MetService says the rosy conditions are thanks to an anticyclone that has centred itself over New Zealand.
The dry weather was expected to last for another 24 hours with Sunday looking like "another stellar day across the board".
"Be aware that in true spring-like fashion temperatures will vary a lot from sun up to sun down so taking both a sun hat for the daytime UV and jumper for the end of day barbecue would be recommended," said MetService.
Unfortunately the glorious summer weather is short-lived with a front sweeping up the country over the South Island and lower North Island on Monday bringing with it rain, showers and cooler temperatures.
MetService this morning issued a number of weather warnings for strong winds in the deep south and heavy rain in Fiordland and parts of the West Coast.
There is also a road snowfall warning for two Canterbury alpine passes, with snow starting to fall on Monday evening and affecting Porters and Arthur's Pass.
Today's forecast:
Auckland: Fine, light winds. 20C
Tauranga: Fine. Light winds. 20C
Wellington: Mostly cloudy. Northerlies, becoming strong around midday. 16C
Christchurch: Fine and warm with light winds. 24C
Dunedin: Fine. Light winds. 19C