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15NM SW Islip NY

[NOTICE]

Last Update: 2:32 am EDT May 18, 2026
Forecast Valid: 7am EDT May 18, 2026-6pm EDT May 24, 2026

Today

Variable winds less than 5 kt becoming SSE 6 to 11 kt in the morning. Sunny. Seas 2 to 3 ft.

Tonight

S wind 13 to 16 kt. Mostly cloudy. Seas 3 to 4 ft.

Tuesday

SSW wind 11 to 14 kt increasing to 16 to 19 kt in the afternoon. Mostly sunny. Seas 3 to 4 ft.

Tuesday Night

SSW wind 21 to 24 kt decreasing to 18 to 21 kt after midnight. Partly cloudy. Seas 5 to 6 ft.

Wednesday

SSW wind 14 to 18 kt. Showers and possibly a thunderstorm, mainly after 5pm. Seas around 4 ft.

Wednesday Night

W wind 9 to 12 kt becoming NNW after midnight. Showers, mainly before 2am. Seas 3 to 4 ft.

Thursday

N wind 8 to 11 kt becoming E 5 to 8 kt in the afternoon. Mostly cloudy. Seas 2 to 3 ft.

Thursday Night

Variable winds 5 kt or less. Mostly cloudy. Seas around 2 ft.

Friday

E wind around 13 kt. A chance of showers. Seas 2 to 3 ft.

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.