A report by former fire commissioners and the Climate Council warns that around 6.9 million Australians living on the outer edges of major cities are increasingly exposed to the risk of bushfires spreading into urban areas. The warning draws parallels with last year’s deadly fires in Los Angeles, which claimed 31 lives. According to the report, climate change is intensifying dangerous fire conditions by extending fire seasons and driving sharp swings between heavy rainfall and drought, leaving large volumes of vegetation ready to burn. Cities including Sydney, Melbourne, Canberra and Perth are identified as being particularly vulnerable.
Sydney’s Urban Fringe At Risk
Across Sydney’s outer suburbs, homes sit right up against bushland that stretches deep into the Blue Mountains and the Royal National Park. During the Black Summer fires, flames came uncomfortably close. Emergency services now warn that the next major fire could push directly into suburbs like Penrith, Hornsby and Sutherland.
The landscape itself adds to the danger. Steep hills and narrow valleys can whip up powerful winds, driving fires faster and further. Climate change is worsening the threat by drying out vegetation sooner and stretching fire seasons longer. After wet years, thick growth is left behind, only to turn into fuel when dry conditions return. With tightly packed homes lining the bush, embers can fly kilometres ahead of a blaze. Firefighters say city-based crews are not prepared for fires of this scale, while insurance premiums climb and evacuation routes risk gridlock when residents try to flee.
Melbourne And Canberra are Highly Exposed
On Melbourne’s outskirts, suburbs near the Dandenong Ranges and Warrandyte sit beside dense eucalypt forests that can funnel dangerous fires toward the city during extreme weather. Canberra faces a similar threat. Surrounded by the Namadgi National Park and the Cotter catchment, the capital learned the cost of that exposure in 2003, when bushfires destroyed about 500 homes.
The risk echoes patterns seen in Los Angeles, where housing has steadily pushed into grasslands and forests. Wet years spur heavy growth, then drought dries it into fuel. When strong winds arrive, fires can race through grass and into nearby bush within minutes. Fire services say they are already operating at their limits during major emergencies, while hospitals, power networks and evacuation plans remain vulnerable. Officials warn that gaps in community preparedness could make future fires even more destructive.
Adelaide, Perth, Mediterranean Climate Danger
From opposite sides of the country, Adelaide and Perth face a similar problem. Both have hot, dry summers and winters that deliver less rain each year, a pattern also seen in parts of Los Angeles. As winter rainfall declines, drought deepens, and fire risk rises. In Perth’s southwest, bushland presses directly against suburbs, leaving little buffer when fires start.
Even Darwin, better known for its tropical climate, is not immune. During severe dry seasons, fire danger escalates quickly. Fire authorities say the lesson is clear: every capital city now needs stronger planning for fires at the urban edge. Cutting emissions faster, investing more in disaster preparedness, and reforming fire and land management systems are no longer long-term goals, but immediate necessities.
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