September in Catania averages a daily high of 30.6°C with nights around 17.4°C. Expect roughly 6.2 wet days totalling 44.8mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Catania is April–May.
Based on SIGONELLA, IT (17km), 1995–2024. 26 years of September data.