Climate & Weather

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

  • Annual

    Publication series
    Annual Climate Summaries from 2000 to present.
  • Bay of Plenty

    The topography of the North Island has a profound effect on the weather of the Bay of Plenty region.
  • What is Ocean acidification?

    NIWA oceanographer Dr Cliff Law explains the impacts of ocean acidification on organisms that use carbonates to build their shells, and on bacteria.
  • Understanding and predicting floods and their impacts

    Feature story
    Floods are not unusual in New Zealand, but those that hit us early this winter broke records. Why did they occur? Should we expect more? Can we predict future floods?
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    Mean daily maximum temperatures (°C)

    These datasets are available in a range of formats.
  • Lauder Atmospheric Research Station

    UVI forecast for Specific Sites

    Check out UV index forecasts for locations in New Zealand (including ski fields), Australia, the Pacific and Antarctica.
  • Takahe Valley monitoring station

    Monthly

    Publication series
    Monthly climate summaries from December 2001 to the present.
  • Gisborne

    In comparison with regions exposed to the west, Gisborne experiences a greater number of weather and climatic extremes.
  • Southwest Pacific climate

    Our southwest Pacific research focuses on recent and historic climate and weather activity, including our involvement in ACRE Pacific data rescue.
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    Mean monthly temperatures (°C)

    These datasets are available in a range of formats.
  • UV Atlas

    More information about NIWA's UV Atlas
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    How deep is the snow at your place?

    Measurements of snowfall at low elevations around New Zealand are few and far between, and yet the data would be really helpful in understanding how snowfall occurs and quantifying snow-related risks.