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.

  • Extended warmth for South Island

    Media release
    A large area of high pressure will take up residence east of New Zealand for the next few days, bringing more unusual springtime warmth to parts of the South Island from tomorrow through to late next week, says NIWA forecaster Seth Carrier.
  • NIWA's Hotspot Watch for 26 October 2017

    Hotspot
    A weekly update describing soil moisture across the country to help assess whether severely to extremely dry conditions are occurring or imminent. Across the North Island, soil moisture levels have generally not changed significantly during the past week, while across the South Island, soil moisture levels have generally decreased.
  • Southern spring sizzle sets records

    Media release
    An immense dome of high pressure stretched across the Tasman Sea onto the South Island yesterday, bringing the highest temperatures across New Zealand since April.
  • NIWA's Hotspot Watch for 19 October 2017

    Hotspot
    The first weekly update for the 2017-18 summer describing soil moisture across the country to help assess whether severely to extremely dry conditions are occurring or imminent.
  • Dramatic sea ice decline limits NIWA’s Antarctic research

    Media release
    A dramatic change in sea ice this year is likely to hamper a NIWA-led research project aiming to better understand how ice shelves will melt as the ocean warms.
  • Southern spring sizzle

    Media release
    An air flow extending from Australia on Thursday and Friday may bring near-record warmth to parts of the interior South Island, says NIWA forecaster Ben Noll. A large area of high pressure to the northwest of New Zealand will help steer this warm air across the Tasman Sea.
  • Southwest Pacific Tropical Cyclone Outlook update October 2017

    Media release
    Southwest Pacific Tropical Cyclone Outlook: Near-normal season expected, but with increased activity west, reduced activity east
  • Scientists mark 10th anniversary of ocean acidification research

    Media release
    A decade of scientific research into how ocean acidification is affecting New Zealand waters has led to far greater understanding of the vulnerability of our marine ecosystems, according to a newly published review.
  • Joining the flooded dots

    Feature story
    The term “joined-up government” was coined in the late 1990s to describe the coordination modern governments need to deal with large problems.
  • Breaking the ice

    Feature story
    The Deep South National Science Challenge is one of New Zealand’s most audacious collaborative projects in recent times.
  • From sea ice to sea bed

    Feature story
    Pioneering NIWA scientists are returning to the cold continent in October, this time to focus on the seabed.
  • Intensity of cyclones predicted to increase

    Feature story
    Tropical cyclones forming in the south-west Pacific are becoming less frequent but those that do form are likely to be more severe.