July in Leverkusen averages a daily high of 25°C with nights around 15.5°C. Expect roughly 14.3 wet days totalling 84.4mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Leverkusen is May–September.
Based on KOLN STAMMHEIM, GM (4.4km), 1995–2024. 29 years of July data.