January in Södertälje averages a daily high of 0.7°C with nights around -4.3°C. Expect roughly 14.4 wet days totalling 48.4mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Södertälje is June–September.
Based on SODERTALJE, SW (0.7km), 1995–2024. 30 years of January data.