May in Manukau City averages a daily high of 18°C. Expect roughly 18.7 wet days totalling 130.4mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Manukau City is November–March.
Based on AUCKLAND AERO AWS, NZ (7.1km), 1995–2024. 21 years of May data.