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

Measured in Auckland (Leigh Marine Observatory), Paraparaumu, Christchurch, Lauder, Invercargill. Click on the thumbnail to see a larger version of each of these graphs. Time series of these UV data ...

Cyclone Gabrielle unleashed torrential rain and record floods across Hawke's Bay and Tairāwhiti in the second week of February. In the days that followed, river flow experts and hazard scientists ...

Cyclone Pam’s furious flight path across the South Pacific in March this year illustrated the danger natural hazards pose to life, livelihoods and infrastructural development in the region.

Regional predictions for October – December 2024 The tables below show the probabilities (or percent chances) for each of three categories: above average, near average, and below average. In the ...

Chris Appleby and Hilary McMillan measuring river flow in Halcombe Creek, Canterbury. Predicting floods A model that is essential to understanding floods, and forecasting them, is one that simulates ...

Regional predictions for June – August 2024 The tables below show the probabilities (or percent chances) for each of three categories: above average, near average, and below average. In the absence of ...

El Niño Southern Oscillation: what is it? El Niño and La Niña are opposite phases of a naturally occurring global climate cycle known as the El Niño Southern Oscillation, or ENSO for short. ENSO ...

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 ...

We’re only halfway through the year, but new NIWA analysis shows some parts of New Zealand have already recorded more than a year’s worth of rain.

Stories of tremendous forest fires, huge storm events, and suffocating heatwaves have dominated headlines over the past few years. We instinctively feel that our weather is getting wilder. Are we ...

A blob of smoke from the Australian bushfires is continuing to circle the globe almost four months after it formed. Scientists around the world have been tracking the blob since it formed in December ...