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Hazardous Weather Conditions

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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

    • Today

      Today:Variable winds less than 5 kt becoming SSE 5 to 7 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

      ⇑SSE 7kt
      < 1ft

    • Tonight

      Tonight:S wind 7 to 9 kt. A chance of showers after 5am. Seas 1 ft or less.

      S 9kt
      < 1ft

    • Tuesday

      Tuesday:S wind 8 to 11 kt increasing to 11 to 14 kt in the afternoon. Winds could gust as high as 22 kt. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Seas 1 ft or less.

      ⇑S 14kt
      < 1ft

    • Tuesday Night

      Tuesday Night:SE wind around 16 kt, with gusts as high as 23 kt. Showers and possibly a thunderstorm. Seas 1 ft or less.

      SE 16kt
      < 1ft

    • Wednesday

      Wednesday:E wind 10 to 14 kt. Showers likely, then showers and possibly a thunderstorm after 2pm. Seas 1 ft or less.

      E 14kt
      < 1ft

    • Wednesday Night

      Wednesday Night:ENE wind around 11 kt becoming N after midnight. Showers and possibly a thunderstorm. Seas 1 ft or less.

      N 11kt
      < 1ft

    • Thursday

      Thursday:N wind 10 to 12 kt. Showers likely, mainly before 2pm. Seas 1 ft or less.

      N 12kt
      < 1ft

    • Thursday Night

      Thursday Night:NNW wind 7 to 9 kt. A chance of showers. Seas 1 ft or less.

      NNW 9kt
      < 1ft

    • Friday

      Friday:NNW wind 5 to 7 kt. Mostly sunny. Seas 1 ft or less.

      NNW 7kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 5:44 am EDT Jul 27, 2026
Forecast Valid: 9am EDT Jul 27, 2026-6pm EDT Aug 2, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY AFTERNOON THROUGH

Today
Variable winds less than 5 kt becoming SSE 5 to 7 kt in the afternoon. Mostly sunny. Seas 1 ft or less.
Tonight
S wind 7 to 9 kt. A chance of showers after 5am. Seas 1 ft or less.
Tuesday
S wind 8 to 11 kt increasing to 11 to 14 kt in the afternoon. Winds could gust as high as 22 kt. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Seas 1 ft or less.
Tuesday Night
SE wind around 16 kt, with gusts as high as 23 kt. Showers and possibly a thunderstorm. Seas 1 ft or less.
Wednesday
E wind 10 to 14 kt. Showers likely, then showers and possibly a thunderstorm after 2pm. Seas 1 ft or less.
Wednesday Night
ENE wind around 11 kt becoming N after midnight. Showers and possibly a thunderstorm. Seas 1 ft or less.
Thursday
N wind 10 to 12 kt. Showers likely, mainly before 2pm. Seas 1 ft or less.
Thursday Night
NNW wind 7 to 9 kt. A chance of showers. Seas 1 ft or less.
Friday
NNW wind 5 to 7 kt. Mostly sunny. Seas 1 ft or less.

*Notices:

  1. 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.
  2. 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.
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ABOUT THIS FORECAST

Point Forecast: 40.91°N 73.39°W
Last Update: 5:44 am EDT Jul 27, 2026
Forecast Valid: 9am EDT Jul 27, 2026-6pm EDT Aug 2, 2026
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