December in Gijón averages a daily high of 14.9°C with nights around 8.2°C. Expect roughly 14.9 wet days totalling 117.2mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Gijón is June–September.
Based on GIJON MUSEL, SP (4.1km), 1995–2024. 26 years of December data.