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.

A Few Clouds

82°F

28°C

Humidity 82%
Wind Speed SE 5 mph
Barometer 29.99 in (1015.3 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 29 Aug 12:56 am AST
Extended Forecast for

San Juan PR

  • Overnight

    Overnight: Scattered showers. Partly cloudy, with a low around 81. East wind around 9 mph. Chance of precipitation is 30%.

    Low: 81 °F

    Scattered
    Showers

  • Saturday

    Saturday: Scattered showers, mainly before 9am. Mostly sunny, with a high near 93. Heat index values as high as 107. East wind 11 to 17 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.

    High: 93 °F

    Scattered
    Showers

  • Saturday Night

    Saturday Night: Scattered showers before midnight, then scattered showers and thunderstorms between midnight and 3am, then scattered showers after 3am. Partly cloudy, with a low around 82. East wind around 11 mph. Chance of precipitation is 40%.

    Low: 82 °F

    Scattered
    Showers

  • Sunday

    Sunday: Scattered showers and thunderstorms, then showers and possibly a thunderstorm after 9am. High near 92. Heat index values as high as 105. East northeast wind around 14 mph. Chance of precipitation is 80%.

    High: 92 °F

    Showers

  • Sunday Night

    Sunday Night: Scattered showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 80. Southeast wind 6 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    Low: 80 °F

    Showers
    Likely

  • Monday

    Monday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 90. East southeast wind 7 to 14 mph. Chance of precipitation is 70%.

    High: 90 °F

    Showers
    Likely

  • Monday Night

    Monday Night: Scattered showers. Partly cloudy, with a low around 80. East southeast wind around 7 mph. Chance of precipitation is 30%.

    Low: 80 °F

    Scattered
    Showers

  • Tuesday

    Tuesday: Scattered showers. Mostly cloudy, with a high near 90. East wind 9 to 13 mph. Chance of precipitation is 50%.

    High: 90 °F

    Scattered
    Showers

  • Tuesday Night

    Tuesday Night: Scattered showers. Mostly cloudy, with a low around 79. East southeast wind 6 to 8 mph. Chance of precipitation is 50%.

    Low: 79 °F

    Scattered
    Showers

Detailed Forecast

Overnight
Scattered showers. Partly cloudy, with a low around 81. East wind around 9 mph. Chance of precipitation is 30%.
Saturday
Scattered showers, mainly before 9am. Mostly sunny, with a high near 93. Heat index values as high as 107. East wind 11 to 17 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.
Saturday Night
Scattered showers before midnight, then scattered showers and thunderstorms between midnight and 3am, then scattered showers after 3am. Partly cloudy, with a low around 82. East wind around 11 mph. Chance of precipitation is 40%.
Sunday
Scattered showers and thunderstorms, then showers and possibly a thunderstorm after 9am. High near 92. Heat index values as high as 105. East northeast wind around 14 mph. Chance of precipitation is 80%.
Sunday Night
Scattered showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 80. Southeast wind 6 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Monday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 90. East southeast wind 7 to 14 mph. Chance of precipitation is 70%.
Monday Night
Scattered showers. Partly cloudy, with a low around 80. East southeast wind around 7 mph. Chance of precipitation is 30%.
Tuesday
Scattered showers. Mostly cloudy, with a high near 90. East wind 9 to 13 mph. Chance of precipitation is 50%.
Tuesday Night
Scattered showers. Mostly cloudy, with a low around 79. East southeast wind 6 to 8 mph. Chance of precipitation is 50%.
Wednesday
Scattered showers. Partly sunny, with a high near 93. Chance of precipitation is 50%.
Wednesday Night
Partly cloudy, with a low around 80.
Thursday
Scattered showers. Mostly sunny, with a high near 92. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 80.
Friday
Scattered showers. Mostly sunny, with a high near 92. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
San Juan PR
 18.42°N 66.07°W (Elev. 26 ft)
Last Update:
3:48 pm AST Aug 28, 2026
Forecast Valid:
1am AST Aug 29, 2026-6pm AST Sep 4, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation