January in Porirua averages a daily high of 21.7°C with nights around 14.4°C. Expect roughly 8.2 wet days totalling 53.3mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Porirua is December–March.
Based on WELLINGTON AERO AWS, NZ (22.6km), 1995–2024. 19 years of January data.