September in Borås averages a daily high of 16.8°C with nights around 8.6°C. Expect roughly 13.8 wet days totalling 94.9mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Borås is June–August.
Based on BORAS, SW (4.4km), 1995–2024. 30 years of September data.