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Current conditions at

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

Partly Cloudy

77°F

25°C

Humidity 83%
Wind Speed S 5 mph
Barometer 30.01 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 11 Oct 5:56 am AST
Extended Forecast for

San Antonio PR

  • Today

    Today: Scattered showers before noon, then scattered showers and thunderstorms between noon and 3pm, then scattered showers after 3pm. Partly sunny, with a high near 90. Heat index values as high as 104. East wind 6 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.

    High: 90 °F

    Scattered
    Showers

  • Tonight

    Tonight: Isolated showers. Mostly clear, with a low around 76. Southeast wind around 8 mph. Chance of precipitation is 20%.

    Low: 76 °F

    Isolated
    Showers

  • Columbus Day

    Columbus Day: Scattered showers, then showers likely and possibly a thunderstorm after 3pm. Increasing clouds, with a high near 90. Heat index values as high as 106. East wind 7 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 90 °F

    Scattered
    Showers then
    Showers
    Likely

  • Monday Night

    Monday Night: Isolated showers. Partly cloudy, with a low around 76. East wind 5 to 9 mph becoming light after midnight. Chance of precipitation is 20%.

    Low: 76 °F

    Isolated
    Showers

  • Tuesday

    Tuesday: Scattered showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 89. East northeast wind 6 to 11 mph becoming light in the afternoon. Chance of precipitation is 70%.

    High: 89 °F

    Scattered
    Showers then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Isolated showers. Mostly clear, with a low around 77. East southeast wind 8 to 10 mph. Chance of precipitation is 10%.

    Low: 77 °F

    Isolated
    Showers

  • Wednesday

    Wednesday: Showers likely, mainly after noon. Partly sunny, with a high near 91. East northeast wind 6 to 13 mph. Chance of precipitation is 60%.

    High: 91 °F

    Mostly Sunny
    then Showers
    Likely

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 77. East southeast wind 5 to 8 mph.

    Low: 77 °F

    Partly Cloudy

  • Thursday

    Thursday: Scattered showers, mainly after noon. Mostly sunny, with a high near 90. Light east wind becoming east northeast 8 to 13 mph in the morning. Chance of precipitation is 40%.

    High: 90 °F

    Mostly Sunny
    then
    Scattered
    Showers

Detailed Forecast

Today
Scattered showers before noon, then scattered showers and thunderstorms between noon and 3pm, then scattered showers after 3pm. Partly sunny, with a high near 90. Heat index values as high as 104. East wind 6 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Tonight
Isolated showers. Mostly clear, with a low around 76. Southeast wind around 8 mph. Chance of precipitation is 20%.
Columbus Day
Scattered showers, then showers likely and possibly a thunderstorm after 3pm. Increasing clouds, with a high near 90. Heat index values as high as 106. East wind 7 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Isolated showers. Partly cloudy, with a low around 76. East wind 5 to 9 mph becoming light after midnight. Chance of precipitation is 20%.
Tuesday
Scattered showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 89. East northeast wind 6 to 11 mph becoming light in the afternoon. Chance of precipitation is 70%.
Tuesday Night
Isolated showers. Mostly clear, with a low around 77. East southeast wind 8 to 10 mph. Chance of precipitation is 10%.
Wednesday
Showers likely, mainly after noon. Partly sunny, with a high near 91. East northeast wind 6 to 13 mph. Chance of precipitation is 60%.
Wednesday Night
Partly cloudy, with a low around 77. East southeast wind 5 to 8 mph.
Thursday
Scattered showers, mainly after noon. Mostly sunny, with a high near 90. Light east wind becoming east northeast 8 to 13 mph in the morning. Chance of precipitation is 40%.
Thursday Night
Partly cloudy, with a low around 77.
Friday
Mostly sunny, with a high near 90.
Friday Night
Mostly clear, with a low around 76.
Saturday
Scattered showers. Partly sunny, with a high near 91. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
San Antonio PR
 18.45°N 66.31°W (Elev. 151 ft)
Last Update:
6:55 am AST Oct 11, 2026
Forecast Valid:
7am AST Oct 11, 2026-6pm AST Oct 17, 2026
 
Forecast Discussion
 
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Additional Resources

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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