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18NM WSW Islip NY

[NOTICE]

Last Update: 9:59 am EDT Sep 30, 2026
Forecast Valid: 10am EDT Sep 30, 2026-6pm EDT Oct 6, 2026

Today

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

Tonight

SSW wind 7 to 9 kt becoming WSW after midnight. Mostly cloudy. Seas 1 ft or less.

Thursday

SSW wind 6 to 10 kt. Mostly cloudy. Seas 1 ft or less.

Thursday Night

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

Friday

SSW wind 8 to 11 kt. Mostly sunny. Seas 1 ft or less.

Friday Night

WSW wind 10 to 12 kt becoming NNW after midnight. A chance of showers before 2am. Seas 1 ft or less.

Saturday

N wind 8 to 11 kt becoming NE in the afternoon. Mostly sunny. Seas 1 ft or less.

Saturday Night

ENE wind 5 to 7 kt. Mostly cloudy. Seas 1 ft or less.

Sunday

E wind around 10 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.