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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

This Afternoon
Light Wind
< 1ft
Tonight
Light Wind
< 1ft
Saturday
ENE 6kt
< 1ft
Saturday Night
SSE 8kt
< 1ft
Sunday
S 6kt
< 1ft
Sunday Night
⇑WNW 7kt
< 1ft
Monday
NNW 11kt
< 1ft
Monday Night
NNE 10kt
< 1ft
Tuesday
NE 8kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 2:27 pm EDT Sep 11, 2026
Forecast Valid: 3pm EDT Sep 11, 2026-6pm EDT Sep 18, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

Variable winds 5 kt or less. Mostly sunny. Seas 1 ft or less.

Tonight

Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.

Saturday

ENE wind around 6 kt becoming SE in the afternoon. Mostly sunny. Seas 1 ft or less.

Saturday Night

SSE wind around 8 kt. A chance of showers and thunderstorms between 2am and 5am, then showers likely and possibly a thunderstorm after 5am. Seas 1 ft or less.

Sunday

S wind around 6 kt becoming WSW in the afternoon. Showers and possibly a thunderstorm before 2pm, then a slight chance of showers. Seas 1 ft or less.

Sunday Night

Variable winds less than 5 kt becoming WNW 5 to 7 kt in the evening. Partly cloudy. Seas 1 ft or less.

Monday

NNW wind 9 to 11 kt. Sunny. Seas 1 ft or less.

Monday Night

NNE wind around 10 kt. Mostly clear. Seas 1 ft or less.

Tuesday

NE wind 5 to 8 kt becoming E in the afternoon. 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.