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18NM WSW Islip NY

[NOTICE]

Last Update: 2:44 pm EDT Oct 1, 2026
Forecast Valid: 3pm EDT Oct 1, 2026-6pm EDT Oct 8, 2026

This Afternoon

SSW wind around 7 kt. Partly sunny. Seas 1 ft or less.

Tonight

SSW wind around 9 kt. Mostly cloudy. Seas 1 ft or less.

Friday

SW wind 8 to 12 kt. A slight chance of thunderstorms after 5pm. Seas 1 ft or less.

Friday Night

WNW wind 8 to 10 kt becoming N after midnight. A chance of showers and thunderstorms. Seas 1 ft or less.

Saturday

N wind 8 to 10 kt becoming ENE in the afternoon. Mostly sunny. Seas 1 ft or less.

Saturday Night

E wind 7 to 9 kt. Partly cloudy. Seas 1 ft or less.

Sunday

E wind 12 to 14 kt. A chance of showers after 2pm. Seas 1 ft or less.

Sunday Night

ENE wind 5 to 7 kt becoming variable and less than 5 kt after midnight. A chance of showers. Seas 1 ft or less.

Monday

WNW wind 5 to 8 kt increasing to 8 to 11 kt in the afternoon. Partly 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.