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18NM WSW Islip NY

[NOTICE]

Last Update: 2:24 am EDT Jul 30, 2026
Forecast Valid: 3am EDT Jul 30, 2026-6pm EDT Aug 5, 2026

Thursday

WNW wind 8 to 11 kt becoming N in the afternoon. A chance of showers, with thunderstorms also possible after 2pm. Seas 1 ft or less.

Thursday Night

Variable winds 5 kt or less. A slight chance of showers before 8pm. Seas 1 ft or less.

Friday

Variable winds less than 5 kt becoming SSW 5 to 7 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

Friday Night

SSW wind 6 to 9 kt. Partly cloudy. Seas 1 ft or less.

Saturday

Variable winds less than 5 kt becoming S 5 to 10 kt in the afternoon. Partly sunny. Seas 1 ft or less.

Saturday Night

SSW wind 9 to 12 kt. Mostly cloudy. Seas 1 ft or less.

Sunday

S wind 7 to 10 kt increasing to 10 to 13 kt in the afternoon. Mostly cloudy. Seas 1 ft or less.

Sunday Night

SSW wind 6 to 10 kt. Showers likely. Seas 1 ft or less.

Monday

SW wind around 6 kt. A chance of showers. 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.