There are only a small handful of stations in Australia with good long term daily temperature records. One is at the Richmond, Queensland Post Office.
That station shows no January/February warming since the 19th century.
Summer temperatures there closely correlate with ENSO cycles. The 2009 La Nina was the coolest Jan/Feb on record there. Subsequent El Nino years have been hot.
I noticed that some of their heatwaves correlate with US heatwaves – in particular 1901, 1913, the 1930s and 1994/1995 – which had extremely hot weather in much of the western US.
What does it mean? I have no idea, other than the fact that climate scientists seem to have no understanding or interest in doing any actual science. Instead of changing or hiding the data – why not try to understand it?