April in Omsk averages a daily high of 10.2°C with nights around -0.1°C. Expect roughly 8.8 wet days totalling 26.2mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Omsk is May–September.
Based on OMSK, RS (2.9km), 1995–2024. 25 years of April data.