January in Siirt averages a daily high of 7.6°C with nights around 0.7°C. Expect roughly 14.5 wet days totalling 114.8mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Siirt is April–May.
Based on SIIRT, TU (1.6km), 1995–2024. 10 years of January data.