May in Niš averages a daily high of 24°C with nights around 11.3°C. Expect roughly 11.7 wet days totalling 69.2mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Niš is April–June.
Based on NIS, RI (1km), 1995–2024. 30 years of May data.