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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

Today
⇑SSW 12kt
1ft
Tonight
S 8kt⇓
< 1ft
Sunday
⇑S 7kt
< 1ft
Sunday Night
⇑N 7kt
< 1ft
Monday
N 7kt⇓
< 1ft
Monday Night
⇑NNW 10kt
< 1ft
Tuesday
NW 10kt
1ft
Tuesday Night
Light Wind
< 1ft
Wednesday
⇑S 12kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 6:10 am EDT May 9, 2026
Forecast Valid: 6am EDT May 9, 2026-6pm EDT May 15, 2026

View Nearby Observations

Detailed Forecast

Today

ESE wind 5 to 8 kt becoming SSW 9 to 12 kt in the morning. Showers and possibly a thunderstorm, mainly after 2pm. Seas around 1 ft.

Tonight

S wind 5 to 8 kt becoming variable and less than 5 kt after midnight. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 10pm. Areas of fog after 10pm. Seas 1 ft or less.

Sunday

Variable winds less than 5 kt becoming S 5 to 7 kt in the afternoon. A slight chance of showers after 4pm. Patchy fog before 10am. Seas 1 ft or less.

Sunday Night

Variable winds less than 5 kt becoming N 5 to 7 kt after midnight. Showers likely, mainly after midnight. Seas 1 ft or less.

Monday

N wind 5 to 7 kt becoming variable and less than 5 kt in the afternoon. A chance of showers before 2pm. Seas 1 ft or less.

Monday Night

Variable winds less than 5 kt becoming NNW 5 to 10 kt in the evening. Partly cloudy. Seas 1 ft or less.

Tuesday

NW wind 6 to 10 kt. Sunny. Seas around 1 ft.

Tuesday Night

Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.

Wednesday

Variable winds less than 5 kt becoming S 7 to 12 kt 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.