Climate and weather

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A weekly update describing soil moisture patterns across the country to show where dry to extremely dry conditions are occurring or imminent.
A weekly update describing soil moisture patterns across the country to show where dry to extremely dry conditions are occurring or imminent.
A weekly update describing soil moisture patterns across the country to show where dry to extremely dry conditions are occurring or imminent.
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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This research project aims to establish connections between weather and river flow forecasting, inundation prediction, and the associated risks to people and assets, using the RiskScape platform.

Latest videos

Why was 2021 New Zealand’s warmest year on record?

It's official, 2021 was Aotearoa New Zealand’s warmest year on record. The year 2021 finished with an average temperature of 13.56°C in New Zealand, this was 0.95°C above average (relative to the 1981-2010 baseline) and surpassed 2016 to become the country's new warmest year on record. Read more at Annual Climate Summary 2021.

2022-23 Summer Climate Summary from Ben Noll

2022-23 Summer Climate Summary from NIWA Meteorologist/Forecaster Ben Noll. See all the numbers and facts for New Zealand's wild summer weather

Tropical Cyclone Outlook: November 2021-April 2022

The NIWA and MetService assessment of named tropical cyclone (TC) activity indicates 9 to 12 named TCs could occur in the Southwest Pacific basin between November 2021 and April 2022. The seasonal outlook is for normal to slightly above normal activity in terms of overall named TCs in the region.

Tropical Cyclone Outlook: November 2020-April 2021

The NIWA and MetService assessment of named tropical cyclone (TC) activity indicates 8 to 10 named TCs could occur in the Southwest Pacific basin between November 2020 and April 2021. This seasonal outlook is for normal to below normal activity in terms of overall named cyclone systems in the region. 

Welcome to the NIWA Township Flood Challenge game.
A weekly update describing soil moisture patterns across the country to show where dry to extremely dry conditions are occurring or imminent.
A month of large temperature swings; very wet in Northland.
El Niño continued during October and will likely intensify over the next three months. It has around a 100% chance of persisting during this time. There’s an 80% chance of El Niño continuing through autumn, maintaining an important influence on Aotearoa New Zealand’s climate.
A weekly update describing soil moisture patterns across the country to show where dry to extremely dry conditions are occurring or imminent.
A weekly update describing soil moisture patterns across the country to show where dry to extremely dry conditions are occurring or imminent.

A weekly update describing soil moisture patterns across the country to show where dry to extremely dry conditions are occurring or imminent. Regions experiencing significant soil moisture deficits are deemed “hotspots”. Persistent hotspot regions have the potential to develop into drought.

New Zealand’s warmest September on record
El Niño has officially arrived. A majority of NIWA’s criteria for classifying an El Niño event were satisfied during September. In particular, the Southern Oscillation Index was firmly in El Niño territory, suggesting the atmosphere has become coupled to the ocean.
Forecasting sea surface temperatures several months in advance is challenging. To give us insights into what might happen around Aotearoa New Zealand in the months to come, NIWA scientists have combined predictions from eight different climate models from institutes around the world.
New Zealand’s coldest August in seven years
A warm and dry winter for many parts of the country
"We are pleased with and support Treasury and MBIE’s review of weather forecasting announced by Minister Webb."
NIWA meteorologists say people living in the North Island are likely to get the best views of the Matariki star cluster, particularly on Friday morning.
The monthly NINO3.4 Index anomaly (in the central equatorial Pacific) at the end of June was +0.93˚C. This is warmer than it was at the same time during the development of strong El Niño events in 1997 and 1982.
We’re only halfway through the year, but new NIWA analysis shows some parts of New Zealand have already recorded more than a year’s worth of rain.
El Niño is on its way, with whispers it could cause the Earth’s warmest ever year. But what is it? NIWA scientists tell all.
Forecasting sea surface temperatures several months in advance is challenging. To give us insights into what might happen around Aotearoa New Zealand in the months to come, NIWA scientists have combined predictions from eight different climate models from institutes around the world.
The monthly NINO3.4 Index anomaly (in the central equatorial Pacific) at the beginning of May was 0.21˚C, in the neutral range, but gradually warming.
Dry and warm for many parts of the country
ENSO-neutral conditions persisted in April however seas continue to warm across the equatorial Pacific consistent with a developing El Niño. El Niño conditions may arrive during winter.
Forecasting sea surface temperatures several months in advance is challenging. To give us insights into what might happen around Aotearoa New Zealand in the months to come, NIWA scientists have combined predictions from eight different climate models from institutes around the world.
The monthly NINO3.4 Index anomaly (in the central equatorial Pacific) at the end of March was -0.01˚C, in the neutral range for the second consecutive month.
Dry and cool for upper North Island, wet for South Island
NIWA’s annual end-of-summer snowline survey has revealed continued loss of snow and ice for New Zealand’s famous glaciers.

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Atmospheric Modeller
Emeritus Researcher – Atmospheric Radiation
Principal Scientist - Carbon Chemistry and Modelling
Principal Scientist - Atmosphere and Climate
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Principal Scientist - Research Software Engineering
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NWP/CFD Modeller and Analyst
Coastal and Estuarine Physical Processes Scientist
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Marine Physics Modeller
Principal Scientist - Marine Physics
Greenhouse Gas Emissions Scientist
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Physical Oceanographer
Chief Scientist - Climate, Atmosphere and Hazards
Atmospheric Scientist
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Atmospheric Technician
Maori Organisational Development Manager
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Principal Technician - Climate and Risk Applications Developer
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