So much for the "Man-Made" CO2's
It's the Good Old Sun ...
From your ABC...From a simple energy perspective, the winter solstice therefore has the least amount of incoming heat directly from sunlight.
However, for nearly the whole of Australia, the coldest weather does not arrive when the days are shortest.
For the vast majority of the country, the coldest month is July, and for some locations, the coldest day on average is not until early August, even though days are longer and the Sun's angle is higher.
The cause of the temporal anomaly between the shortest day and coldest temperatures is due to the different heat capacities of substances.
Put simply, land regions warm up and cool down much faster than oceans.
This property is demonstrated daily as air temperatures fluctuate sharply between day and night, while water temperatures remain steady regardless of the hour.
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