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New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]
    • Monday

      Monday:NNW wind 8 to 11 km/h becoming SSE 13 to 16 km/h in the afternoon. Mostly sunny. Seas 1 m or less.

      ⇑SSE 16km/h
      < 1m

    • Monday Night

      Monday Night:S wind 13 to 16 km/h decreasing to 10 to 13 km/h after midnight. Partly cloudy. Seas 1 m or less.

      S 16km/h⇓
      < 1m

    • Tuesday

      Tuesday:W wind 8 to 11 km/h becoming SW 13 to 16 km/h in the afternoon. Sunny. Seas 1 m or less.

      ⇑SW 16km/h
      < 1m

    • Tuesday Night

      Tuesday Night:SW wind 13 to 16 km/h becoming WNW 8 to 11 km/h in the evening. Mostly clear. Seas 1 m or less.

      SW 16km/h⇓
      < 1m

    • Wednesday

      Wednesday:NNW wind 10 to 14 km/h becoming S in the afternoon. A slight chance of showers and thunderstorms after 2pm.   Seas 1 m or less.

      SSW 14km/h
      < 1m

    • Wednesday Night

      Wednesday Night:S wind 8 to 11 km/h becoming NE in the evening. A chance of showers after 8pm.   Seas 1 m or less.

      S 11km/h
      < 1m

    • Thursday

      Thursday:NE wind 13 to 18 km/h becoming SE in the afternoon. A chance of showers and thunderstorms after 2pm.   Seas 1 m or less.

      SE 18km/h
      < 1m

    • Thursday Night

      Thursday Night:E wind 14 to 16 km/h. A chance of showers and thunderstorms.   Seas 1 m or less.

      E 16km/h
      < 1m

    • Friday

      Friday:E wind 16 to 19 km/h increasing to 20 to 23 km/h in the afternoon. A chance of showers.   Seas 1 m or less.

      ⇑E 23km/h
      < 1m


Associated Zone Forecast which includes this point

Last Update: 2:38 am EDT Jun 23, 2025
Forecast Valid: 2am EDT Jun 23, 2025-6pm EDT Jun 29, 2025

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Detailed Forecast


Monday
NNW wind 8 to 11 km/h becoming SSE 13 to 16 km/h in the afternoon. Mostly sunny. Seas 1 m or less.
Monday Night
S wind 13 to 16 km/h decreasing to 10 to 13 km/h after midnight. Partly cloudy. Seas 1 m or less.
Tuesday
W wind 8 to 11 km/h becoming SW 13 to 16 km/h in the afternoon. Sunny. Seas 1 m or less.
Tuesday Night
SW wind 13 to 16 km/h becoming WNW 8 to 11 km/h in the evening. Mostly clear. Seas 1 m or less.
Wednesday
NNW wind 10 to 14 km/h becoming S in the afternoon. A slight chance of showers and thunderstorms after 2pm. Seas 1 m or less.
Wednesday Night
S wind 8 to 11 km/h becoming NE in the evening. A chance of showers after 8pm. Seas 1 m or less.
Thursday
NE wind 13 to 18 km/h becoming SE in the afternoon. A chance of showers and thunderstorms after 2pm. Seas 1 m or less.
Thursday Night
E wind 14 to 16 km/h. A chance of showers and thunderstorms. Seas 1 m or less.
Friday
E wind 16 to 19 km/h increasing to 20 to 23 km/h in the afternoon. A chance of showers. Seas 1 m 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: 2:38 am EDT Jun 23, 2025
Forecast Valid: 2am EDT Jun 23, 2025-6pm EDT Jun 29, 2025
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