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18NM WSW Islip NY

[NOTICE]

Last Update: 2:49 am EDT Jul 26, 2026
Forecast Valid: 5am EDT Jul 26, 2026-6pm EDT Aug 1, 2026

Today

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

Tonight

SSE wind 5 to 8 kt becoming SW after midnight. Mostly clear. Seas 1 ft or less.

Monday

S wind 5 to 8 kt becoming S 8 to 11 kt in the afternoon. A chance of showers and thunderstorms after 5pm. Seas 1 ft or less.

Monday Night

SSW wind 10 to 13 kt. A chance of showers and thunderstorms before 8pm, then a chance of showers after 2am. Seas 1 ft or less.

Tuesday

S wind 8 to 11 kt increasing to 13 to 16 kt in the afternoon. Showers likely, then showers and possibly a thunderstorm after 11am. Seas 1 ft or less.

Tuesday Night

S wind 16 to 19 kt. Showers and possibly a thunderstorm before 2am, then showers likely. Seas 1 ft or less.

Wednesday

SSE wind around 13 kt becoming NE in the afternoon. Showers likely. Seas 1 ft or less.

Wednesday Night

N wind around 10 kt. A chance of showers. Seas 1 ft or less.

Thursday

WNW wind 9 to 11 kt. 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.