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San Juan, PR Local Forecast Office

4NM NW San Juan PR

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:E wind 6 to 10 kt. Showers and possibly a thunderstorm.   Seas around 4 ft.

      Low: 80 °F

      E 10kt
      4ft

    • Tuesday

      Tuesday:Variable winds less than 5 kt becoming ENE 5 to 9 kt in the morning. Showers and possibly a thunderstorm.   Seas around 5 ft.

      High: 82 °F

      ⇑ENE 9kt
      5ft

    • Tuesday Night

      Tuesday Night:Variable winds 5 kt or less. Showers and possibly a thunderstorm before 9pm, then scattered showers and thunderstorms between 9pm and midnight, then showers likely and possibly a thunderstorm after midnight.   Seas around 4 ft.

      Low: 80 °F

      Light Wind
      4ft

    • Wednesday

      Wednesday:Variable winds less than 5 kt becoming ESE 5 to 10 kt in the morning. Showers and possibly a thunderstorm.   Seas around 4 ft.

      High: 82 °F

      ⇑ESE 10kt
      4ft

    • Wednesday Night

      Wednesday Night:ESE wind 6 to 8 kt. Showers likely, mainly before midnight.   Seas around 4 ft.

      Low: 80 °F

      ESE 8kt
      4ft

    • Thursday

      Thursday:E wind 5 to 11 kt. Scattered showers.   Seas around 4 ft.

      High: 82 °F

      E 11kt
      4ft

    • Thursday Night

      Thursday Night:ESE wind 7 to 9 kt. Scattered showers.   Seas around 4 ft.

      Low: 80 °F

      ESE 9kt
      4ft

    • Friday

      Friday:E wind 7 to 12 kt. Showers likely.   Seas around 3 ft.

      High: 82 °F

      E 12kt
      3ft

    • Friday Night

      Friday Night:ESE wind 7 to 9 kt. Showers.   Seas around 3 ft.

      Low: 80 °F

      ESE 9kt
      3ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 7:27 pm EDT Apr 13, 2026
Forecast Valid: 10pm EDT Apr 13, 2026-6pm EDT Apr 20, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT SHOULD EXERCISE CAUTION...

Tonight
E wind 6 to 10 kt. Showers and possibly a thunderstorm. Seas around 4 ft.
Tuesday
Variable winds less than 5 kt becoming ENE 5 to 9 kt in the morning. Showers and possibly a thunderstorm. Seas around 5 ft.
Tuesday Night
Variable winds 5 kt or less. Showers and possibly a thunderstorm before 9pm, then scattered showers and thunderstorms between 9pm and midnight, then showers likely and possibly a thunderstorm after midnight. Seas around 4 ft.
Wednesday
Variable winds less than 5 kt becoming ESE 5 to 10 kt in the morning. Showers and possibly a thunderstorm. Seas around 4 ft.
Wednesday Night
ESE wind 6 to 8 kt. Showers likely, mainly before midnight. Seas around 4 ft.
Thursday
E wind 5 to 11 kt. Scattered showers. Seas around 4 ft.
Thursday Night
ESE wind 7 to 9 kt. Scattered showers. Seas around 4 ft.
Friday
E wind 7 to 12 kt. Showers likely. Seas around 3 ft.
Friday Night
ESE wind 7 to 9 kt. Showers. 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: 18.46°N 66.13°W
Last Update: 7:27 pm EDT Apr 13, 2026
Forecast Valid: 10pm EDT Apr 13, 2026-6pm EDT Apr 20, 2026
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