December in Split averages a daily high of 12°C with nights around 7.5°C. Expect roughly 11.5 wet days totalling 103.2mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Split is May–June.
Based on SPLIT MARJAN, HR (1km), 1995–2024. 29 years of December data.