December in Guelma averages a daily high of 17.4°C with nights around 6.4°C. Expect roughly 11.1 wet days totalling 68.4mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Guelma is March–May.
Based on GUELMA, AG (3.7km), 1995–2024. 16 years of December data.