April in Kotlas averages a daily high of 8.3°C with nights around -2.1°C. Expect roughly 10.1 wet days totalling 28.4mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Kotlas is June–August.
Based on KOTLAS, RS (4.3km), 1995–2024. 30 years of April data.