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For More Weather Information:

9NM E Islip NY

[NOTICE]

Last Update: 5:48 am EDT Aug 20, 2026
Forecast Valid: 9am EDT Aug 20, 2026-6pm EDT Aug 26, 2026

Today

Variable winds less than 5 kt becoming S 5 to 7 kt in the afternoon. Showers likely and possibly a thunderstorm, mainly after 5pm. Seas 1 ft or less.

Tonight

NNE wind 11 to 14 kt becoming ENE in the evening. Showers and possibly a thunderstorm before 11pm, then a chance of showers. Seas 1 ft or less.

Friday

NE wind 11 to 14 kt. A chance of showers, mainly between 8am and 11am. Seas around 1 ft.

Friday Night

ENE wind around 10 kt. Showers likely after 2am. Seas 1 ft or less.

Saturday

NE wind around 11 kt becoming E in the afternoon. Showers, with thunderstorms also possible after 2pm. Seas around 1 ft.

Saturday Night

E wind 6 to 9 kt becoming W after midnight. Showers likely. Seas 1 ft or less.

Sunday

N wind 5 to 8 kt becoming SSW 8 to 11 kt in the afternoon. A chance of showers. Seas 1 ft or less.

Sunday Night

SW wind 8 to 10 kt becoming W after midnight. Partly cloudy. Seas 1 ft or less.

Monday

W wind 8 to 12 kt. Sunny. Seas 1 ft or less.

Winds and waves 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.