The week after Easter was warmer than average for a number of regions especially those in the east and today will continue this warm trend in the North Island but colder changes are coming from further south as we head into Sunday and the start of next week.
For Saturday expect average temperatures in most regions but it will again be warmer than usual across the entire North Island (especially the east) and the very upper South Island. A cool change brushes Canterbury today bringing a much cooler day than Friday.
Sunday is a fairly average day nationwide ahead of the southerly which comes in late in the day but mainly across Monday (and peaks in northern NZ late Tuesday and across Wednesday).
On Monday a big portion of the South Island will be 4 to 8 degrees cooler than usual.
– WeatherWatch.co.nz (An official The Weather Company/IBM business partner)