Australian climate stable since 2012Dataset shows no warming for 13 years and seven months Comparing the first and second halves of the time period from July 2012 to January 2026, Australia's mean temperature anomalies have cooled by 0.073C according to the Australian Climate Observation Reference Network (ACORN 2.6) for land stations (Bureau of Meteorology data source). Average maximum temperatures anomalies in Australia's south-east quarter have cooled by about half a degree over that time period (data). The University of Alabama Huntsville satellite dataset for Australian lower troposphere anomalies (UAH 6.1) shows mean temperature warming of 0.260C when comparing the first and second halves of the period from July 2012 to January 2026 (with significant warming over Australia since 2021 as a result of UAH methodology being changed in November 2024). In a different timeframe from January 2013 to January 2026, ACORN also shows mean temperature cooling of 0.069C and UAH shows Australian lower troposphere warming of 0.220C when averaging the first and second halves of this time period. The ACORN dataset shows significant land surface warming since June 2023 and the UAH dataset shows significant warming of the lower troposphere since July 2023 - both potentially affected by the emergence of an El Nino in the Pacific Ocean, strong solar activity and abnormally high atmospheric moisture content due to the Hunga Tonga underwater volcanic eruption in December 2021. Comparing 2012/13-2018/19 with 2019/20-2024/25, ACORN data show the trends are seasonal. Averaged mean temperature anomalies in Australia's cool months of April-October warmed slightly (+0.08C) and the hot months of October-April cooled significantly (-0.21C). Australia's climate became more moderate during these 12 years. The charts below are updated each month to track anomaly trends produced by the ACORN and UAH datasets.
The chart below tracks anomaly trends within ACORN 2.5 maximum temperatures.
The chart below tracks anomaly trends within ACORN 2.5 minimum temperatures.
It is worth noting the ACORN 2.5 mean, minimum and maximum temperature anomaly averages in Australia's seven state and territory jurisdictions: NSW/ACT mean : Jul 2012-Mar 2019 - 1.391C / Apr 2019-Jan 2026 - 1.044C (-0.347C) NSW/ACT minimum : Jul 2012-Mar 2019 - 1.096C / Apr 2019-Jan 2026 - 0.916C (-0.179C) NSW/ACT maximum : Jul 2012-Mar 2019 - 1.682C / Apr 2019-Jan 2026 - 1.167C (-0.515C) Northern Territory : Jul 2012-Mar 2019 - 0.906C / Apr 2019-Jan 2026 - 0.862C (-0.044C) Northern Territory minimum : Jul 2012-Mar 2019 - 0.651C / Apr 2019-Jan 2026 - 0.785C (+0.135C) Northern Territory maximum : Jul 2012-Mar 2019 - 1.155C / Apr 2019-Jan 2026 - 0.933C (-0.222C) Queensland : Jul 2012-Mar 2019 - 1.340C / Apr 2019-Jan 2026 - 1.183C (-0.156C) Queensland minimum : Jul 2012-Mar 2019 - 1.290C / Apr 2019-Jan 2026 - 1.285C (-0.005C) Queensland maximum : Jul 2012-Mar 2019 - 1.387C / Apr 2019-Jan 2026 - 1.077C (-0.310C) South Australia : Jul 2012-Mar 2019 - 1.230C / Apr 2019-Jan 2026 - 0.984C (-0.246C) South Australia minimum : Jul 2012-Mar 2019 - 0.865C / Apr 2019-Jan 2026 - 0.690C (-0.176C) South Australia maximum : Jul 2012-Mar 2019 - 1.587C / Apr 2019-Jan 2026 - 1.270C (-0.317C) Tasmania : Jul 2012-Mar 2019 - 0.615C / Apr 2019-Jan 2026 - 0.467C (-0.148C) Tasmania minimum : Jul 2012-Mar 2019 - 0.493C / Apr 2019-Jan 2026 - 0.387C (-0.106C) Tasmania maximum : Jul 2012-Mar 2019 - 0.731C / Apr 2019-Jan 2026 - 0.541C (-0.190C) Victoria : Jul 2012-Mar 2019 - 1.032C / Apr 2019-Jan 2026 - 0.686C (-0.346C) Victoria minimum : Jul 2012-Mar 2019 - 0.844C / Apr 2019-Jan 2026 - 0.653C (-0.192C) Victoria maximum : Jul 2012-Mar 2019 - 1.214C / Apr 2019-Jan 2026 - 0.711C (-0.503C) Western Australia : Jul 2012-Mar 2019 - 0.916C / Apr 2019-Jan 2026 - 1.069C (+0.153C) Western Australia minimum : Jul 2012-Mar 2019 - 0.558C / Apr 2019-Jan 2026 - 0.709C (+0.151C) Western Australia maximum : Jul 2012-Mar 2019 - 1.267C / Apr 2019-Jan 2026 - 1.424C (+0.157C) The cumulative mean temperature average of these jurisdictional anomalies equals -0.162C when comparing Jul 2012-Mar 2019 with Apr 2019-Jan 2026, mean temperature warming only apparent in Western Australia. The cumulative minimum temperature average of these jurisdictional anomalies equals -0.053C when comparing Jul 2012-Mar 2019 with Apr 2019-Jan 2026. The cumulative maximum temperature average of these jurisdictional anomalies equals -0.271C when comparing Jul 2012-Mar 2019 with Apr 2019-Jan 2026. The chart below tracks monthly anomaly trends within the US National Oceanic and Atmospheric Administration mean temperatures (1910-2000 mean baseline) for the Oceania region (comprising Australia, Papua New Guinea, New Zealand, Fiji, Solomon Islands, Federated States Of Micronesia, Vanuatu, Samoa, Kiribati, Tonga, Marshall Islands, Palau, Tuvalu and Nauru).
The trends above from different datasets are worth monitoring as most Australian public policy is hostile to fossil fuels and targetted at renewable energy but is based on the inaccurate premise that Australia's climate is warming rapidly, according to the official ACORN 2.5 monthly temperature anomalies published by the Bureau of Meteorology. Note : ACORN and UAH data above are updated usually on the third or fourth day of each month, while NOAA anomalies for Oceania are usually updated in the middle of each month.
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