August in Pierrefonds averages a daily high of 25.5°C with nights around 14.7°C. Expect roughly 9.1 wet days totalling 81.9mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Pierrefonds is May–September.
Based on STE ANNE DE BELLEVUE 1, QC CA (4.3km), 1995–2024. 24 years of August data.