May in Guelma averages a daily high of 27.5°C with nights around 11.4°C. Expect roughly 7.6 wet days totalling 39.3mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Guelma is March–May.
Based on GUELMA, AG (3.7km), 1995–2024. 15 years of May data.