2022 winter was the warmest and wettest on record - NIWA

It's official, this winter was both the warmest and wettest on record. 

NIWA's been crunching the numbers and the data shows climate change is not just knocking on our door, it's already here. 

It has been one wild winter. There was heavy rain in Canterbury on July 12, and then again a week later in the same region. 

Wellington got a blast too on July 21, and on the same day, the South got a big dumping of snow. 

In August it was so wet the capital started crumbling. And then the top of the south was hit by a metre of rain over four days, causing widespread havoc for Nelson residents. 

"It was our warmest and wettest winter on record," said NIWA forecaster Nava Fedaeff.

The fact it was the wettest won't be a surprise to many, but nor should the temperature - it has been getting warmer each year.

"The previous warmest winter on record was last year and the one before that was 2020, so in fact, we've had three record warm winters in a row."

And there's a lot of drivers behind it.

"The key one being La Nina, more northerly winds, warm water temperatures. In fact our warmest on record and of course in the background we have our warming climate."

It's not just a trend in New Zealand, climate change is happening everywhere.

Much of Europe was impacted by an intense record-breaking heatwave in July.

And right now a third of Pakistan is underwater, affecting 33 million people, and killing more than a thousand. 

Climate scientist Professor James Renwick told Newshub "it really is happening right before our eyes".

Prof Renwick said we have the power to change that.

"If we could turn off the tap of gas emissions, we could turn off the tap of climate change. It's that simple."

As for the next few months, NIWA said this spring Aotearoa is in for some long dry spells, warmer than average temperatures, and possibly a couple of heavy rainfalls.

Beyond that, the weather isn't easy to predict, but if nothing changes there's one thing you can be sure of.

"All of these extremes will become more and more extreme," said Prof Renwick. 

And more and more records will be broken.