For More Weather Information:

12NM NW Islip NY

[NOTICE]

Last Update: 2:30 am EDT Jul 31, 2026
Forecast Valid: 10am EDT Jul 31, 2026-6pm EDT Aug 6, 2026

Today

Variable winds 5 kt or less. Sunny. Seas 1 ft or less.

Tonight

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

Saturday

Variable winds less than 5 kt becoming S around 6 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

Saturday Night

S wind 7 to 9 kt. Mostly cloudy. Seas 1 ft or less.

Sunday

S wind 6 to 11 kt. Mostly cloudy. Seas 1 ft or less.

Sunday Night

S wind 8 to 10 kt. A chance of showers, then showers likely and possibly a thunderstorm after 2am. Seas 1 ft or less.

Monday

SSW wind around 10 kt. Showers likely and possibly a thunderstorm. Seas 1 ft or less.

Monday Night

SW wind around 7 kt becoming W after midnight. A chance of showers and thunderstorms. Seas 1 ft or less.

Tuesday

NW wind around 6 kt becoming SSW in the afternoon. 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.