The East Australian Current (EAC) is Australia’s strongest current and is also changing rapidly as our planet warms. Here we synthesise the current knowledge on observed trends, extremes and their drivers in the EAC system, including the coastal consequences. The EAC and its anticyclonic eddies are moving further south, transporting more warm water poleward. As a consequence, ocean heat content is rising at two-three times the global average. Coastal and offshore warming is non-uniform with latitude associated with an increase in sea surface height and eddy activity. Coastal temperatures along southeastern Australia, have risen at among the fastest rates on earth (0.5oC/decade). At the extreme end, marine heatwaves (a major challenge facing marine ecosystems) are increasing in frequency and marine cold-spells are decreasing. In the EAC system, trends and extremes are linked to dynamical regimes. For example, in the EAC jet transport is slowing down, and marine heatwaves are driven by air sea heat fluxes, but in the EAC Southern Extension, transport is increasing and marine heatwaves are advection driven associated with eddies. Our review provides an observational and modelling framework for exploring the impacts of climate change in other western boundary current systems which are also changing rapidly