January in Hameln averages a daily high of 3.6°C with nights around -1.1°C. Expect roughly 17.6 wet days totalling 76.2mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Hameln is May–September.
Based on SALZHEMMENDORF LAUENSTEIN, GM (13.7km), 1995–2024. 12 years of January data.