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The interaction between extreme rainfall and storm surge can be critical in determining flood risk in the coastal zone. This paper investigates the presence of dependence between these two processes along the Australian coastline using the most extensive observational records of rainfall and storm surge events currently available. A bivariate logistic threshold-excess model was employed to conduct the dependence study. Statistically significant dependence was observed for the majority of locations that were analysed, although regional variations as well as seasonal variations of the dependence strength are also apparent. The dependence remains significant even at distances of several hundred kilometres between the tide gauge and the rainfall gauge, indicating that dependence arises largely due to synoptic scale meteorological forcings. The strength of dependence varies as a function of storm burst duration …