May in Dundee averages a daily high of 15.4°C with nights around 6.5°C. Expect roughly 13.7 wet days totalling 55.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Dundee is June–September.
Based on MYLNEFIELD, UK (6.2km), 1995–2024. 24 years of May data.