October in Hämeenlinna averages a daily high of 8.3°C with nights around 2.5°C. Expect roughly 14.6 wet days totalling 64.1mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Hämeenlinna is June–August.
Based on HAMEENLINNA KATINEN, FI (1.7km), 1995–2024. 22 years of October data.