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Current conditions at

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

Partly Cloudy

79°F

26°C

Humidity 88%
Wind Speed Calm
Barometer 30.02 in (1016.4 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 4 Oct 10:56 pm AST
Extended Forecast for

San Antonio PR

  • Tonight

    Tonight: Scattered showers, mainly after midnight. Mostly cloudy, with a low around 75. Southeast wind 3 to 6 mph. Chance of precipitation is 40%.

    Low: 75 °F

    Scattered
    Showers

  • Monday

    Monday: Scattered showers, mainly after noon. Partly sunny, with a high near 92. Heat index values as high as 106. Light southeast wind becoming east northeast 11 to 16 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 40%.

    High: 92 °F

    Scattered
    Showers

  • Monday Night

    Monday Night: Scattered showers, mainly before midnight. Partly cloudy, with a low around 76. South southeast wind 3 to 8 mph. Chance of precipitation is 40%.

    Low: 76 °F

    Scattered
    Showers

  • Tuesday

    Tuesday: Isolated showers after 9am. Mostly sunny, with a high near 92. Heat index values as high as 107. East northeast wind 6 to 14 mph. Chance of precipitation is 20%.

    High: 92 °F

    Isolated
    Showers

  • Tuesday Night

    Tuesday Night: Isolated showers. Partly cloudy, with a low around 77. East southeast wind 5 to 9 mph. Chance of precipitation is 20%.

    Low: 77 °F

    Isolated
    Showers

  • Wednesday

    Wednesday: Scattered showers, mainly after noon. Mostly sunny, with a high near 89. East wind 7 to 17 mph. Chance of precipitation is 40%.

    High: 89 °F

    Scattered
    Showers

  • Wednesday Night

    Wednesday Night: Scattered showers. Partly cloudy, with a low around 75. Southeast wind 6 to 10 mph. Chance of precipitation is 30%.

    Low: 75 °F

    Scattered
    Showers

  • Thursday

    Thursday: Scattered showers. Partly sunny, with a high near 92. East wind 7 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.

    High: 92 °F

    Scattered
    Showers

  • Thursday Night

    Thursday Night: Scattered showers. Partly cloudy, with a low around 76. East southeast wind 6 to 9 mph. Chance of precipitation is 30%.

    Low: 76 °F

    Scattered
    Showers

Detailed Forecast

Tonight
Scattered showers, mainly after midnight. Mostly cloudy, with a low around 75. Southeast wind 3 to 6 mph. Chance of precipitation is 40%.
Monday
Scattered showers, mainly after noon. Partly sunny, with a high near 92. Heat index values as high as 106. Light southeast wind becoming east northeast 11 to 16 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 40%.
Monday Night
Scattered showers, mainly before midnight. Partly cloudy, with a low around 76. South southeast wind 3 to 8 mph. Chance of precipitation is 40%.
Tuesday
Isolated showers after 9am. Mostly sunny, with a high near 92. Heat index values as high as 107. East northeast wind 6 to 14 mph. Chance of precipitation is 20%.
Tuesday Night
Isolated showers. Partly cloudy, with a low around 77. East southeast wind 5 to 9 mph. Chance of precipitation is 20%.
Wednesday
Scattered showers, mainly after noon. Mostly sunny, with a high near 89. East wind 7 to 17 mph. Chance of precipitation is 40%.
Wednesday Night
Scattered showers. Partly cloudy, with a low around 75. Southeast wind 6 to 10 mph. Chance of precipitation is 30%.
Thursday
Scattered showers. Partly sunny, with a high near 92. East wind 7 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Thursday Night
Scattered showers. Partly cloudy, with a low around 76. East southeast wind 6 to 9 mph. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 92.
Friday Night
Partly cloudy, with a low around 75.
Saturday
Mostly sunny, with a high near 90.
Saturday Night
Clear, with a low around 76.
Sunday
Sunny, with a high near 91.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
San Antonio PR
 18.45°N 66.31°W (Elev. 151 ft)
Last Update:
9:19 pm AST Oct 4, 2026
Forecast Valid:
11pm AST Oct 4, 2026-6pm AST Oct 11, 2026
 
Forecast Discussion
 
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Additional Resources

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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