August in Karlsruhe averages a daily high of 26.7°C with nights around 14.4°C. Expect roughly 11.1 wet days totalling 65.4mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Karlsruhe is May–September.
Based on RHEINSTETTEN, GM (6.7km), 1995–2024. 16 years of August data.