April in Lviv averages a daily high of 14°C with nights around 3.7°C. Expect roughly 12.2 wet days totalling 61.6mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Lviv is May–September.
Based on LVIV, UP (5.8km), 1995–2024. 17 years of April data.