April in Oldenburg averages a daily high of 14°C with nights around 4.1°C. Expect roughly 11.9 wet days totalling 46.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Oldenburg is May–September.
Based on FRIESOYTHE EDEWECHTERDAM, GM (19km), 1995–2024. 23 years of April data.