May in Achinsk averages a daily high of 16.8°C with nights around 5.3°C. Expect roughly 11.9 wet days totalling 41.1mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Achinsk is June–August.
Based on ACHINSK, RS (1.3km), 1995–2024. 30 years of May data.