May in Sandnes averages a daily high of 13.8°C with nights around 7°C. Expect roughly 13.1 wet days totalling 61.2mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Sandnes is June–September.
Based on SOLA, NO (6.7km), 1995–2024. 30 years of May data.