For More Weather Information:

New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]

Tonight
SSW 14kt⇓
< 1ft
Friday
⇑SSW 12kt
< 1ft
Friday Night
SW 8kt
< 1ft
Independence Day
⇑WSW 11kt
< 1ft
Saturday Night
W 8kt
< 1ft
Sunday
SE 9kt
< 1ft
Sunday Night
Light Wind
< 1ft
Monday
ESE 12kt
< 1ft
Monday Night
ESE 11kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 2:25 pm EDT Jul 2, 2026
Forecast Valid: 7pm EDT Jul 2, 2026-6pm EDT Jul 9, 2026

View Nearby Observations

Detailed Forecast

Tonight

SSW wind 11 to 14 kt becoming W 7 to 10 kt after midnight. Clear. Seas 1 ft or less.

Friday

Variable winds less than 5 kt becoming SSW 7 to 12 kt in the morning. A slight chance of thunderstorms after 5pm. Seas 1 ft or less.

Friday Night

SW wind 5 to 8 kt becoming WNW after midnight. A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Seas 1 ft or less.

Independence Day

WSW wind 5 to 8 kt increasing to 8 to 11 kt in the afternoon. Showers likely and possibly a thunderstorm after 2pm. Seas 1 ft or less.

Saturday Night

W wind 5 to 8 kt becoming N after midnight. Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Seas 1 ft or less.

Sunday

NNE wind 6 to 9 kt becoming SE in the afternoon. A chance of showers after 2pm. Seas 1 ft or less.

Sunday Night

Variable winds 5 kt or less. Showers likely, mainly after 2am. Seas 1 ft or less.

Monday

ESE wind 7 to 12 kt. Showers likely. Seas 1 ft or less.

Monday Night

ESE wind 8 to 11 kt. A chance of showers before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then showers likely after 2am. 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.