May in Bunbury averages a daily high of 21°C with nights around 9.3°C. Expect roughly 10.7 wet days totalling 100mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Bunbury is October–April.
Based on BUNBURY, AS (3.3km), 1995–2024. 29 years of May data.