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

Climate & Weather

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

  • Drought indicator charts

  • NZ's warmest and wettest winter on record

    Media release
    NIWA’s climate scientists can now confirm what you may have suspected. After carefully poring through more than a century’s worth of data, it has been officially determined that winter 2022 was Aotearoa New Zealand’s warmest and wettest on record.
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    Map Alpine

    Education Resource
    Mountainous areas are subject to heavy snowfalls, high winds, and low temperatures. Semi-permanent snow and ice fields exist at about 1000-1100 metres during winter.
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    West Coast

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    How do we determine past climate?

    Information about past climate is obtained from piecing evidence together from various sources.
  • Southland

    Southland is both the most southerly and most westerly part of New Zealand and generally is the first to be influenced by weather systems moving onto the country from the west or south.
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    Map C North

    Education Resource
    As this region is sheltered by high country to the south and east, it has less wind than many other parts of New Zealand.
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    Canterbury

  • Tropical Cyclone Hamish

    Southwest Pacific Tropical Cyclone Outlook

    Publication series
    A summary of up-coming tropical cyclone seasons, issued 6-monthly.
  • Regional modelling of New Zealand climate

    Research Project
    Developing probabilistic scenarios of expected future regional climate changes.
  • Average soil moisture deficit onset and termination maps

    Maps of the average first and last dates of soil moisture deficit are shown here.
  • Shifting Sands – the end of a Kiwi dream

    Feature story
    The Kiwi dream of owning a beachfront property with panoramic views of the ocean is under threat—and not just for financial reasons.