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18NM WSW Islip NY

[NOTICE]

Last Update: 2:33 am EDT Sep 4, 2026
Forecast Valid: 6am EDT Sep 4, 2026-6pm EDT Sep 10, 2026

Today

W wind 5 to 7 kt becoming NW in the morning. A chance of showers and thunderstorms before 8am. Seas 1 ft or less.

Tonight

N wind around 7 kt. Partly cloudy. Seas 1 ft or less.

Saturday

N wind around 8 kt. Sunny. Seas 1 ft or less.

Saturday Night

NE wind 6 to 9 kt. Isolated showers before 2am. Seas 1 ft or less.

Sunday

NE wind 8 to 10 kt. Mostly sunny. Seas 1 ft or less.

Sunday Night

E wind around 6 kt becoming N after midnight. Mostly clear. Seas 1 ft or less.

Labor Day

N wind 5 to 7 kt becoming W in the afternoon. Sunny. Seas 1 ft or less.

Monday Night

SSW wind around 7 kt becoming W after midnight. Partly cloudy. Seas 1 ft or less.

Tuesday

WNW wind around 7 kt becoming WSW in the afternoon. 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.