A cool down is coming but the warmer than normal sub-tropical air flow still covers the North Island for Thursday.
It’s quite a basic set up – an enormous high that has influenced New Zealand’s weather for a week and half now lies east of us. The size of this high means the anti-clockwise winds going around it are being pushed right up to Fiji, then pulled back down again over NZ. This has been the process since late Sunday but peaked over Wednesday and this morning in northern NZ.
So while Thursday is warmer than average in the north – Friday looks more normal, or cooler than normal, thanks to a southerly change coming in before the next big high nationwide.