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18NM WSW Islip NY

[NOTICE]

Last Update: 1:34 pm EST Nov 2, 2026
Forecast Valid: 2pm EST Nov 2, 2026-6pm EST Nov 8, 2026

This Afternoon

SW wind around 12 kt. Sunny. Seas 1 ft or less.

Tonight

SSW wind 6 to 11 kt becoming WSW after midnight. Mostly clear. Seas 1 ft or less.

Tuesday

WSW wind 5 to 10 kt becoming SSW in the afternoon. Mostly sunny. Seas 1 ft or less.

Tuesday Night

SW wind 5 to 9 kt. Partly cloudy. Seas 1 ft or less.

Wednesday

Variable winds less than 5 kt becoming S 6 to 11 kt in the morning. Mostly sunny. Seas 1 ft or less.

Wednesday Night

S wind 7 to 9 kt. Increasing clouds. Seas 1 ft or less.

Thursday

S wind 8 to 13 kt. A chance of showers after 1pm. Seas 1 ft or less.

Thursday Night

SSW wind 6 to 10 kt. Rain and possibly a thunderstorm. Seas 1 ft or less.

Friday

SSW wind 5 to 7 kt. Rain likely, mainly before 1pm. 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.