June in Banja Luka averages a daily high of 28°C with nights around 15°C. Expect roughly 11.6 wet days totalling 83.5mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Banja Luka is April–June.
Based on BANJA LUKA, BK (1km), 1995–2024. 13 years of June data.