March in Irkutsk averages a daily high of 1.1°C with nights around -11.4°C. Expect roughly 6.8 wet days totalling 11.7mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Irkutsk is May–August.
Based on IRKUTSK, RS (5.2km), 1995–2024. 27 years of March data.