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18NM WSW Islip NY

[NOTICE]

Last Update: 6:45 am EDT May 14, 2026
Forecast Valid: 1pm EDT May 14, 2026-6pm EDT May 20, 2026

This Afternoon

WNW wind around 6 kt. Showers and possibly a thunderstorm before 2pm, then a chance of showers. Seas 1 ft or less.

Tonight

WNW wind around 8 kt. A chance of showers, mainly before 8pm. Seas 1 ft or less.

Friday

WNW wind 7 to 9 kt. A slight chance of showers between 8am and 11am. Seas 1 ft or less.

Friday Night

N wind around 6 kt becoming SW after midnight. Partly cloudy. Seas 1 ft or less.

Saturday

WSW wind 5 to 8 kt becoming S 10 to 13 kt in the afternoon. Sunny. Seas 1 ft or less.

Saturday Night

SSW wind 11 to 14 kt decreasing to 7 to 10 kt after midnight. Partly cloudy. Seas 1 ft or less.

Sunday

SW wind 7 to 10 kt. Mostly sunny. Seas 1 ft or less.

Sunday Night

Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.

Monday

Variable winds less than 5 kt becoming SE 5 to 9 kt in the morning. Mostly 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.