Pluvial  and fluvial  flooding are the most costly natural disasters in Australia, averaging AUD$8.8 billion per year . In New Zealand, insured damages for the 12 costliest flood events from 2007 to 2017 exceeded NZD$472 million, of which NZD$140 million has been attributed to anthropogenic climate change . Extreme rainfall intensity in northern Australia and New Zealand has been increasing, particularly for shorter  duration and more extreme high rainfall   . Changes are also occurring in spatial and temporal patterns and seasonality .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report