August in Cincinnati averages a daily high of 30.1°C with nights around 17.7°C. Expect roughly 9.4 wet days totalling 82.3mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Cincinnati is September–October.
Based on CINCINNATI MUNICIPAL AIRPORT LUNKEN FIELD, OH US (8.8km), 1995–2024. 29 years of August data.