On 1 July 2025, NIWA merged with GNS Science to become Earth Sciences New Zealand.

  • Working with schools

    We sponsor regional science and technology fairs around New Zealand and support learning programmes that bring science into the classroom.
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    Mean monthly wet-days

    These datasets are available in a range of formats.
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    Map I South

    Education Resource
    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.
  • Tornado damage Whenuapai.

    Extreme weather - winds and tornadoes

    Education Resource
    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.
  • QGIS

    QGIS is a free, open source, desktop mapping tool, widely used in New Zealand in government, research, commercial and NGO arenas.
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    RV Ikatere

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

    Education Resource
    Confused about El Niño, or can't tell the difference between an Anticyclone and an Isobar? Let us help.
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    'Eleven-station' series temperature data

    Research Project
    Temperature trends from 1930s to present day
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    Lake Ōmāpere and the Utakura River

    Tuna harvested from Lake Ōmāpere and Utakura River catchment have long comprised an important fishery for tangata whenua.
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    What is ocean acidification?

    Education Resource
    Ocean acidification is the name given to the lowering of pH of the oceans as a result of increasing carbon dioxide (CO2) in the atmosphere.
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    Tuna - identification

    There are several ways to tell the three New Zealand eel species apart.