The best months to visit China are April and October. See monthly temperatures, rainfall and rain days (1991–2020 averages) to plan your trip.
Average daytime high and monthly rainfall in China: January 2°C / 3mm; February 6°C / 5mm; March 13°C / 9mm; April 22°C / 19mm; May 28°C / 35mm; June 32°C / 75mm; July 32°C / 165mm; August 30°C / 126mm; September 26°C / 56mm; October 19°C / 34mm; November 10°C / 15mm; December 3°C / 4mm.