September in Dorsten averages a daily high of 20.5°C with nights around 9.8°C. Expect roughly 11.8 wet days totalling 71mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Dorsten is May–September.
Based on BORKEN IN WESTFALEN, GM (24.2km), 1995–2024. 21 years of September data.