In September, Porirua typically sees daytime highs of 13.3°C and overnight lows around 7.4°C. Compared to the annual average high of 15.6°C, September runs -2.3°C.
September in Porirua averages a daytime high of 13.3°C and an overnight low of 7.4°C.
September runs -2.3°C compared to Porirua's annual average high of 15.6°C, ranking #9 of 12 months by warmth.
Plan for daytime highs near 13.3°C and cooler evenings around 7.4°C.