May in Burnaby averages a daily high of 16.4°C with nights around 8.1°C. Expect roughly 14.6 wet days totalling 110.5mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Burnaby is July–August.
Based on BURNABY SIMON FRASER U, BC CA (3.2km), 1995–2024. 15 years of May data.