January in Aalen averages a daily high of 3.2°C with nights around -2.9°C. Expect roughly 15.3 wet days totalling 70.6mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Aalen is May–September.
Based on ELLWANGEN RINDELBACH, GM (17.2km), 1995–2024. 30 years of January data.