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New York, NY Local Forecast Office

19NM WSW Islip NY

Marine Point Forecast

[NOTICE]

Today
⇑NW 18kt
2ft

Small Craft Advisory
Tonight
WNW 12kt⇓
2ft
Monday
NW 11kt
2ft
Monday Night
NNW 14kt
2ft
Tuesday
N 10kt
1ft
Tuesday Night
S 15kt
2-3ft
Wednesday
S 13kt
3ft
Wednesday Night
S 9kt
2ft
Thursday
SW 8kt
2ft

Associated Zone Forecast which includes this point

Last Update: 4:26 am EDT Apr 19, 2026
Forecast Valid: 6am EDT Apr 19, 2026-6pm EDT Apr 25, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING

Today

ESE wind 6 to 9 kt becoming NW 13 to 18 kt in the morning. Winds could gust as high as 24 kt. Showers, mainly between 11am and 5pm. Areas of fog before 8am. Seas around 2 ft.

Tonight

WNW wind 9 to 12 kt decreasing to 6 to 9 kt after midnight. A slight chance of showers before 8pm. Seas around 2 ft.

Monday

NW wind around 11 kt. A chance of showers. Seas around 2 ft.

Monday Night

NNW wind around 14 kt. Partly cloudy. Seas around 2 ft.

Tuesday

N wind 6 to 10 kt becoming SSW in the afternoon. Sunny. Seas around 1 ft.

Tuesday Night

S wind around 15 kt. Increasing clouds. Seas 2 to 3 ft.

Wednesday

S wind 11 to 13 kt. Partly sunny. Seas around 3 ft.

Wednesday Night

S wind 7 to 9 kt becoming E after midnight. Partly cloudy. Seas around 2 ft.

Thursday

NNW wind 6 to 8 kt becoming SW in the afternoon. Mostly sunny. Seas around 2 ft.

*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.