September in Kelowna averages a daily high of 21.6°C with nights around 11.1°C. Expect roughly 8.1 wet days totalling 29.4mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Kelowna is May–September.
Based on OKANAGAN CENTRE, BC CA (18.7km), 1995–2024. 24 years of September data.