I have created an interactive chart of the highest maximum recorded temperature for each year across all stations in the Australian Bureau of Meteorology Australian Climate Observations Reference Network – Surface Air Temperature (ACORN-SAT) station network.

The dataset employs the peer-reviewed and published data analysis techniques and takes advantage of 100 years of digitised observational data to provide a daily record of Australian temperatures since 1910.

The data is comparable through time, making adjustments for historic changes in observing practices and observing locations, which enable climates researchers to better understand long-term changes in monthly and seasonal climate, as well as changes in day-to-day weather, such as the frequency of heat and cold extremes.


(Note to visitors viewing this page on their mobile phone, you will only see a non-interactive image of the chart. Please visit this page again from your desktop computer to enable full interactivity)


  • The two hottest maximum temperatures ever recorded across the ACORN-SAT network were at Carnarvon on the 23 January, 1953 (51°C) and at Oodnadatta on the 2nd January, 1960 (51.1°C).
  • The eight hottest maximum temperatures ever recorded were prior to 1980.
  • The 42 ‘coolest’ hottest maximum temperatures recorded were prior to 2000. Data homogenisation effect?
  • The average of the recorded temperatures was 47.7°C prior to 2000, and 48.3°C from 2000-present. Data homogenisation effect?
  • Marble Bar is perhaps the hottest place in Australia with it taking the hottest annual maximum temperature in 29 out of 110 years of records. Port Hedland second with 18 years, then Carnarvon and Birdsville equal third with 13 years each.
  • There is no evidence of a trend of increasing hottest annual maximum temperatures.
  • There appears to be a step change in the ‘coolest’ highest annual maximum temperature records.

Desktop users, play around with the interactive chart below. I have written a post here on how to use the interactive functions of the charts.

Let me know your observations in the comments below or follow Climate Alarmism on Twitter to join the conversation there.

Fun Fact

Congratulations to Oodnadatta, which has both the hottest and ‘coolest’ maximum recorded temperatures at 51.1°C and 45.9°C respectively.