In December, Newcastle typically sees daytime highs of 27.1°C and overnight lows around 14.1°C. Compared to the annual average high of 24.2°C, December runs +2.9°C.
December in Newcastle averages a daytime high of 27.1°C and an overnight low of 14.1°C.
December runs +2.9°C compared to Newcastle's annual average high of 24.2°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 27.1°C and cooler evenings around 14.1°C.