September in Lugano averages a daily high of 22.3°C with nights around 14.3°C. Expect roughly 9.5 wet days totalling 149.2mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Lugano is May–September.
Based on LUGANO, SZ (1.2km), 1995–2024. 29 years of September data.