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May in Oakville averages a daily high of 16.8°C with nights around 9°C. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Oakville is June–September.
Based on BURLINGTON PIERS AUT, ON CA (19.2km), 1995–2024. 25 years of May data.
See all twelve months for Oakville →