October in Turku averages a daily high of 9.7°C with nights around 3.7°C. Expect roughly 14.7 wet days totalling 73.2mm. 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 October data.