What is the coldest month in Adelaide?

July.

Summer in Adelaide usually lasts from December to February. During this time, the temperature is very high, reaching a maximum of over 40 degrees Celsius, and the sun is shining brightly. Winter, however, is a completely different story, with the coldest month being July. July is winter in Adelaide and one of the coldest months in the city. In July, the weather turns cold and rainy, with temperatures around ten degrees Celsius. Evening temperatures are usually cooler, below freezing.