Winnipeg weather in August
August in Winnipeg: warm, a little rain, with clean air — one of the best months to visit.
#2 of 12 months in Winnipeg · #162 of 897 destinations to visit in August · comfort 90/100 (tier S)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Winnipeg in August
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Winnipeg climate normals — August
| Daytime high | 26°C / 78°F | 🌤 warm |
|---|---|---|
| Nighttime low | 16°C / 60°F | |
| Rainfall | 68 mm / 2.7 in | 🌦 some rain |
| Rainy days | 10 days | |
| Humidity | 73% | 💧 humid |
| Dew point | 15°C / 58°F | |
| Sunshine | 11.1 h/day | |
| Daylight | 14.4 h | |
| Wind | 20 km/h / 13 mph | |
| Air quality (US AQI) | 47 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Winnipeg in August — FAQ
- Is August a good time to visit Winnipeg?
- August in Winnipeg: warm, a little rain, with clean air — one of the best months to visit. It ranks #2 of 12 months for Winnipeg on SeasonMap's comfort score (90/100).
- What is the weather like in Winnipeg in August?
- In August, Winnipeg averages a daily high of 25.6°C and a low of 15.5°C, with about 68.4 mm of rain over roughly 10.2 rainy days.
- What is the air quality in Winnipeg in August?
- Winnipeg has a mean US Air Quality Index of about 47 in August.