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.

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    Hawkes Bay

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    Support

    We have a range of exciting career pathways with our professional Support Service.

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    Whitianga Wharf

    Whitianga Wharf sea levels
    Tides
    Storm surge

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    Tangaroa new logo

    RV Tangaroa

    Facility
    RV Tangaroa is New Zealand’s only ice strengthened and dynamically positioned deep-water research vessel.
    Oceans
    Vessel capability

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    Ways to improve stream water quality

    Freshwater quality

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    Altered water flow (hydrology)

    Each waterway has its own particular characteristics relating to water flow, velocity, and quantity.
    Freshwater

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    Planning for coastal adaptation

    Service
    Coastal risk exposure for New Zealand, adaptation guidance for local government and relevant summaries of previous court cases and Building Act 2004 determinations.
    Coastal hazards

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    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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    NZ from Space - About

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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.
    Citizen science

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    UV index signage at Lauder

    UV Index Information

    Education Resource
    The UV Index is a measure of the intensity of UV radiation. The UV Index supersedes the idea of "Time to Burn" or "Burn Time", which has been used previously in New Zealand.
    UV and ozone