January in Darmstadt averages a daily high of 4.7°C with nights around -1.1°C. Expect roughly 14.6 wet days totalling 52.9mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Darmstadt is May–September.
Based on DARMSTADT, GM (2.2km), 1995–2024. 29 years of January data.