The best months to visit Hong Kong are January and December. See monthly temperatures, rainfall and rain days (1991–2020 averages) to plan your trip.
Average daytime high and monthly rainfall in Hong Kong: January 20°C / 24mm; February 22°C / 34mm; March 23°C / 71mm; April 27°C / 127mm; May 27°C / 233mm; June 29°C / 332mm; July 31°C / 253mm; August 31°C / 326mm; September 30°C / 217mm; October 29°C / 70mm; November 25°C / 35mm; December 21°C / 29mm.