May in Jyväskylä averages a daily high of 15.2°C with nights around 3°C. Expect roughly 11.5 wet days totalling 45.5mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Jyväskylä is June–August.
Based on JYVASKYLA LENTOASEMA, FI (18km), 1995–2024. 30 years of May data.