October in Hannover averages a daily high of 14.6°C with nights around 7°C. Expect roughly 13.1 wet days totalling 56.6mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Hannover is May–September.
Based on HANNOVER, GM (11.2km), 1995–2024. 30 years of October data.