January in Gummersbach averages a daily high of 4.7°C with nights around -0.3°C. Expect roughly 17.1 wet days totalling 98.7mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Gummersbach is May–September.
Based on NEUNKIRCHEN SEELSCHEID KRAWINK, GM (24.2km), 1995–2024. 30 years of January data.