With a population of around 4,300, Castro Barros sits in La Rioja, Argentina. The city operates in the America/Argentina/La Rioja time zone.
In 2025, Castro Barros averaged an annual temperature of 71°F, with hottest temperatures reaching 111°F in February and lowest around 31°F in June. The city received approximately 16 inches of precipitation during the year.
View historical weather for Castro Barros · More cities in La Rioja