March in Kouvola averages a daily high of 1.6°C with nights around -6.4°C. Expect roughly 11.4 wet days totalling 38.5mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Kouvola is May–August.
Based on KOUVOLA UTTI LENTOPORTINTIE, FI (13.5km), 1995–2024. 30 years of March data.