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18NM WSW Islip NY

[NOTICE]

Last Update: 12:45 pm EDT Sep 14, 2026
Forecast Valid: 2pm EDT Sep 14, 2026-6pm EDT Sep 20, 2026

This Afternoon

N wind around 13 kt, with gusts as high as 22 kt. Sunny. Seas 1 ft or less.

Tonight

N wind 9 to 11 kt. Mostly clear. Seas 1 ft or less.

Tuesday

NE wind 6 to 8 kt becoming SE in the afternoon. Sunny. Seas 1 ft or less.

Tuesday Night

SE wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas 1 ft or less.

Wednesday

Variable winds less than 5 kt becoming SSW 5 to 8 kt in the morning. Sunny. Seas 1 ft or less.

Wednesday Night

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

Thursday

WSW wind 5 to 8 kt becoming S 8 to 11 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

Thursday Night

SSW wind 8 to 11 kt becoming W after midnight. Partly cloudy. Seas 1 ft or less.

Friday

NW wind around 8 kt becoming ENE in the afternoon. Partly 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.