The best months to visit Tunisia are May and April. See monthly temperatures, rainfall and rain days (1991–2020 averages) to plan your trip.
Average daytime high and monthly rainfall in Tunisia: January 15°C / 47mm; February 16°C / 49mm; March 18°C / 47mm; April 21°C / 42mm; May 25°C / 25mm; June 30°C / 11mm; July 33°C / 2mm; August 33°C / 9mm; September 29°C / 39mm; October 25°C / 47mm; November 20°C / 46mm; December 16°C / 47mm.