June in Kotlas averages a daily high of 21°C with nights around 9°C. Expect roughly 13.1 wet days totalling 63.4mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Kotlas is June–August.
Based on KOTLAS, RS (4.3km), 1995–2024. 30 years of June data.