Averages Average temperature & rainfall Season Max. Temp. Min. Temp. Average Rainfall Summer 30°C 15°C 127 mm Autumn 23°C 9°C 128 mm Winter 14°C 3°C 134 mm Spring 22°C 5°C 140 mm  Climate Averages by Month. Month Max. Temp. Min. Temp. Average Rainfall January 31°C 15°C 49 mm February 30°C 16°C 36 mm March 27°C 13°C 41 mm April 22°C 8°C 43 mm May 17°C 5°C 45 mm June 13°C 3°C 42 mm July 12°C 2°C 47 mm August 14°C 3°C 45 mm September 18°C 4°C 41 mm October 22°C 7°C 54 mm November 25°C 10°C 45 mm December 29°C 13°C 41 mm