September weather in Ottawa, Canada
Averages from 150 days in September across 2020–2024.
Typical conditions
| Average high | 21.3°C |
|---|---|
| Average low | 12.6°C |
| Average mean | 16.6°C |
| Total precipitation | 396.7 mm |
| Rainy days | 65 |
| Average precipitation hours | 2.9 h |
| Average max wind speed | 14.3 km/h |
| Average sunshine | 9.5 h/day |
Explore other months
January February March April May June July August September October November December