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Current conditions at

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

Partly Cloudy

88°F

31°C

Humidity 62%
Wind Speed E 18 mph
Barometer 29.98 in
Dewpoint 73°F (23°C)
Visibility 9.00 mi
Heat Index96°F (36°C)
Last update 3 Aug 4:56 pm AST
Extended Forecast for

San Isidro PR

  • This Afternoon

    This Afternoon: Scattered showers. Mostly sunny, with a steady temperature around 89. East wind around 14 mph. Chance of precipitation is 30%.

    High: 89 °F

    Scattered
    Showers

  • Tonight

    Tonight: Scattered showers, mainly after 3am. Widespread haze before 3am. Partly cloudy, with a low around 78. East wind around 10 mph. Chance of precipitation is 30%.

    Low: 78 °F

    Scattered
    Showers

  • Tuesday

    Tuesday: Scattered showers, mainly before noon. Widespread haze after noon. Mostly sunny, with a high near 93. Heat index values as high as 105. East northeast wind 9 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    High: 93 °F

    Scattered
    Showers

  • Tuesday Night

    Tuesday Night: Scattered showers. Mostly cloudy, with a low around 77. East wind 7 to 9 mph. Chance of precipitation is 40%.

    Low: 77 °F

    Scattered
    Showers

  • Wednesday

    Wednesday: Scattered showers. Partly sunny, with a high near 93. East wind 9 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.

    High: 93 °F

    Scattered
    Showers

  • Wednesday Night

    Wednesday Night: Scattered showers. Partly cloudy, with a low around 77. East southeast wind around 10 mph. Chance of precipitation is 30%.

    Low: 77 °F

    Scattered
    Showers

  • Thursday

    Thursday: Scattered showers, mainly after noon. Mostly sunny, with a high near 93. East wind 13 to 16 mph. Chance of precipitation is 30%.

    High: 93 °F

    Mostly Sunny
    then
    Scattered
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 77. East wind 8 to 10 mph.

    Low: 77 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 93. East wind 10 to 14 mph.

    High: 93 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Scattered showers. Mostly sunny, with a steady temperature around 89. East wind around 14 mph. Chance of precipitation is 30%.
Tonight
Scattered showers, mainly after 3am. Widespread haze before 3am. Partly cloudy, with a low around 78. East wind around 10 mph. Chance of precipitation is 30%.
Tuesday
Scattered showers, mainly before noon. Widespread haze after noon. Mostly sunny, with a high near 93. Heat index values as high as 105. East northeast wind 9 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Tuesday Night
Scattered showers. Mostly cloudy, with a low around 77. East wind 7 to 9 mph. Chance of precipitation is 40%.
Wednesday
Scattered showers. Partly sunny, with a high near 93. East wind 9 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Wednesday Night
Scattered showers. Partly cloudy, with a low around 77. East southeast wind around 10 mph. Chance of precipitation is 30%.
Thursday
Scattered showers, mainly after noon. Mostly sunny, with a high near 93. East wind 13 to 16 mph. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 77. East wind 8 to 10 mph.
Friday
Mostly sunny, with a high near 93. East wind 10 to 14 mph.
Friday Night
Partly cloudy, with a low around 78.
Saturday
Mostly sunny, with a high near 94.
Saturday Night
Partly cloudy, with a low around 79.
Sunday
Scattered showers. Mostly sunny, with a high near 94. Chance of precipitation is 30%.
Sunday Night
Clear, with a low around 79.
Monday
Sunny, with a high near 94.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
San Isidro PR
 18.4°N 65.89°W (Elev. 23 ft)
Last Update:
4:09 pm AST Aug 3, 2026
Forecast Valid:
5pm AST Aug 3, 2026-6pm AST Aug 10, 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