The "Red Centre" and Western Australian deserts are among the driest places on Earth. Some areas receive less than 150mm of rain per year.
Northern Australia (Darwin, Cairns, Broome) has a . Forget four seasons—here, you have two: the Wet and the Dry.
The average annual rainfall across the entire Australian continent is approximately per year.
Over 80% of the continent receives less than 600 mm of rain annually, and 50% receives less than 300 mm. what is the average rainfall in australia
Northern Australia experiences a "wet season" (October–April) driven by monsoons, while southern regions typically see more rain during the cooler winter months (April–November). Wettest vs. Driest Locations
The "Millennium Drought" (1996–2010) and the catastrophic "Black Summer" bushfires of 2019-2020 demonstrated the volatility of a drying continent. Yet, recent La Niña events have brought record-breaking floods to the east coast. This paradox—wet in some places, historically dry in others—further erodes the utility of a continental average.
In these central deserts—spanning the Great Victoria, Gibson, and Simpson deserts—rainfall is not a seasonal guarantee but a sporadic event. Years can pass without significant precipitation. When rain does fall, it often arrives in torrential bursts that the bone-dry soil cannot absorb, leading to flash floods that surge through normally empty creek beds. In this context, an "average" rainfall figure is a statistical lie; there is no "normal" year in the Red Centre, only years of drought and rare years of flood. The "Red Centre" and Western Australian deserts are
But unless you live in a tropical rainforest or a temperate coastal city, that number feels wildly optimistic.
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Winter rainfall in the southwest of Western Australia has declined by about 20% since the 1970s. This poses major challenges for agriculture and urban water security, leading to the construction of massive desalination plants in cities like Perth and Sydney. Why It Matters Forget four seasons—here, you have two: the Wet
When you picture Australia, what comes to mind? Sun-scorched Outback, red dirt, kangaroos kicking up dust, and endless blue skies. You’re not wrong—but you’re also not seeing the whole picture.
Australia isn’t one country for rainfall – it’s about ten, all trying to share a single weather map.