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San Juan, PR Local Forecast Office

3NM NW San Juan PR

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:Variable winds 5 kt or less. Showers likely and possibly a thunderstorm before 5pm, then scattered showers and thunderstorms after 5pm.   Seas around 3 ft.

      High: 84 °F

      Light Wind
      3ft

    • Tonight

      Tonight:Variable winds 5 kt or less. Scattered showers before 11pm, then isolated showers after 2am.   Seas 2 to 3 ft.

      Low: 82 °F

      Light Wind
      2-3ft

    • Thursday

      Thursday:Variable winds 5 kt or less. Isolated showers, then showers likely and possibly a thunderstorm after 11am.   Seas around 2 ft.

      High: 84 °F

      Light Wind
      2ft

    • Thursday Night

      Thursday Night:Variable winds 5 kt or less. Scattered showers, mainly before 2am.   Seas around 2 ft.

      Low: 82 °F

      Light Wind
      2ft

    • Friday

      Friday:Variable winds 5 kt or less. Isolated showers, then showers likely and possibly a thunderstorm after 11am.   Seas 2 to 3 ft.

      High: 84 °F

      Light Wind
      2-3ft

    • Friday Night

      Friday Night:Variable winds 5 kt or less. Isolated showers.   Seas around 3 ft.

      Low: 82 °F

      Light Wind
      3ft

    • Saturday

      Saturday:Variable winds less than 5 kt becoming WNW around 6 kt. Showers likely, mainly after 11am.   Seas 3 to 4 ft.

      High: 84 °F

      ⇑WNW 6kt
      3-4ft

    • Saturday Night

      Saturday Night:Variable winds 5 kt or less. Partly cloudy. Seas around 4 ft.

      Low: 82 °F

      Light Wind
      4ft

    • Sunday

      Sunday:Variable winds 5 kt or less. Showers likely.   Seas 4 to 5 ft.

      High: 84 °F

      Light Wind
      4-5ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 12:56 pm EST Nov 4, 2026
Forecast Valid: 2pm EST Nov 4, 2026-6pm EST Nov 10, 2026

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Detailed Forecast


This Afternoon
Variable winds 5 kt or less. Showers likely and possibly a thunderstorm before 5pm, then scattered showers and thunderstorms after 5pm. Seas around 3 ft.
Tonight
Variable winds 5 kt or less. Scattered showers before 11pm, then isolated showers after 2am. Seas 2 to 3 ft.
Thursday
Variable winds 5 kt or less. Isolated showers, then showers likely and possibly a thunderstorm after 11am. Seas around 2 ft.
Thursday Night
Variable winds 5 kt or less. Scattered showers, mainly before 2am. Seas around 2 ft.
Friday
Variable winds 5 kt or less. Isolated showers, then showers likely and possibly a thunderstorm after 11am. Seas 2 to 3 ft.
Friday Night
Variable winds 5 kt or less. Isolated showers. Seas around 3 ft.
Saturday
Variable winds less than 5 kt becoming WNW around 6 kt. Showers likely, mainly after 11am. Seas 3 to 4 ft.
Saturday Night
Variable winds 5 kt or less. Partly cloudy. Seas around 4 ft.
Sunday
Variable winds 5 kt or less. Showers likely. Seas 4 to 5 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: 18.45°N 66.1°W
Last Update: 12:56 pm EST Nov 4, 2026
Forecast Valid: 2pm EST Nov 4, 2026-6pm EST Nov 10, 2026
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