September in Poole averages a daily high of 18.9°C with nights around 12.3°C. Expect roughly 10.5 wet days totalling 66.1mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Poole is June–September.
Based on SWANAGE, UK (11.3km), 1995–2024. 29 years of September data.