August in Winnipeg averages a daily high of 25.4°C with nights around 15°C. Expect roughly 9.2 wet days totalling 69.9mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Winnipeg is June–September.
Based on WINNIPEG THE FORKS, MB CA (1km), 1995–2024. 24 years of August data.