January in Västerås averages a daily high of 0°C with nights around -4.9°C. Expect roughly 12.6 wet days totalling 42.9mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Västerås is June–September.
Based on VASTERAS HASSLO, SW (5.2km), 1995–2024. 27 years of January data.