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.

Fair

82°F

28°C

Humidity 79%
Wind Speed Vrbl 3 mph
Barometer 29.97 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 5 Sep 12:56 am AST
Extended Forecast for

San Juan PR

  • Overnight

    Overnight: Scattered showers, mainly before 3am. Partly cloudy, with a low around 79. East southeast wind around 6 mph. Chance of precipitation is 30%.

    Low: 79 °F

    Scattered
    Showers

  • Saturday

    Saturday: Scattered showers, mainly after noon. Mostly sunny, with a high near 92. Heat index values as high as 109. East wind 7 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

    High: 92 °F

    Scattered
    Showers

  • Saturday Night

    Saturday Night: Isolated showers. Partly cloudy, with a low around 80. East southeast wind 6 to 8 mph. Chance of precipitation is 20%.

    Low: 80 °F

    Isolated
    Showers

  • Sunday

    Sunday: Isolated showers, then showers likely and possibly a thunderstorm after noon. Increasing clouds, with a high near 93. Heat index values as high as 110. East wind 7 to 16 mph. Chance of precipitation is 70%.

    High: 93 °F

    Isolated
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Scattered showers. Mostly cloudy, with a low around 80. Southeast wind 6 to 8 mph. Chance of precipitation is 40%.

    Low: 80 °F

    Scattered
    Showers

  • Labor Day

    Labor Day: Showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 94. East wind 7 to 17 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.

    High: 94 °F

    Sunny then
    Showers
    Likely

  • Monday Night

    Monday Night: Partly cloudy, with a low around 81. East southeast wind around 9 mph.

    Low: 81 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Scattered showers. Partly sunny, with a high near 91. East wind 10 to 16 mph. Chance of precipitation is 50%.

    High: 91 °F

    Scattered
    Showers

  • Tuesday Night

    Tuesday Night: Scattered showers. Partly cloudy, with a low around 81. East southeast wind around 10 mph. Chance of precipitation is 30%.

    Low: 81 °F

    Scattered
    Showers

Detailed Forecast

Overnight
Scattered showers, mainly before 3am. Partly cloudy, with a low around 79. East southeast wind around 6 mph. Chance of precipitation is 30%.
Saturday
Scattered showers, mainly after noon. Mostly sunny, with a high near 92. Heat index values as high as 109. East wind 7 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Saturday Night
Isolated showers. Partly cloudy, with a low around 80. East southeast wind 6 to 8 mph. Chance of precipitation is 20%.
Sunday
Isolated showers, then showers likely and possibly a thunderstorm after noon. Increasing clouds, with a high near 93. Heat index values as high as 110. East wind 7 to 16 mph. Chance of precipitation is 70%.
Sunday Night
Scattered showers. Mostly cloudy, with a low around 80. Southeast wind 6 to 8 mph. Chance of precipitation is 40%.
Labor Day
Showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 94. East wind 7 to 17 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Monday Night
Partly cloudy, with a low around 81. East southeast wind around 9 mph.
Tuesday
Scattered showers. Partly sunny, with a high near 91. East wind 10 to 16 mph. Chance of precipitation is 50%.
Tuesday Night
Scattered showers. Partly cloudy, with a low around 81. East southeast wind around 10 mph. Chance of precipitation is 30%.
Wednesday
Scattered showers. Mostly cloudy, with a high near 93. Chance of precipitation is 50%.
Wednesday Night
Scattered showers. Partly cloudy, with a low around 81. Chance of precipitation is 30%.
Thursday
Scattered showers. Mostly sunny, with a high near 90. Chance of precipitation is 40%.
Thursday Night
Partly cloudy, with a low around 80.
Friday
Sunny, with a high near 93.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
San Juan PR
 18.41°N 66.08°W (Elev. 16 ft)
Last Update:
8:55 pm AST Sep 4, 2026
Forecast Valid:
1am AST Sep 5, 2026-6pm AST Sep 11, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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