The best months to visit Ukraine are April and September. See monthly temperatures, rainfall and rain days (1991–2020 averages) to plan your trip.
Average daytime high and monthly rainfall in Ukraine: January 1°C / 34mm; February 7°C / 35mm; March 9°C / 40mm; April 19°C / 45mm; May 21°C / 63mm; June 26°C / 69mm; July 30°C / 83mm; August 29°C / 52mm; September 25°C / 59mm; October 16°C / 45mm; November 6°C / 42mm; December 3°C / 44mm.