April in Turku averages a daily high of 9.5°C with nights around 0.2°C. Expect roughly 9.5 wet days totalling 31.7mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Turku is June–August.
Based on TURKU ARTUKAINEN, FI (4.8km), 1995–2024. 22 years of April data.