If you're looking for summer vibes, the best time to travel to Taiyuan is in July, August and May, when the average temperature reaches 22.24 °C, while December, January and March are the 3 sunniest months of the year, with an average of 170.82 hours.
If you prefer colder temperatures, however, make sure you visit Taiyuan during the months of January, February and December to experience an average of -3.67 °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 Taiyuan is 2.6 mm, while the months of January, February and March are drier, with an average of 0 mm.