May in Ballarat averages a daily high of 14.1°C with nights around 5.2°C. Expect roughly 12.7 wet days totalling 50.1mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Ballarat is November–March.
Based on BALLARAT AERODROME, AS (7.9km), 1995–2024. 30 years of May data.