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San Juan, PR Local Forecast Office

31NM ENE Charlotte Amalie VI

Marine Point Forecast

[NOTICE]
    • Wednesday

      Wednesday:E wind 18 to 21 kt, with gusts as high as 29 kt. Scattered showers before noon, then isolated showers after 3pm.   Seas around 4 ft.

      High: 85 °F

      E 21kt
      4ft

    • Wednesday Night

      Wednesday Night:E wind 19 to 21 kt, with gusts as high as 28 kt. Scattered showers, mainly between 9pm and 3am.   Seas around 4 ft.

      Low: 82 °F

      E 21kt
      4ft

    • Thursday

      Thursday:E wind 17 to 19 kt, with gusts as high as 26 kt. Isolated showers before noon.   Seas around 4 ft.

      High: 85 °F

      E 19kt
      4ft

    • Thursday Night

      Thursday Night:E wind 17 to 19 kt, with gusts as high as 26 kt. Clear. Seas around 4 ft.

      Low: 82 °F

      E 19kt
      4ft

    • Friday

      Friday:E wind 14 to 18 kt, with gusts as high as 24 kt. Sunny. Seas 3 to 4 ft.

      High: 85 °F

      E 18kt
      3-4ft

    • Friday Night

      Friday Night:E wind around 16 kt, with gusts as high as 22 kt. Mostly clear. Seas around 3 ft.

      Low: 82 °F

      E 16kt
      3ft

    • Saturday

      Saturday:ENE wind around 16 kt, with gusts as high as 22 kt. Mostly sunny. Seas around 3 ft.

      High: 85 °F

      ENE 16kt
      3ft

    • Saturday Night

      Saturday Night:E wind around 17 kt, with gusts as high as 23 kt. Partly cloudy. Seas around 3 ft.

      Low: 82 °F

      E 17kt
      3ft

    • Sunday

      Sunday:E wind around 17 kt, with gusts as high as 23 kt. Mostly sunny. Seas around 3 ft.

      High: 85 °F

      E 17kt
      3ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:31 am EDT Sep 9, 2026
Forecast Valid: 3am EDT Sep 9, 2026-6pm EDT Sep 15, 2026

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Detailed Forecast


Wednesday
E wind 18 to 21 kt, with gusts as high as 29 kt. Scattered showers before noon, then isolated showers after 3pm. Seas around 4 ft.
Wednesday Night
E wind 19 to 21 kt, with gusts as high as 28 kt. Scattered showers, mainly between 9pm and 3am. Seas around 4 ft.
Thursday
E wind 17 to 19 kt, with gusts as high as 26 kt. Isolated showers before noon. Seas around 4 ft.
Thursday Night
E wind 17 to 19 kt, with gusts as high as 26 kt. Clear. Seas around 4 ft.
Friday
E wind 14 to 18 kt, with gusts as high as 24 kt. Sunny. Seas 3 to 4 ft.
Friday Night
E wind around 16 kt, with gusts as high as 22 kt. Mostly clear. Seas around 3 ft.
Saturday
ENE wind around 16 kt, with gusts as high as 22 kt. Mostly sunny. Seas around 3 ft.
Saturday Night
E wind around 17 kt, with gusts as high as 23 kt. Partly cloudy. Seas around 3 ft.
Sunday
E wind around 17 kt, with gusts as high as 23 kt. Mostly sunny. Seas around 3 ft.

Winds and seas higher in and near thunderstorms.

*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: 18.48°N 64.4°W
Last Update: 2:31 am EDT Sep 9, 2026
Forecast Valid: 3am EDT Sep 9, 2026-6pm EDT Sep 15, 2026
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