Atmospheric analysis

Grey mullet have a worldwide distribution and Aotearoa is at the southern limit of their range.

Kōaro are excellent climbers and like clear, swiftly flowing, forested streams.

Scholarships available to both Masters and undergraduate students in the fields of fisheries science and marine biology.

These climate maps are updated daily and are based on data from our National Climate Database.

We sponsor regional science and technology fairs around New Zealand and support learning programmes that bring science into the classroom.

These datasets are available in a range of formats.

The climate of this zone is largely dependent on the lie of the Southern Alps to the west, but many areas are also sheltered by high country to the south and east.

Due to its position in the 'Roaring Forties', a belt of strong winds in the Southern Hemisphere which generally occur between the latitudes of 40 and 49 degrees, as well as its small size, New Zealand is a windy country.

Sea surface temperatures in the southern Tasman Sea rose to exceptionally high levels in late 2017 and early 2018. These temperatures were far above any others previously observed at that time of year in the region, and extended west from New Zealand to Tasmania and mainland southeast Australia.

A versatile inshore vessel, RV Ikatere is equipped with high-precision multibeam and sub-bottom profiler transducers for surveying and mapping the seabed.

Confused about El Niño, or can't tell the difference between an Anticyclone and an Isobar? Let us help.

NIWA discusses, in depth, this year's most asked question—what is happening to our fresh waterways?