May in Mölndal averages a daily high of 17°C with nights around 8.3°C. Expect roughly 11.6 wet days totalling 58.8mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Mölndal is June–August.
Based on GOTEBORG A, SW (6.8km), 1995–2024. 28 years of May data.