Climate and weather

Understanding how storms produce different floods across Northland.

This study examines the atmospheric drivers of extreme storms in Northland.

This report presents a post-event hydrological analysis of the severe rainfall that affected eastern Northland between 18 and 22 January 2026.

This report assesses how climate change is likely to affect Northland’s freshwater ecosystems and values.

Reports summarising the key preliminary outcomes of research projects on drought monitoring and prediction systems.

A summary report on the impacts and implications of climate change for Northland.

A report on possible changes to Northland's climate over the coming century (Author: NIWA)

A report on climatic elements and weather systems affecting Northland (Author: NIWA)

This report examines Northland’s drought history, severity and climate drivers using rainfall data from across the region.