In January, Sydney typically sees daytime highs of -1.3°C and overnight lows around -8.2°C. Compared to the annual average high of 9.8°C, January runs -11.1°C.
January in Sydney averages a daytime high of -1.3°C and an overnight low of -8.2°C.
January runs -11.1°C compared to Sydney's annual average high of 9.8°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near -1.3°C and cooler evenings around -8.2°C.