In December, Wellington typically sees daytime highs of 23.7°C and overnight lows around 14.4°C. Compared to the annual average high of 27.7°C, December runs -4.0°C.
December in Wellington averages a daytime high of 23.7°C and an overnight low of 14.4°C.
December runs -4.0°C compared to Wellington's annual average high of 27.7°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 23.7°C and cooler evenings around 14.4°C.