June in Białystok averages a daily high of 22.6°C with nights around 10.4°C. Expect roughly 12.2 wet days totalling 63.3mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Białystok is May–September.
Based on BIALYSTOK, PL (3.7km), 1995–2024. 30 years of June data.