Winnipeg weather in September
September in Winnipeg: nice, a little rain, with clean air — an excellent time to visit.
#4 of 12 months in Winnipeg · #432 of 897 destinations to visit in September · comfort 84/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Winnipeg in September
No notes yet. Open Winnipeg on the map to add the first one.
Winnipeg climate normals — September
| Daytime high | 21°C / 69°F | 😎 nice |
|---|---|---|
| Nighttime low | 11°C / 52°F | |
| Rainfall | 72 mm / 2.8 in | 🌦 some rain |
| Rainy days | 9 days | |
| Humidity | 68% | 💧 humid |
| Dew point | 10°C / 49°F | |
| Sunshine | 9.1 h/day | |
| Daylight | 12.6 h | |
| Wind | 23 km/h / 14 mph | |
| Air quality (US AQI) | 42 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Winnipeg?
Loading map…
Winnipeg in September — FAQ
- Is September a good time to visit Winnipeg?
- September in Winnipeg: nice, a little rain, with clean air — an excellent time to visit. It ranks #4 of 12 months for Winnipeg on SeasonMap's comfort score (84/100).
- What is the weather like in Winnipeg in September?
- In September, Winnipeg averages a daily high of 20.7°C and a low of 11.3°C, with about 71.9 mm of rain over roughly 8.6 rainy days.
- What is the air quality in Winnipeg in September?
- Winnipeg has a mean US Air Quality Index of about 42 in September.