or less.

Friday Night

E wind around 10 kt. A chance of showers after 2am. Seas 1 ft or less.

Saturday

E wind 12 to 16 kt, with gusts as high as 22 kt. Showers, mainly after 8am. Seas 1 ft or less.

Saturday Night

E wind around 18 kt, with gusts as high as 25 kt. Showers. Seas 1 ft or less.

Sunday

E wind 18 to 21 kt decreasing to 15 to 18 kt in the afternoon. Winds could gust as high as 28 kt. Showers, mainly before 2pm. Seas 1 ft or less.

Sunday Night

NE wind 5 to 7 kt becoming variable and less than 5 kt after midnight. A chance of showers. Seas 1 ft or less.

Memorial Day

Variable winds 5 kt or less. 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.