Many of those particles have also landed throughout Mt Aspiring National Park on the west coast of the South Island close to Wanaka.
In a blog post on her Young Adventuress website, Liz Carlson described the surreal site of seeing the glaciers turn a dusty pink due to the descending Australian ash and dust.
She said the skies around Wanaka first turned the drab yellow shade, by now quite familiar to Sydneysiders, but then cleared a couple of days later.
Carlson took a helicopter ride towards Mt Aspiring and was puzzled by what she saw.
"As we got closer and closer towards the first of the mighty glaciers, I pulled my sunglasses off to wipe them. Did I see things or did the snow look, well, a bit red?
Photo / Liz Carlson
"From far away, the glaciers looked almost dirty, a sooty look they often get at the end of a hot summer as the ice melts and rock tumbles down onto the ice in certain places. But it was springtime," she wrote.
"The recent westerlies have brought a red haze and smoke across the (ditch) here to New Zealand.
"As the dust settled across the South Island, it coated our glaciers in a layer of red too."
Meteorologists have said the distinctive colour was likely also due to red dust and earth being picked up from inland areas of Australia and then carried along with the smoke.
#Smoke from the fires in eastern #NSW can be seen streaming over the Tasman Sea and the North Island of New Zealand this morning. Smoke haze will persist in many coastal areas today under westerly winds. Poor air quality today for Sydney. Air quality info: https://t.co/YijmcSp8eXpic.twitter.com/lGk942khPM
— Bureau of Meteorology, New South Wales (@BOM_NSW) December 4, 2019
Carlson said the sight of New Zealand's normally pristine glaciers flecked with a powdery pink coating was "crazy".
With no signs of rain to dampen the bushfires west of Sydney, and no change to the westerly winds to take the smoke elsewhere, there's every chance New Zealand could continue to feel the effects of Australia's scorching summer.
Satellite images have shown the plumes from NSW joining together in one vast haze in the Tasman before enveloping New Zealand.
Photo / Liz Carlson
It has led to several weeks of stunning sunsets across the country as smoke and dust diffuses the last rays of the sun.
"While I'm no scientist, I wonder if this layer of red will exist in the ice to tell the story of the bushfires in a thousand years?" wrote Carlson.
