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18NM WSW Islip NY

[NOTICE]

Last Update: 2:04 pm EST Nov 3, 2026
Forecast Valid: 2pm EST Nov 3, 2026-6pm EST Nov 9, 2026

This Afternoon

SSW wind around 10 kt. Mostly sunny. Seas 1 ft or less.

Tonight

SW wind 6 to 9 kt. Partly cloudy. Seas 1 ft or less.

Wednesday

Variable winds less than 5 kt becoming S 7 to 12 kt in the morning. Sunny. Seas 1 ft or less.

Wednesday Night

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

Thursday

SSW wind 9 to 14 kt. A slight chance of showers. Seas 1 ft or less.

Thursday Night

SSW wind 9 to 14 kt. Showers. Seas 1 ft or less.

Friday

SSW wind 7 to 9 kt. Showers, with thunderstorms also possible after 10am. Seas 1 ft or less.

Friday Night

SSW wind around 6 kt becoming NNW after midnight. Rain likely and possibly a thunderstorm. Seas 1 ft or less.

Saturday

WNW wind 7 to 10 kt. A chance of rain. 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.