August in Kiel averages a daily high of 22.4°C with nights around 13.2°C. Expect roughly 13.3 wet days totalling 73.4mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Kiel is June–September.
Based on KIEL HOLTENAU, GM (6.1km), 1995–2024. 24 years of August data.