April in Osijek averages a daily high of 18.3°C with nights around 6.2°C. Expect roughly 10 wet days totalling 51.6mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Osijek is April–October.
Based on OSIJEK, HR (5.1km), 1995–2024. 29 years of April data.