January in Mostar averages a daily high of 9.7°C with nights around 2.4°C. Expect roughly 12.1 wet days totalling 168.4mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Mostar is April–May.
Based on MOSTAR, BK (1km), 1995–2024. 18 years of January data.