National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

Partly Cloudy

84°F

29°C

Humidity 74%
Wind Speed E 13 mph
Barometer 30.00 in
Dewpoint 75°F (24°C)
Visibility 9.00 mi
Heat Index92°F (33°C)
Last update 17 Aug 6:56 pm AST
Extended Forecast for

Brenas PR

  • Tonight

    Tonight: Isolated showers between midnight and 3am. Mostly clear, with a low around 77. East southeast wind 6 to 11 mph. Chance of precipitation is 20%.

    Low: 77 °F

    Clear then
    Isolated
    Showers

  • Tuesday

    Tuesday: Scattered showers, mainly after 3pm. Increasing clouds, with a high near 90. Heat index values as high as 108. East northeast wind 5 to 10 mph increasing to 16 to 21 mph in the afternoon. Chance of precipitation is 40%.

    High: 90 °F

    Sunny then
    Scattered
    Showers

  • Tuesday Night

    Tuesday Night: Isolated showers after 9pm. Partly cloudy, with a low around 77. East wind 8 to 14 mph. Chance of precipitation is 20%.

    Low: 77 °F

    Isolated
    Showers

  • Wednesday

    Wednesday: Scattered showers, mainly before noon. Mostly sunny, with a high near 90. Heat index values as high as 108. East southeast wind 7 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    High: 90 °F

    Scattered
    Showers

  • Wednesday Night

    Wednesday Night: Scattered showers. Mostly cloudy, with a low around 77. East southeast wind 6 to 8 mph. Chance of precipitation is 40%.

    Low: 77 °F

    Scattered
    Showers

  • Thursday

    Thursday: Isolated showers after noon. Mostly sunny, with a high near 91. East wind 9 to 18 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    High: 91 °F

    Sunny then
    Isolated
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 78. East southeast wind 8 to 13 mph.

    Low: 78 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 90. East northeast wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon.

    High: 90 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 78. East wind 11 to 14 mph.

    Low: 78 °F

    Partly Cloudy

Detailed Forecast

Tonight
Isolated showers between midnight and 3am. Mostly clear, with a low around 77. East southeast wind 6 to 11 mph. Chance of precipitation is 20%.
Tuesday
Scattered showers, mainly after 3pm. Increasing clouds, with a high near 90. Heat index values as high as 108. East northeast wind 5 to 10 mph increasing to 16 to 21 mph in the afternoon. Chance of precipitation is 40%.
Tuesday Night
Isolated showers after 9pm. Partly cloudy, with a low around 77. East wind 8 to 14 mph. Chance of precipitation is 20%.
Wednesday
Scattered showers, mainly before noon. Mostly sunny, with a high near 90. Heat index values as high as 108. East southeast wind 7 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Wednesday Night
Scattered showers. Mostly cloudy, with a low around 77. East southeast wind 6 to 8 mph. Chance of precipitation is 40%.
Thursday
Isolated showers after noon. Mostly sunny, with a high near 91. East wind 9 to 18 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Thursday Night
Mostly clear, with a low around 78. East southeast wind 8 to 13 mph.
Friday
Mostly sunny, with a high near 90. East northeast wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 78. East wind 11 to 14 mph.
Saturday
Sunny, with a high near 90.
Saturday Night
Mostly clear, with a low around 78.
Sunday
Mostly sunny, with a high near 90.
Sunday Night
Mostly clear, with a low around 78.
Monday
Mostly sunny, with a high near 90.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Brenas PR
 18.47°N 66.33°W (Elev. 23 ft)
Last Update:
3:46 pm AST Aug 17, 2026
Forecast Valid:
7pm AST Aug 17, 2026-6pm AST Aug 24, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation