July in Weimar averages a daily high of 24.5°C with nights around 13.6°C. Expect roughly 13.3 wet days totalling 79.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Weimar is May–September.
Based on WEIMAR SCHONDORF, GM (4.7km), 1995–2024. 18 years of July data.