The sweltering heat bathing the country is showing no sign of relief today - with temperatures set to soar even higher. Wanaka smashed records over the weekend - soaring above 35 degrees celsius - and the region is again set for a scorcher. MetService is predicting temperatures in the mid to high 30s around Central Otago - with an outside chance of cracking 40 degrees. The forecast is for quite a change - a tropical low swooping in and potentially bringing a serious storm with it - heavy rain and gales across south and central New Zealand and a dip in the temperature. But in the meantime, what's the best way to stay safe in the heat? Dr Tim McKay is the Deputy Medical Officer of Health for the Southland DHB which is set to get some of the hottest temperatures today. He discusses the weather with Guyon Espiner.