August in Porirua averages a daily high of 13.3°C. Expect roughly 15.1 wet days totalling 104.8mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Porirua is December–March.
Based on WELLINGTON AERO AWS, NZ (22.6km), 1995–2024. 17 years of August data.