Disclaimer: The forecasts offered in this page draw upon modified Copernicus Climate Change Service Information [2022] (C3S, https://climate.Copernicus.eu). There is inherent uncertainty in ...

A NIWA-led study has found New Zealand’s native forests are absorbing more carbon dioxide (CO2) than previously thought.

Regional predictions for June – August 2025 The tables below show the probabilities (or percent chances) for each of three categories: above average, near average, and below average. In the absence of ...

Seasonal air temperatures are expected to be above average across all New Zealand regions, with particularly warm overnight temperatures driving this trend.

Outlook summary In March 2025, the oceanic markers of La Niña weakened significantly, with most now falling within the ENSO-neutral range. The atmosphere, however, still exhibits signals consistent ...

The risk of undersea landslides and their potential to cause tsunamis along New Zealand’s east coast is being investigated by scientists aboard the German research vessel RV Sonne as part of a ...

January 2025 was characterised by lower than normal mean sea level pressure (MSLP) to the east of Aotearoa New Zealand, with more southeasterly airflows than normal. This contributed to temperatures ...

Overview 2024 was Aotearoa New Zealand’s 10th-warmest year on record. The 2024 nationwide average temperature calculated from NIWA’s seven station series was 13.25˚C, being 0.51˚C above the 1991-2020 ...

Regional predictions for January – March 2025 The tables below show the probabilities (or percent chances) for each of three categories: above average, near average, and below average. In the absence ...

New Zealand’s 5th-warmest December on recordDecember 2024 was characterised by lower than normal mean sea level pressure (MSLP) over and surrounding Aotearoa New Zealand. This produced more easterly ...

To give us insights to sea surface temperatures, NIWA scientists have combined predictions from 8 climate models from institutes around the world.

November 2024 was characterised by a large belt of higher-than-normal mean sea level pressure that straddled Aotearoa New Zealand and the surrounding seas. This pressure setup resulted in a relatively ...