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Hazardous Weather Conditions

For More Weather Information:

New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]

    • Overnight

      Overnight:SW wind 10 to 12 kt. Partly cloudy. Seas 1 ft or less.

      SW 12kt
      < 1ft

    • Wednesday

      Wednesday:SW wind 9 to 13 kt. A chance of showers and thunderstorms between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Seas 1 ft or less.

      SW 13kt
      < 1ft

    • Wednesday Night

      Wednesday Night:NW wind 7 to 9 kt becoming N after midnight. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers. Seas 1 ft or less.

      N 9kt
      < 1ft

    • Thursday

      Thursday:N wind 5 to 10 kt becoming E in the afternoon. A chance of showers before 2pm. Seas 1 ft or less.

      N 10kt
      < 1ft

    • Thursday Night

      Thursday Night:Variable winds 5 kt or less. Mostly cloudy. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Friday

      Friday:ENE wind around 10 kt becoming ESE in the afternoon. A chance of showers after 2pm. Seas 1 ft or less.

      ESE 10kt
      < 1ft

    • Friday Night

      Friday Night:SE wind around 6 kt. Showers likely, mainly after 2am. Seas 1 ft or less.

      SE 6kt
      < 1ft

    • Saturday

      Saturday:E wind 10 to 14 kt. Showers. Seas 1 ft or less.

      E 14kt
      < 1ft

    • Saturday Night

      Saturday Night:E wind around 13 kt, with gusts as high as 20 kt. Showers. Seas 1 ft or less.

      E 13kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:23 pm EDT May 19, 2026
Forecast Valid: 11pm EDT May 19, 2026-6pm EDT May 26, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON...

Overnight
SW wind 10 to 12 kt. Partly cloudy. Seas 1 ft or less.
Wednesday
SW wind 9 to 13 kt. A chance of showers and thunderstorms between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Seas 1 ft or less.
Wednesday Night
NW wind 7 to 9 kt becoming N after midnight. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers. Seas 1 ft or less.
Thursday
N wind 5 to 10 kt becoming E in the afternoon. A chance of showers before 2pm. Seas 1 ft or less.
Thursday Night
Variable winds 5 kt or less. Mostly cloudy. Seas 1 ft or less.
Friday
ENE wind around 10 kt becoming ESE in the afternoon. A chance of showers after 2pm. Seas 1 ft or less.
Friday Night
SE wind around 6 kt. Showers likely, mainly after 2am. Seas 1 ft or less.
Saturday
E wind 10 to 14 kt. Showers. Seas 1 ft or less.
Saturday Night
E wind around 13 kt, with gusts as high as 20 kt. Showers. 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: 40.62°N 73.59°W
Last Update: 2:23 pm EDT May 19, 2026
Forecast Valid: 11pm EDT May 19, 2026-6pm EDT May 26, 2026
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