May in Caltanissetta averages a daily high of 20.4°C with nights around 12.8°C. Expect roughly 5.8 wet days totalling 27mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Caltanissetta is May–September.
Based on ENNA, IT (21.3km), 1995–2024. 18 years of May data.