The heatwave has been keeping St John Ambulance busier than usual, as much of the country slogs through temperatures around 30 degrees.
It's a hot start to 2018. Photo: 123RF
Over the past week there's been an average of 34 reports a day of people who have complained about the heat or felt hot prior to their medical event.
On the 20th of January there were 44 call outs.
It is getting an average of 10 more heat-related callouts daily than it did last January.
A St John spokesperson said they were continuing to advise people to stay out of the sun if they could and drink between six to eight glasses of fluids a day.
He said people should keep an eye on the elderly, young children and those with pre-existing conditions.
Meanwhile, another blistering hot day is forecast across the country today, and there will be no reprieve until later next week.
Records were broken yesterday in Wanaka, where the temperature soared to 35.2, and in Whangaparaoa, where it reached 28.8.
Metservice meteorologist Kyle Lee said the heat will continue today.
"Around about the Waikato Region, we've got Taumarunui and Te Kuiti also going up to about 31/32 degrees, which is meant to be our tops for the North Island ...for the South Island the highest temperatures we're expecting is going to be Wanaka and Reefton, which is also expected to get around about the 33 degree mark."
Kyle Lee said the 30-degrees expected on the Kapiti Coast, Upper Hutt and Lower Hutt was between eight and nine degrees above the January average.
He said MetService was not currently predicting anywhere to reach 40 degrees, but he could not rule out the possibility.
He said it was likely to get even hotter before things cooled off slightly from about midweek onwards.