If you're looking for summer vibes, the best time to travel to Shanghai is in July, August and June, when the average temperature reaches 28.82 °C, while April, December and May are the 3 sunniest months of the year, with an average of 125.33 hours.
However, if you prefer colder temperatures, make sure you visit Shanghai during January, February or December to experience an average of 8.84 °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 April, when the average precipitation in Shanghai is 7.5 mm, while the months of January, February and March are drier, with an average of 0 mm.