May in Pierrefonds averages a daily high of 19.3°C with nights around 7.9°C. Expect roughly 10.5 wet days totalling 68.3mm. 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. 28 years of May data.