May in Siirt averages a daily high of 26.3°C with nights around 14.8°C. Expect roughly 10.6 wet days totalling 49.3mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Siirt is April–May.
Based on SIIRT, TU (1.6km), 1995–2024. 13 years of May data.