April in Weimar averages a daily high of 14°C with nights around 4.3°C. Expect roughly 10.5 wet days totalling 34mm. 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. 17 years of April data.