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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 10 mph
Barometer 30.00 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 17 Oct 8:56 am AST
Extended Forecast for

San Antonio PR

  • Today

    Today: Scattered showers, then showers likely and possibly a thunderstorm after 3pm. Increasing clouds, with a high near 90. East northeast wind 9 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

    Isolated
    Showers then
    Showers
    Likely

  • Tonight

    Tonight: Isolated showers. Mostly clear, with a low around 76. East southeast wind 5 to 9 mph becoming light south southeast after midnight. Chance of precipitation is 20%.

    Low: 76 °F

    Isolated
    Showers

  • Sunday

    Sunday: Isolated showers before 9am, then scattered showers after noon. Mostly sunny, with a high near 90. East northeast wind 5 to 13 mph. Chance of precipitation is 30%.

    High: 90 °F

    Scattered
    Showers

  • Sunday Night

    Sunday Night: Isolated showers. Mostly clear, with a low around 76. Southeast wind 3 to 7 mph. Chance of precipitation is 20%.

    Low: 76 °F

    Isolated
    Showers

  • Monday

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

    High: 90 °F

    Scattered
    Showers

  • Monday Night

    Monday Night: Scattered showers. Partly cloudy, with a low around 76. Southeast wind 3 to 6 mph. Chance of precipitation is 30%.

    Low: 76 °F

    Scattered
    Showers

  • Tuesday

    Tuesday: Showers likely, mainly after noon. Partly sunny, with a high near 90. East wind 5 to 13 mph. Chance of precipitation is 60%.

    High: 90 °F

    Scattered
    Showers then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 75. South southeast wind 3 to 5 mph.

    Low: 75 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Showers likely, mainly after noon. Partly sunny, with a high near 91. Light and variable wind becoming east northeast 8 to 13 mph in the morning. Chance of precipitation is 60%.

    High: 91 °F

    Scattered
    Showers then
    Showers
    Likely

Detailed Forecast

Today
Scattered showers, then showers likely and possibly a thunderstorm after 3pm. Increasing clouds, with a high near 90. East northeast wind 9 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.
Tonight
Isolated showers. Mostly clear, with a low around 76. East southeast wind 5 to 9 mph becoming light south southeast after midnight. Chance of precipitation is 20%.
Sunday
Isolated showers before 9am, then scattered showers after noon. Mostly sunny, with a high near 90. East northeast wind 5 to 13 mph. Chance of precipitation is 30%.
Sunday Night
Isolated showers. Mostly clear, with a low around 76. Southeast wind 3 to 7 mph. Chance of precipitation is 20%.
Monday
Scattered showers. Mostly sunny, with a high near 90. Light east southeast wind becoming east northeast 8 to 13 mph in the morning. Chance of precipitation is 40%.
Monday Night
Scattered showers. Partly cloudy, with a low around 76. Southeast wind 3 to 6 mph. Chance of precipitation is 30%.
Tuesday
Showers likely, mainly after noon. Partly sunny, with a high near 90. East wind 5 to 13 mph. Chance of precipitation is 60%.
Tuesday Night
Partly cloudy, with a low around 75. South southeast wind 3 to 5 mph.
Wednesday
Showers likely, mainly after noon. Partly sunny, with a high near 91. Light and variable wind becoming east northeast 8 to 13 mph in the morning. Chance of precipitation is 60%.
Wednesday Night
Scattered showers. Partly cloudy, with a low around 76. Chance of precipitation is 30%.
Thursday
Scattered showers. Mostly sunny, with a high near 91. Chance of precipitation is 50%.
Thursday Night
Partly cloudy, with a low around 77.
Friday
Showers likely. Mostly cloudy, with a high near 92. Chance of precipitation is 70%.
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ABOUT THIS FORECAST

 
Point Forecast:
San Antonio PR
 18.45°N 66.28°W (Elev. 43 ft)
Last Update:
4:37 am AST Oct 17, 2026
Forecast Valid:
9am AST Oct 17, 2026-6pm AST Oct 23, 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