September in Hildesheim averages a daily high of 19.5°C with nights around 9.8°C. Expect roughly 11.9 wet days totalling 61.2mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Hildesheim is May–September.
Based on SALZHEMMENDORF LAUENSTEIN, GM (28.3km), 1995–2024. 12 years of September data.