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This report summarizes the risks posed on Australia's climate, ecosystems, food and water systems, and citizens by climate impacts, as well as the country's policies for mitigation, adaptation, and emissions reductions. Australia is home to tropical, temperate, arid, and alpine climate regimes. Whereas its interior is arid and semiarid, the northern regions are dominated by tropical climate systems with monsoonal rain during the summer and a dry season for the remainder of the year. The southern regions experience winter storm activity originating in the Southern Ocean, and summer high pressure systems pushed southward by the monsoon. The country bears high risk of increased water stresses and high temperatures in the future and remains among the highest greenhouse gas emitters per capita.

The G20 Climate Risk Atlas represents a science-based tool that can support decision-making processes and the planning of required policies. The simple language, attractive features, and design is intended to ensure that the Atlas lends itself to easy consultation and dissemination, therefore opening the door, not only to decision-makers and stakeholders, but also to the general public, creating a participatory and iterative process which can be used to increase public awareness on climate issues. In the process of a sustainable transition, climate change must be considered the fundamental pillar of the political agenda. Only committed and timely mitigation and adaptation actions can limit the intensification of extreme events, the destruction of ecosystems, infrastructure and populations, and in the process enable people to benefit from a better and more equitable future.