May in Tarragona averages a daily high of 23.4°C with nights around 12.5°C. Expect roughly 6 wet days totalling 40.5mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Tarragona is March–July.
Based on REUS AEROPUERTO, SP (6.5km), 1995–2024. 30 years of May data.