April in Potsdam averages a daily high of 15.6°C with nights around 4.6°C. Expect roughly 9.4 wet days totalling 28.4mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Potsdam is May–September.
Based on POTSDAM, GM (1.7km), 1995–2024. 30 years of April data.