If you're looking for summer vibes, the best time to travel to Chengdu is in July, August and May, when the average temperature reaches 27.98 °C, while May, April and March are the 3 sunniest months of the year, with an average of 62.62 hours.
However, if you prefer colder temperatures, make sure you visit Chengdu during January, December or February to experience an average of 10 °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 January, February and March, when the average precipitation in Chengdu is 3.63 mm, while the months of January, February and March are drier, with an average of 0 mm.