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18NM WSW Islip NY

[NOTICE]

Last Update: 1:31 pm EST Nov 5, 2026
Forecast Valid: 2pm EST Nov 5, 2026-6pm EST Nov 11, 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

This Afternoon

SSW wind around 17 kt, with gusts as high as 23 kt. A chance of showers, mainly before 4pm. Seas 1 ft or less.

Tonight

SSW wind 14 to 17 kt decreasing to 9 to 12 kt after midnight. Rain, with thunderstorms also possible after 4am. Seas 1 ft or less.

Friday

SSW wind 5 to 7 kt becoming NW in the afternoon. Rain and possibly a thunderstorm before 4pm, then rain likely. Seas 1 ft or less.

Friday Night

Variable winds 5 kt or less. Rain likely, mainly before 7pm. Seas 1 ft or less.

Saturday

NW wind 6 to 9 kt becoming W 10 to 13 kt in the afternoon. A slight chance of showers after 1pm. Seas 1 ft or less.

Saturday Night

W wind 15 to 18 kt. A chance of showers after 1am. Seas 1 ft or less.

Sunday

WNW wind 14 to 16 kt. Sunny. Seas 1 ft or less.

Sunday Night

W wind 11 to 13 kt, with gusts as high as 20 kt. Mostly clear. Seas 1 ft or less.

Monday

WNW wind 13 to 15 kt, with gusts as high as 22 kt. Sunny. 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.