Information about our varying climate is critical for managing resources and reducing risks.

Special Climate Statement - record warmth in the Tasman Sea, New Zealand and Tasmania

Sea surface temperatures in the southern Tasman Sea rose to exceptionally high levels in late 2017 and early 2018. These temperatures were far above any others previously observed at that time of year in the region, and extended west from New Zealand to Tasmania and mainland southeast Australia. In parallel with this, land temperatures were well above average in areas near the Tasman Sea warm anomalies, with many records set both in New Zealand and in southeast Australia (especially Tasmania).

Download: Special Climate Statement - record warmth in the Tasman Sea, New Zealand and Tasmania [PDF, 1.5MB]

Projections of how climate change is likely to affect New Zealand.

Find information about New Zealand's temperature record and climate change in our information and resources section.

The record summer of 2017/18

Less than a week before the official end of summer on 28 February, temperatures dropped and a cool breeze made a whistle-stop tour of the country.

Intensity of cyclones predicted to increase

Tropical cyclones forming in the south-west Pacific are becoming less frequent but those that do form are likely to be more severe.

Solutions: Regional climate change

As climate change takes hold, regional council planning, sustainability and hazard managers are looking to NIWA for help to understand how their communities will be affected.

Winters much shorter than they once were, says NIWA

New Zealand winters are a month shorter than they were 80 years ago, NIWA scientists say.

“This is a consequence of rising temperatures around the globe, and such trends in colder temperatures and frosts will influence the life cycle of plants and animals” - Dr Brett Mullan.