December in Edinburgh averages a daily high of 7.6°C with nights around 1.4°C. Expect roughly 17 wet days totalling 68.8mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Edinburgh is June–September.
Based on EDINBURGH ROYAL BOTANIC GARDE, UK (1.8km), 1995–2024. 29 years of December data.