January in Guelma averages a daily high of 16.6°C with nights around 4.6°C. Expect roughly 10.2 wet days totalling 62.7mm. 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. 13 years of January data.