September in Eskilstuna averages a daily high of 17.1°C with nights around 7°C. Expect roughly 9.5 wet days totalling 41.5mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Eskilstuna is June–September.
Based on ESKILSTUNA MO, SW (3.6km), 1995–2024. 27 years of September data.