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18NM WSW Islip NY

[NOTICE]

Last Update: 2:21 am EDT May 19, 2026
Forecast Valid: 5am EDT May 19, 2026-6pm EDT May 25, 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EDT TODAY THROUGH

Today

SSW wind 8 to 11 kt increasing to 12 to 15 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

Tonight

SSW wind 11 to 16 kt. Partly cloudy. Seas 1 ft or less.

Wednesday

SSW wind 9 to 14 kt. Showers and possibly a thunderstorm after 2pm. Seas 1 ft or less.

Wednesday Night

NW wind 7 to 9 kt becoming N after midnight. Showers and possibly a thunderstorm before 11pm, then showers likely. Seas 1 ft or less.

Thursday

N wind 5 to 10 kt becoming E in the afternoon. A chance of showers, mainly before 8am. Seas 1 ft or less.

Thursday Night

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

Friday

E wind around 11 kt becoming ESE in the afternoon. A chance of showers after 2pm. Seas 1 ft or less.

Friday Night

E wind 6 to 9 kt. Showers likely. Seas 1 ft or less.

Saturday

E wind 12 to 14 kt, with gusts as high as 20 kt. Showers. 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.