September in Neumünster averages a daily high of 19.1°C with nights around 9.9°C. Expect roughly 12.8 wet days totalling 65mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Neumünster is May–September.
Based on WITTENBORN, GM (23.4km), 1995–2024. 30 years of September data.