May in Ålesund averages a daily high of 12°C with nights around 6.2°C. Expect roughly 15.1 wet days totalling 73.4mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Ålesund is June–September.
Based on VIGRA, NO (10.2km), 1995–2024. 30 years of May data.