Winters in Sousse are mild, with temperatures ranging from around freezing to the mid-20s Celsius. Spring is a pleasant time, with temperatures gradually warming up to average highs of 21-26°C by May and June. Summer months bring intense heat, with temperatures often soaring above 40°C, especially in July and August. Autumn sees temperatures cool down again, returning to more comfortable levels around 17-21°C by November and December.