May in Žilina averages a daily high of 17.3°C with nights around 4.5°C. Expect roughly 16.8 wet days totalling 114.8mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Žilina is June–August.
Based on ORAVSKA LESNA, LO (34.9km), 1995–2024. 26 years of May data.