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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

Friday
N 6kt⇓
< 1ft
Friday Night
Light Wind
< 1ft
Saturday
⇑SSW 13kt
< 1ft
Saturday Night
SW 15kt
1ft
Sunday
NW 12kt
1ft
Sunday Night
NNW 7kt
< 1ft
Monday
Light Wind
< 1ft
Monday Night
S 9kt
< 1ft
Tuesday
S 12kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 2:26 am EDT Jul 17, 2026
Forecast Valid: 4am EDT Jul 17, 2026-6pm EDT Jul 23, 2026

View Nearby Observations

Detailed Forecast

Friday

N wind around 6 kt becoming variable and less than 5 kt in the morning. Widespread smoke, mainly before 8am. Seas 1 ft or less.

Friday Night

Variable winds 5 kt or less. Patchy smoke after 7pm. Seas 1 ft or less.

Saturday

SSW wind 7 to 10 kt increasing to 10 to 13 kt in the afternoon. Winds could gust as high as 23 kt. Showers and possibly a thunderstorm, mainly after 2pm. Areas of smoke. Seas 1 ft or less.

Saturday Night

SSW wind 13 to 15 kt becoming WSW after midnight. Winds could gust as high as 22 kt. Showers and possibly a thunderstorm before 2am. Seas around 1 ft.

Sunday

NW wind 9 to 12 kt. Partly sunny, then gradually becoming sunny. Seas around 1 ft.

Sunday Night

NNW wind 5 to 7 kt. Mostly clear. Seas 1 ft or less.

Monday

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

Monday Night

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

Tuesday

S wind 8 to 12 kt. A chance of showers and thunderstorms after 2pm. 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.