It comes as the state recorded its hottest maximum temperatures in September – about 5.07 degrees warmer than the average. NSW also recorded its second-driest September on record, with only 6.1mm of rainfall.
Weatherzone meteorologist Angus Konta said much of the warm weather could be attributed to El Nino and the positive Indian Ocean Dipole.
Both weather phenomena drive hotter and drier temperatures across Australia and will continue throughout the summer.
Already, Sydney experienced its hottest start to October on Sunday as the temperature soared up to 14 degrees above average. On Tuesday, the city is expected to experience 33 degrees – the warmest October 3 in the past five years.
The hottest October 3 was in 2007 and 2008 when Sydney Observatory Hill recorded 34.8 degrees.
The heat sweeping across Sydney was caused by a “heat bubble” that formed last week in Western Australia.
Nationally, Australia received only 4.83mm of rain – the least amount of rain on record and 70.8 per cent below the 1961–1990 average.
It was the second-hottest September for national daily maximum temperatures, and only 0.07 degrees below the 2013 record.
Konta said already NSW had seen extreme fire danger days and total fire bans, which was incredibly early in the fire season.
He added that while temperatures would cool off in the middle of the week due to a front moving across Victoria and NSW, the warm weather will return.
Research director at the Climate Council Dr Simon Bradshaw said the heat records were being broken every week, and would likely continue to tumble for the rest of the year.
“The only way to turn down the heat is to turn off fossil fuels,” he said.
“If we don’t hurry up and put the solutions we have at our fingertips in place now, these types of summers will eventually become the norm – and in fact, we may look back on this one as mild.”
More to come
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