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New York, NY Local Forecast Office

15NM WSW Islip NY

Marine Point Forecast

[NOTICE]

    • Today

      Today:NW wind around 7 kt. A slight chance of showers, then scattered showers and thunderstorms after 2pm. Seas 1 ft or less.

      NW 7kt
      < 1ft

    • Tonight

      Tonight:ENE wind 6 to 8 kt. Scattered showers before 8pm. Seas 1 ft or less.

      ENE 8kt
      < 1ft

    • Saturday

      Saturday:ENE wind 6 to 9 kt becoming ESE in the afternoon. Partly sunny. Seas 1 ft or less.

      ESE 9kt
      < 1ft

    • Saturday Night

      Saturday Night:SE wind 6 to 8 kt. A chance of showers after 2am. Seas 1 ft or less.

      SE 8kt
      < 1ft

    • Sunday

      Sunday:SSE wind 8 to 13 kt becoming NW in the afternoon. Showers likely before 11am, then showers likely and possibly a thunderstorm between 11am and 2pm, then showers after 2pm. Seas 1 ft or less.

      NW 13kt
      < 1ft

    • Sunday Night

      Sunday Night:NW wind around 12 kt. Showers before 8pm. Seas 1 ft or less.

      NW 12kt
      < 1ft

    • Monday

      Monday:WNW wind around 12 kt. Mostly sunny. Seas 1 ft or less.

      WNW 12kt
      < 1ft

    • Monday Night

      Monday Night:NNW wind around 10 kt. Partly cloudy. Seas 1 ft or less.

      NNW 10kt
      < 1ft

    • Tuesday

      Tuesday:N wind 6 to 9 kt becoming SSW in the afternoon. Sunny. Seas 1 ft or less.

      SSW 9kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:22 am EDT Apr 17, 2026
Forecast Valid: 9am EDT Apr 17, 2026-6pm EDT Apr 23, 2026

View Nearby Observations

Detailed Forecast


Today
NW wind around 7 kt. A slight chance of showers, then scattered showers and thunderstorms after 2pm. Seas 1 ft or less.
Tonight
ENE wind 6 to 8 kt. Scattered showers before 8pm. Seas 1 ft or less.
Saturday
ENE wind 6 to 9 kt becoming ESE in the afternoon. Partly sunny. Seas 1 ft or less.
Saturday Night
SE wind 6 to 8 kt. A chance of showers after 2am. Seas 1 ft or less.
Sunday
SSE wind 8 to 13 kt becoming NW in the afternoon. Showers likely before 11am, then showers likely and possibly a thunderstorm between 11am and 2pm, then showers after 2pm. Seas 1 ft or less.
Sunday Night
NW wind around 12 kt. Showers before 8pm. Seas 1 ft or less.
Monday
WNW wind around 12 kt. Mostly sunny. Seas 1 ft or less.
Monday Night
NNW wind around 10 kt. Partly cloudy. Seas 1 ft or less.
Tuesday
N wind 6 to 9 kt becoming SSW in the afternoon. Sunny. Seas 1 ft or less.

Winds and waves 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: 40.61°N 73.51°W
Last Update: 2:22 am EDT Apr 17, 2026
Forecast Valid: 9am EDT Apr 17, 2026-6pm EDT Apr 23, 2026
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