December in Ilidža averages a daily high of 4.8°C with nights around -1.3°C. Expect roughly 13.3 wet days totalling 94.6mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Ilidža is May–October.
Based on SARAJEVO, BK (10.1km), 1995–2024. 30 years of December data.