January in Roskilde averages a daily high of 3.2°C with nights around 0.3°C. Expect roughly 13.4 wet days totalling 35.8mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Roskilde is June–September.
Based on FALSTERBO, SW (54.9km), 1995–2024. 30 years of January data.