May in Lugo averages a daily high of 19.8°C with nights around 7.5°C. Expect roughly 12.7 wet days totalling 76.6mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Lugo is June–September.
Based on LUGO ROZAS, SP (14.3km), 1995–2024. 29 years of May data.