January in Cluj-Napoca averages a daily high of 1.3°C with nights around -4.9°C. Expect roughly 10.6 wet days totalling 28.6mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Cluj-Napoca is May–September.
Based on CLUJ NAPOCA, RO (3.1km), 1995–2024. 30 years of January data.