Pressure One of the main things we have to watch to understand the weather is the presence of low and high pressure. Areas with low pressure are usually associated with bad weather. If an area has low ...

Download a shorter version of this lesson in PowerPoint or as a PDF or continue below to see the lesson in full. The climate of New Zealand is incredibly varied for a country of its size. The warm, ...

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

This research project is developing an energy-efficient, net-zero-emission process for wastewater denitrification.

Weather tells you what to wear each day, while climate tells you what types of clothes to have in your closet.

A New Zealand-led team has completed the fullest investigation to date into January’s eruption of the underwater Tongan volcano. Hunga-Tonga Hunga-Ha'apai (HT-HH) emitted the biggest atmospheric ...

NIWA’s annual end-of-summer snowline survey has revealed continued loss of snow and ice for New Zealand’s famous glaciers.

NIWA is pleased with the announcement today by the Science, Innovation and Technology Minister of the Government’s response to a recent review of New Zealand’s weather forecasting system.

Microbes - such as those living in wetlands, landfills or the digestive tracts of livestock – are behind unprecedented spikes in methane emissions.

A new study from NIWA has mapped outdoor air quality for Invercargill and Alexandra in more detail than ever before. Researchers found that outdoor air in the most polluted locations contained three ...

Overview 2024 was Aotearoa New Zealand’s 10th-warmest year on record. The 2024 nationwide average temperature calculated from NIWA’s seven station series was 13.25˚C, being 0.51˚C above the 1991-2020 ...

Cyclone Gabrielle - Hawkes Bay. NIWA's Jochen Bind surveying stop banks to assess flood water levels and stop bank breaches. The team also looked at what may have happened if the world was even hotter ...