May in Orkney averages a daily high of 24.7°C with nights around 4.8°C. Expect roughly 3.6 wet days totalling 35.1mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Orkney is May–August.
Based on POTCHEFSTROOM, SF (47.8km), 1995–2024. 20 years of May data.