August in Weimar averages a daily high of 24.3°C with nights around 13.7°C. Expect roughly 11.6 wet days totalling 65.8mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Weimar is May–September.
Based on WEIMAR SCHONDORF, GM (4.7km), 1995–2024. 18 years of August data.