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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    Soil moisture anomaly map (mm) at 9am on 20 December 2023

    Hotspot Watch 20 December 2023

    Hotspot
    21 December 2023
    This is the last Hotspot Watch for 2023. Normal service will resume on 11th Jan 2024.

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    2023_Dec_Annual_climate_summary_teaser

    Hot stuff for 2023 and Christmas forecast

    Media release
    21 December 2023
    2023 is tracking to be one of the top three hottest years on record for Aotearoa New Zealand.
    Climate and weather

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    NIWA marine bio tile

    NIWA Biodiversity Memoir 136 - The Marine Biota of Aotearoa NZ

    New Zealand’s marine biodiversity checklist has been updated, representing an increase of 3,630 known living species since the turn of the century.
    Fish
    Oceans
    Marine invertebrates

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    NIWA 2023 Annual Report cover

    2023 Annual Report

    Read NIWA's 2023 Annual Report.

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    Soil moisture anomaly map (mm) at 9am on 14 December 2023

    Hotspot Watch 15 December 2023

    Hotspot
    15 December 2023
    A weekly update describing soil moisture patterns across the country to show where dry to extremely dry conditions are occurring or imminent.

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    LakeSPI reporting site

    LakeSPI reporting site

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    NIWA Invertebrate Collection Database on OBIS

    NIWA Invertebrate Collection database on OBIS

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    Hotspot Watch 8 December 2023

    Hotspot
    08 December 2023
    A weekly update describing soil moisture patterns across the country to show where dry to extremely dry conditions are occurring or imminent.

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    NIWA Year in Review cover

    2023 Year in Review

    Read NIWA's 2023 Year in Review.

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    Learning Support #4: Applying the learning - reimagining the town’s response

    Education Resource
    Rethinking the way we adapt to climate change and flooding.

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    Learning support #3: Climate change and floods - values, perspectives and decision-making

    Education Resource
    How does exploring different perspectives shape the decisions that are made about how we adapt to climate change?
    Climate change adaptation

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    Comprehensive eruption study highlights need for further work

    Media release
    01 December 2023
    A new study has comprehensively mapped the immediate after effects of the January 2022 eruption of Hunga Tonga - Hunga Ha’apai, highlighting the risks of similar events.
    Geological hazards
    Volcanic eruptions