August in Roskilde averages a daily high of 21.5°C with nights around 15.5°C. Expect roughly 11.6 wet days totalling 69.1mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Roskilde is June–September.
Based on FALSTERBO, SW (54.9km), 1995–2024. 30 years of August data.