May in Karlstad averages a daily high of 16.1°C with nights around 5.4°C. Expect roughly 5 wet days totalling 61.8mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Karlstad is June–August.
Based on KARLSTAD, SW (3.9km), 1995–2024. 26 years of May data.