UPDATED
The first day of summer kicks off with a number of heavy rain warnings, mainly across the North Island, while a cold southerly is heading towards the South Island. 

Tthe MetService has issued 14 weather warnings for the central and lower North Island and upper South Island.

All current warnings, in their entirety, can be found by clicking here.

Nor’westers will continue to pump in very high humidity over northern New Zealand, often at 100%.  Combined with warm air the humidex, which calculates air temperature plus humidity to create a ‘feels like’ temperature, will be as high as 24 overnight and up to 32 during the day in parts of Northland and Auckland.

See WeatherWatch.co.nz’s forecast for Auckland for the next 10 days here, including humidex temperatures for the next few days.

In the South Island it’s a different story, where it will feel more like the start of winter rather than the start of summer. 

While today should be a few degrees warmer than yesterday it will be short lived with another southerly moving up tomorrow.  Daytime highs will struggle to reach the teens tomorrow with overnight lows mainly in single digits.

WeatherWatch.co.nz doesn’t expect it to warm up in the South Island until the weekend, while the North Island will remain hot and humid in some areas until early next week.

Image: Mandeno Moments