There are far fewer people at the climates for a northern winter south of the equator. Sydney winter for example is around 10C, and rarely drops to 5C. Joburg'

There are far fewer people at the climates for a northern winter south of the equator. Sydney winter for example is around 10C, and rarely drops to 5C. Joburg's winter mean is about 10C. Compare that with London, New York and Beijing.