View annual, seasonal and monthly summaries of temperature, rainfall and sunshine data from across New Zealand.

The graph shows carbon dioxide (CO 2) levels measured at Baring Head, NIWA’s clean air station, near Wellington. This station has been running since 1972 and is home to the longest running continuous ...

These datasets are available in a range of formats.

These datasets are available in a range of formats.

The New Zealand Freshwater Fish Database (NZFFD) contains over 50,000 freshwater fish observations from across New Zealand from 1901 to the present.

A regional climatology is a summary of the typical weather and climate of a region, based on historical data observations made at climate stations located within the region.

NIWA collects and generates as part of its Climate Station Network observational data in “10 min” format (data reported in 10 minute intervals).

Understanding our variable and changing climate is critical for managing resources and reducing risks.

This Climate Change Adaptation Toolbox helps you find out about the changing climate, what it might mean for your business, organisation or community and what you can do about it. You can assess your ...

On this page: People Species and ecosystems Economy and business Infrastructure Places New opportunities Researchers in New Zealand, and around the world, are beginning to understand the different ...

NIWA’s flagship programmes bring together experts, partners and technologies to tackle key environmental challenges and deliver solutions to help New Zealand build resilience and manage its ...

The Global Warming Potential (GWP) of a greenhouse gas is its ability to trap extra heat in the atmosphere over time relative to carbon dioxide (CO2). This is most often calculated over 100 years, and ...