April in Ishim averages a daily high of 9.3°C with nights around -1.4°C. Expect roughly 8.3 wet days totalling 21.5mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Ishim is May–August.
Based on ISCHIM AMSG, RS (3.8km), 1995–2024. 25 years of April data.