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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]

    • This Afternoon

      This Afternoon:Variable winds 5 kt or less. Showers and possibly a thunderstorm. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Tonight

      Tonight:ENE wind 6 to 9 kt increasing to 9 to 12 kt after midnight. Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 11pm. Seas 1 ft or less.

      ⇑ENE 12kt
      < 1ft

    • Wednesday

      Wednesday:ENE wind 8 to 11 kt. A slight chance of showers after 2pm. Seas 1 ft or less.

      ENE 11kt
      < 1ft

    • Wednesday Night

      Wednesday Night:ESE wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Showers likely and possibly a thunderstorm after 2am. Seas 1 ft or less.

      ESE 7kt⇓
      < 1ft

    • Thursday

      Thursday:SW wind 6 to 8 kt. Showers likely and possibly a thunderstorm before 2pm, then showers likely between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Seas 1 ft or less.

      SW 8kt
      < 1ft

    • Thursday Night

      Thursday Night:WSW wind around 6 kt becoming WNW after midnight. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Seas 1 ft or less.

      WSW 6kt
      < 1ft

    • Friday

      Friday:WNW wind around 7 kt. Mostly sunny. Seas 1 ft or less.

      WNW 7kt
      < 1ft

    • Friday Night

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

      NNW 7kt
      < 1ft

    • Saturday

      Saturday:NNW wind around 9 kt. Sunny. Seas 1 ft or less.

      NNW 9kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:22 pm EDT Sep 1, 2026
Forecast Valid: 3pm EDT Sep 1, 2026-6pm EDT Sep 8, 2026

View Nearby Observations

Detailed Forecast


This Afternoon
Variable winds 5 kt or less. Showers and possibly a thunderstorm. Seas 1 ft or less.
Tonight
ENE wind 6 to 9 kt increasing to 9 to 12 kt after midnight. Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 11pm. Seas 1 ft or less.
Wednesday
ENE wind 8 to 11 kt. A slight chance of showers after 2pm. Seas 1 ft or less.
Wednesday Night
ESE wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Showers likely and possibly a thunderstorm after 2am. Seas 1 ft or less.
Thursday
SW wind 6 to 8 kt. Showers likely and possibly a thunderstorm before 2pm, then showers likely between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Seas 1 ft or less.
Thursday Night
WSW wind around 6 kt becoming WNW after midnight. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Seas 1 ft or less.
Friday
WNW wind around 7 kt. Mostly sunny. Seas 1 ft or less.
Friday Night
NNW wind 5 to 7 kt. Mostly clear. Seas 1 ft or less.
Saturday
NNW wind around 9 kt. Sunny. Seas 1 ft or less.

Winds and seas may be higher in and near tstms.

*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: 2:22 pm EDT Sep 1, 2026
Forecast Valid: 3pm EDT Sep 1, 2026-6pm EDT Sep 8, 2026
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