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

Weather forecasting

NIWA's forecasting services are underpinned by experienced meteorologists and in-house proprietary modelling.

Wellington storm waves

Weather and climate forecasting services

Whether you need weather or climate information six hours, days or months out, our accurate forecasts can help you with operational requirements and decision making.

Climate and weather

  • Link to source page

    Lesson 9: Ngā Tohu o te Taiao – Māori environmental indicators

    Education Resource
    This lesson will explore the use of Māori environmental indicators [tohu] to anticipate local weather and climate conditions.
    Climate and weather
    Weather forecasting

  • Link to source page

    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.
    UV and ozone
    Weather forecasting

  • Link to source page

    Generating synthetic wind data

    Research Project
    NIWA has recently created synthetic, multi-year, 10-minute wind datasets at 15 wind farm sites across New Zealand. These will be used by the Electricity Commission to model the impact of wind farms on the national grid.
    Weather forecasting

  • Link to source page

    Tornado damage Whenuapai.

    Extreme weather - winds and tornadoes

    Education Resource
    Due to its position in the 'Roaring Forties', a belt of strong winds in the Southern Hemisphere which generally occur between the latitudes of 40 and 49 degrees, as well as its small size, New Zealand is a windy country.
    Weather forecasting
    Hazards
    Weather hazards