"Really there isn't any major relief for the western arts of NSW and the north west," he said.
Sydneysiders, fresh from the hottest January on record, are again set to swelter now a brief respite of cooler days and nights has ended.
Temperatures in Brisbane and on the Gold and Sunshine coasts are tipped to reach the low 30s for the next few days.
Queensland Bureau of Meteorology forecaster Rick Threlfall said the sustained heatwave in Queensland is unusual.
"Normally you get a heatwave for a day or two before a cool change comes through. But there's no sign of any cool change until next week.
"It will get gradually hotter and hotter each day."
Meanwhile, last night large areas of northern and central NSW were headed for stormy weather, said the Bureau of Meteorology.
Severe thunderstorms with destructive winds, heavy rain and large hailstones are expected over parts of the Mid North Coast, Hunter, Northern Tablelands, Central Tablelands, North West Slopes and Plains and Central West Slopes and Plains.
- news.com.au, AAP