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New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]

Overnight
SW 14km/h⇓
< 1m
Thursday
⇑SSW 24km/h
< 1m
Thursday Night
W 18km/h⇓
< 1m
Independence Day
⇑W 21km/h
< 1m
Friday Night
W 11km/h
< 1m
Saturday
⇑S 14km/h
< 1m
Saturday Night
SW 18km/h
< 1m
Sunday
⇑S 24km/h
< 1m
Sunday Night
SW 26km/h⇓
< 1m

Associated Zone Forecast which includes this point

Last Update: 7:40 pm EDT Jul 2, 2025
Forecast Valid: 11pm EDT Jul 2, 2025-6pm EDT Jul 9, 2025

View Nearby Observations

Detailed Forecast

Overnight

SW wind 11 to 14 km/h becoming W 8 to 11 km/h after midnight. Patchy fog after 2am. Seas 1 m or less.

Thursday

NW wind 8 to 11 km/h becoming SSW 19 to 24 km/h. Winds could gust as high as 35 km/h. A chance of showers and thunderstorms after 5pm. Patchy fog before 9am. Seas 1 m or less.

Thursday Night

W wind 15 to 18 km/h becoming NW 11 to 14 km/h in the evening. A chance of showers and thunderstorms before 11pm. Seas 1 m or less.

Independence Day

NNW wind 14 to 17 km/h becoming W 18 to 21 km/h in the afternoon. Winds could gust as high as 34 km/h. Sunny. Seas 1 m or less.

Friday Night

W wind 8 to 11 km/h becoming N after midnight. Mostly clear. Seas 1 m or less.

Saturday

NNE wind 8 to 11 km/h becoming S 11 to 14 km/h in the afternoon. Sunny. Seas 1 m or less.

Saturday Night

SW wind 14 to 18 km/h. Partly cloudy. Seas 1 m or less.

Sunday

SW wind 13 to 18 km/h becoming S 19 to 24 km/h in the afternoon. Mostly sunny. Seas 1 m or less.

Sunday Night

SW wind 21 to 26 km/h decreasing to 16 to 21 km/h after midnight. Winds could gust as high as 34 km/h. Partly cloudy. Seas 1 m 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.