If you're looking for summer vibes, the best time to travel to Sao Joao Del Rei is in January, October and February, when the average temperature reaches 29.29 °C, while August, July and September are the 3 sunniest months of the year, with an average of 114.42 hours.
However, if you prefer colder temperatures, make sure you visit Sao Joao Del Rei during August, May or June to experience an average of 9.59 °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 August, March and April, when the average precipitation in Sao Joao Del Rei is 5.08 mm, while the months of January, February and March are drier, with an average of 0 mm.