Extreme rainfall is projected to become more intense , but the magnitude of change is uncertain  . The insured damage in New Zealand from more intense extreme rainfall under RCP8.5 is projected to increase 25% by 2080-2100 . In urban areas, extreme rainfall intensity is projected to increase pluvial flood risk . In New Zealand, 20,000 km2 of land, 675,000 people, and 411,000 buildings with a NZD$135 billion replacement value are exposed to flood risk .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report