May in Sainte-Foy averages a daily high of 17.6°C with nights around 6.5°C. Expect roughly 12 wet days totalling 81.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Sainte-Foy is June–September.
Based on STE FOY U. LAVAL, QC CA (0.7km), 1995–2024. 26 years of May data.