July in Niš averages a daily high of 30.9°C with nights around 16.4°C. Expect roughly 7.7 wet days totalling 50.9mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Niš is April–June.
Based on NIS, RI (1km), 1995–2024. 30 years of July data.