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18NM WSW Islip NY

[NOTICE]

Last Update: 2:23 pm EDT Sep 5, 2026
Forecast Valid: 2pm EDT Sep 5, 2026-6pm EDT Sep 11, 2026

This Afternoon

N wind around 6 kt. Sunny. Seas 1 ft or less.

Tonight

ENE wind 5 to 9 kt. A chance of showers after 11pm. Seas 1 ft or less.

Sunday

NE wind around 7 kt. A slight chance of showers before 2pm. Seas 1 ft or less.

Sunday Night

Variable winds less than 5 kt becoming NNW 5 to 7 kt after midnight. Mostly clear. Seas 1 ft or less.

Labor Day

N wind around 7 kt. Sunny. Seas 1 ft or less.

Monday Night

WSW wind around 6 kt becoming WNW after midnight. Mostly clear. Seas 1 ft or less.

Tuesday

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

Tuesday Night

SSW wind around 6 kt. Mostly cloudy. Seas 1 ft or less.

Wednesday

SSW wind 7 to 10 kt increasing to 11 to 14 kt in the afternoon. Winds could gust as high as 20 kt. Mostly sunny. Seas 1 ft or less.

*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.