[REPORT] State of the Climate 2018, Australia

by
Austrlian Buereau of Meteorology

Key points Australia

  • Australia’s climate has warmed by just over 1 °C since 1910, leading to an increase in the frequency of extreme heat events.
  • Oceans around Australia have warmed by around 1 °C since 1910, contributing to longer and more frequent marine heatwaves.
  • Sea levels are rising around Australia, increasing the risk of inundation.
  • The oceans around Australia are acidifying (the pH is decreasing).
  • April to October rainfall has decreased in the southwest of Australia. Across the same region May–July rainfall has seen the largest decrease, by around 20 per cent since 1970.
  • There has been a decline of around 11 per cent in April–October rainfall in the southeast of Australia since the late 1990s.
  • Rainfall has increased across parts of northern Australia since the 1970s.
  • Streamflow has decreased across southern Australia. Streamflow has increased in northern Australia where rainfall has increased.
  • There has been a long-term increase in extreme fire weather, and in the length of the fire season, across large parts of Australia.