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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

Overnight
SW 7kt
< 1ft
Thursday
⇑WSW 7kt
< 1ft
Thursday Night
SSW 10kt⇓
< 1ft
Friday
⇑W 7kt
< 1ft
Friday Night
WNW 7kt
< 1ft
Independence Day
⇑W 6kt
< 1ft
Saturday Night
Light Wind
< 1ft
Sunday
Light Wind
< 1ft
Sunday Night
SSE 6kt⇓
< 1ft

Associated Zone Forecast which includes this point

Last Update: 8:17 pm EDT Jul 1, 2026
Forecast Valid: 12am EDT Jul 2, 2026-6pm EDT Jul 8, 2026

View Nearby Observations

Detailed Forecast

Overnight

SW wind around 7 kt. Isolated showers and thunderstorms. Seas 1 ft or less.

Thursday

Variable winds less than 5 kt becoming WSW 5 to 7 kt in the afternoon. Sunny. Seas 1 ft or less.

Thursday Night

SSW wind 5 to 10 kt becoming variable and less than 5 kt after midnight. Clear. Seas 1 ft or less.

Friday

Variable winds less than 5 kt becoming W 5 to 7 kt in the afternoon. A chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Friday Night

WNW wind 5 to 7 kt. A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Seas 1 ft or less.

Independence Day

Variable winds less than 5 kt becoming W around 6 kt in the afternoon. A chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Saturday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms before 8pm. Seas 1 ft or less.

Sunday

Variable winds 5 kt or less. A chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Sunday Night

SSE wind around 6 kt becoming variable and less than 5 kt in the evening. A chance of showers and thunderstorms, then showers likely after 8pm. 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.