The best months to visit Czechia are September and May. See monthly temperatures, rainfall and rain days (1991–2020 averages) to plan your trip.
Average daytime high and monthly rainfall in Czechia: January 3°C / 37mm; February 9°C / 33mm; March 11°C / 43mm; April 15°C / 38mm; May 19°C / 67mm; June 23°C / 77mm; July 24°C / 82mm; August 26°C / 73mm; September 20°C / 57mm; October 14°C / 44mm; November 7°C / 40mm; December 4°C / 41mm.