December in Catania averages a daily high of 17.3°C with nights around 6.2°C. Expect roughly 9.3 wet days totalling 61.5mm. 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. 25 years of December data.