April in Rostock averages a daily high of 12.1°C with nights around 5.1°C. Expect roughly 9.9 wet days totalling 33.7mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Rostock is June–September.
Based on ROSTOCK WARNEMUNDE, GM (11km), 1995–2024. 30 years of April data.