If you're looking for summer vibes, the best time to travel to Tarija is in August, September and October, when the average temperature reaches 32.28 °C, while August, July and June are the 3 sunniest months of the year, with an average of 114.52 hours.
However, if you prefer colder temperatures, make sure you visit Tarija during July, June or August to experience an average of 0.46 °C.
For those who don't care too much about temperatures, but want to avoid getting wet in the rain, it's important to avoid travelling during May, June and July, when the average precipitation in Tarija is 2.88 mm, while the months of January, February and March are drier, with an average of 0 mm.