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18NM WSW Islip NY

[NOTICE]

Last Update: 8:55 pm EDT Apr 28, 2026
Forecast Valid: 11pm EDT Apr 28, 2026-6pm EDT May 5, 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON...

Overnight

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

Wednesday

ESE wind 5 to 8 kt becoming SSE 8 to 11 kt in the afternoon. A slight chance of showers after 5pm. Seas 1 ft or less.

Wednesday Night

SE wind 8 to 10 kt. Showers, with thunderstorms also possible after 2am. Seas 1 ft or less.

Thursday

NW wind 8 to 11 kt. A chance of showers, mainly before 2pm. Seas 1 ft or less.

Thursday Night

NW wind around 14 kt. A slight chance of showers before 8pm. Seas 1 ft or less.

Friday

W wind around 14 kt. Sunny. Seas 1 ft or less.

Friday Night

WNW wind 5 to 8 kt. Partly cloudy. Seas 1 ft or less.

Saturday

NW wind 6 to 10 kt becoming WSW in the afternoon. Mostly sunny. Seas 1 ft or less.

Saturday Night

W wind around 6 kt becoming NW in the evening. Mostly cloudy. Seas 1 ft or less.

Winds and seas may be higher in and near tstms.

*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.