There are major slips, some flooding and houses and businesses being again inundated.
Finance Minister Grant Robertson says insurance companies are signalling the flooding will be the biggest non-earthquake event the country has seen.
But there are signs things a beginning to return to normal as Auckland Airport returns to normal flight operations.
Earlier, the new Minister for Auckland Michael Wood said volunteers had been out in his Mt Roskill electorate helping to evacuate vulnerable residents.
There were also reports of flooding and landslips in Devonport, Auckland Emergency Management says.
There are still deep pools in dips in roads around the central city suburbs of Sandringham and St Lukes as well as near Eden Park and flooding in Onehunga and around Glenfield /Wairau where there was extensive flooding on Friday.Waka Kotahi said numerous sections of Auckland's motorways were flooded due to significant rainfall, with some sections unpassable.
More than 3000 homes and businesses were without power earlier today, largely due to trees falling on powerlines.
MetService forecaster John Crouch said about 20-30mm an hour of "intense rainfall" had fallen in Auckland city early this morning, but the rain band was moving south a bit faster than thought earlier.
MetService says the bulk of the heavy rain had moved into Auckland and Coromandel with the latter warned to expect 100 to 150mm of rain about the ranges, with lesser amounts about the coast.
The red heavy rain warning, severe thunderstorm watch, and the strong wind watch all ended for Northland at 4am.
"The situation here continues to be serious and this rain going through this morning, on its own it wouldn’t be such an issue but it's coming on top of what has been a very serious weather bomb event for the region.
"Things are very sodden, we’re not out of the woods yet, we’re asking people to stay vigilant, stay informed and look after friends and family," he said.
Auckland mayor Wayne Brown has urged residents to "stay home" wherever possible.
That includes two dozen people sheltering at an emergency community hub in Auckland's Mt Roskill who were placed in hotel and motel rooms last night.
So far, more than 100 homes have been red-stickered and 375 have been yellow-stickered.
Fire and Emergency NZ has responded to 63 incidents since 6am, including rescues.
The majority of the callouts were regarding fallen powerlines and flooding.
Pens Cook, whose home is next door to the entrance to Grey Lynn Park, said this morning the water came up to the calf of his leg at the height of the rainfall about 6.20am.
He said the rain running off the park was worse than Friday, which he put down to the drainage.
"My son got up to have a look and said you had better move the cars," said Cook, who lost several cars to the floods on Friday.
The bottom floor of Pens' ground floor, where his son sleeps, was completely flooded on Friday, saying he had been using a dehumidifier to dry out the floor and pull out the Gib and insulation when the rain hit again this morning.Cook said three 9-metre jumbo bins of rubbish had been taken away from his property since Friday.
Grey Lynn Park again had a lake of water this morning, although much smaller than on Friday.
"It's just horrible for some people," she said.
Northland breathes sigh of relief
The state of emergency declared for Northland yesterday in response to the region's red heavy rain warning was lifted at 10am today.
The region had bands of heavy rain through the night, but fears the region would be hit as hard as Auckland was at the weekend proved unfounded.
The most rain fell around Whangārei airport, with 60mm in the eight hours to 4am today, with half of that falling in one hour around 9pm.
Northpower said more than 500 customers suffered a power cut just before 11pm after trees fell across lines. As of 9am Wednesday the power was still out west of Waipu, near Waiotira and Springfield, according to Northpower's outage map.
With just a "normal" amount of rain forecast for next couple of days, Northland Civil Defence Emergency Management chair and deputy mayor Kelly Stratford told Morning Report many residents could now go about their "normal business".
"Yesterday was, as things developed through the day and the weather pattern was quite fast in the beginning and it slowed down, there was a couple of hours there where that sense of uncertainty was heightened.
"But gosh, in the afternoon as it bounced off, deflecting -I think we were all sending positive energy and it just skirted around us. We were all very happy."
Asked for advice, she said to not hang any washing outside just yet.
"We've got showers coming. I think we'll all still be using our drying racks."
- Additional reporting NZ Herald
