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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

Today
ESE 6kt
< 1ft
Tonight
⇑W 7kt
< 1ft
Monday
NNW 11kt
< 1ft
Monday Night
N 11kt
< 1ft
Tuesday
NE 8kt⇓
< 1ft
Tuesday Night
SSE 6kt⇓
< 1ft
Wednesday
Light Wind
< 1ft
Wednesday Night
S 6kt⇓
< 1ft
Thursday
Light Wind
< 1ft

Associated Zone Forecast which includes this point

Last Update: 2:20 am EDT Sep 13, 2026
Forecast Valid: 7am EDT Sep 13, 2026-6pm EDT Sep 19, 2026

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Detailed Forecast

Today

ESE wind around 6 kt becoming NW in the afternoon. Showers and possibly a thunderstorm, mainly before 2pm. Some of the storms could produce heavy rainfall. Seas 1 ft or less.

Tonight

Variable winds less than 5 kt becoming W 5 to 7 kt in the evening. A chance of showers, mainly after 5am. Seas 1 ft or less.

Monday

NNW wind around 11 kt. A chance of showers before 8am. Seas 1 ft or less.

Monday Night

N wind around 11 kt. Clear. Seas 1 ft or less.

Tuesday

NE wind 5 to 8 kt becoming variable and less than 5 kt in the afternoon. Sunny. Seas 1 ft or less.

Tuesday Night

SSE wind around 6 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Seas 1 ft or less.

Wednesday

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

Wednesday Night

S wind around 6 kt becoming variable and less than 5 kt in the evening. Partly cloudy. Seas 1 ft or less.

Thursday

Variable winds 5 kt or less. Mostly sunny. 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.