December in Rostov-on-Don averages a daily high of 2.1°C with nights around -2.6°C. Expect roughly 12.8 wet days totalling 57.1mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Rostov-on-Don is May–June.
Based on TAGANROG LIGHTHOUSE, RS (57.3km), 1995–2024. 26 years of December data.