September in Toronto averages a daily high of 22.6°C with nights around 14.1°C. Expect roughly 8.8 wet days totalling 62.9mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Toronto is June–September.
Based on TORONTO CITY, ON CA (4.4km), 1995–2024. 22 years of September data.