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.

  • Production of Hayward kiwifruit in Bay of Plenty at risk from climate change

    Media release
    The most commonly grown variety of kiwifruit around Te Puke will not be commercially viable in the area by the end of the century, say scientists.
  • Tiny air bubbles reveal new information about greenhouse gas emissions

    Media release
    Sitting at the surface of Taylor Glacier in Antarctica, are layers of ice more than 10,000 years old. And trapped inside those layers are bubbles of ancient air – like tiny time capsules - able to tell scientists a story about what the world used to be like and how humans have changed it.
  • Wellington will get significantly warmer, new climate change report shows

    Media release
    Wellington city will have warmer autumns, almost a month of days over 25°C and up to 10 per cent more winter rain by 2090, according to a new NIWA climate report.
  • Climate change and variability - report for the Greater Wellington Region

  • Climate change will cause more deaths from air pollution, study finds

    Media release
    New research estimates that if climate change goes unchecked 60,000 more people will die globally from air pollution in 2030 – just 13 years away.
  • So far, so stormy

    Media release
    Today’s low came spinning off the coast of Hawke’s Bay funneling strong winds through the Cook Strait and hitting Wellington region with strong winds before moving on to Taranaki and Auckland this afternoon.
  • Tropical Cyclone Hamish

    Southwest Pacific Tropical Cyclone Outlook

    Publication series
    A summary of up-coming tropical cyclone seasons, issued 6-monthly.
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    Mean number of days of ground frost

    These datasets are available in a range of formats.
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    Virtual Climate Station data and products

    Virtual climate station estimates are produced every day, based on the spatial interpolation of actual data observations made at climate stations located around the country.
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    Hotspot Watch Updates

    This weekly update helps assess likelihood of extremely dry weather preceding a drought.
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    Investigating ocean acidification

    Feature story
    The world’s oceans are acidifying as a result of the carbon dioxide (CO2) generated by humanity.
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    Map Chatham

    Education Resource
    Extremes of temperature are rare as the Chatham Islands are small land masses surrounded by sea.