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

Atmospheric analysis

NIWA has been using advanced scientific instruments to measure atmospheric trace gases and isotopes for over 50 years.

  • Clouds -

    UV and Ozone

    Service
    This is the home for NIWA's UV and ozone research, including maps and graphs showing daily predictions and measurements for UV levels across New Zealand.
  • 2020_12_WESTLAND_parsonsking_DSC6603-Recovered

    UV Index

    Service
    Plots of today's UV index are available in graphical form for Auckland, Wellington, Christchurch, Lauder and Invercargill.
  • About us

    Tides

    Research Project
    On this page, you can find information about tide forecasts, sea-level network, tidal model of New Zealand's EEZ, and red-alert days for coastal flooding.
  • Link between insomnia and depression found at Science & Technology Fair

    Media release
    A study looking at the impact of sleep on depression in adolescents was 18 months in the making for Ellen Thompson.
  • Views from Houghton Bay on the South Coast of Wellington in the July 2022 storm that saw 130km/h winds and seven metre swells.

    Tide Forecaster

    Service
    NIWA's Tide forecaster provides tidal data for any point in New Zealand.
  • NiwaWeather-app

    NIWA Weather

    Service
    NIWA Weather is NIWA's public facing weather forecasting website. You'll find 2-day, hour-by-hour forecasts for locations across Aotearoa New Zealand, as well as forecast videos by our in-house meteorologists, animations showing rain forecasts, tide forecasts and NIWA's daily UV index.
  • Sunrise from Brooklyn Hill

    SolarView

    This calculator estimates the solar energy that can be collected by a solar capture device (solar panel) at a given address, panel direction and roof slope.
  • Hotspot Watch 13 October 2023

    Hotspot
    A weekly update describing soil moisture patterns across the country to show where dry to extremely dry conditions are occurring or imminent.
  • Takahe Valley monitoring station

    Environmental information

    Monitoring, managing, and delivering environmental information from the sky to the sea.
  • Wild mountains over sea

    Operations Management Team

    The Operations Management Team is responsible for the operational performance and effective delivery of NIWA's science, products, and services.
  • Waitaki Canals

    Science Leadership Team

    The Science Leadership Team is responsible for identifying and leading NIWA's research strategy, stakeholder management, and the development of services, products, and market opportunities.
  • Star trails, Lauder atmospheric research station

    Executive Team

    The Executive Team is responsible for NIWA-wide strategy and performance.