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18NM WSW Islip NY

[NOTICE]

Last Update: 7:51 am EDT Apr 14, 2026
Forecast Valid: 10am EDT Apr 14, 2026-6pm EDT Apr 20, 2026

Today

SW wind 5 to 8 kt becoming S 9 to 12 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

Tonight

WSW wind 8 to 12 kt. Partly cloudy. Seas 1 ft or less.

Wednesday

WSW wind 6 to 11 kt becoming S in the afternoon. A slight chance of showers after 2pm. Seas 1 ft or less.

Wednesday Night

SW wind 6 to 10 kt. A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Seas 1 ft or less.

Thursday

S wind 6 to 11 kt. Partly sunny. Seas 1 ft or less.

Thursday Night

SSW wind 7 to 11 kt becoming WSW after midnight. Mostly cloudy. Seas 1 ft or less.

Friday

W wind 7 to 9 kt becoming S in the afternoon. A chance of showers after 2pm. Seas 1 ft or less.

Friday Night

NE wind around 6 kt. A chance of showers. Seas 1 ft or less.

Saturday

ENE wind 6 to 8 kt becoming ESE in the afternoon. Partly 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.