In December, Porirua typically sees daytime highs of 17.8°C and overnight lows around 11.6°C. Compared to the annual average high of 15.6°C, December runs +2.3°C.
December in Porirua averages a daytime high of 17.8°C and an overnight low of 11.6°C.
December runs +2.3°C compared to Porirua's annual average high of 15.6°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 17.8°C and cooler evenings around 11.6°C.