December in Tarragona averages a daily high of 15.3°C with nights around 4.6°C. Expect roughly 5.2 wet days totalling 33.4mm. 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 December data.