April in Vilnius averages a daily high of 12.7°C with nights around 2.4°C. Expect roughly 11.3 wet days totalling 28.2mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Vilnius is June–September.
Based on VILNIUS, LH (13.1km), 1995–2024. 20 years of April data.