Guelma's climate is characterized by mild winters and hot summers. In winter, temperatures range from -1°C in February to 25°C in January, with an average around 14°C. As spring approaches, temperatures gradually rise, reaching up to 32°C in April and averaging 16°C. Summer months bring scorching heat, with temperatures often soaring above 40°C between June and August. Autumn brings relief from the summer heat, with temperatures dropping back down to averages around 15-19°C by November.