May in Rostov-on-Don averages a daily high of 22.7°C with nights around 14°C. Expect roughly 8.7 wet days totalling 43.4mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Rostov-on-Don is May–June.
Based on TAGANROG LIGHTHOUSE, RS (57.3km), 1995–2024. 25 years of May data.