Sydney weather: When heatwave will end as temperatures hit 40C

An unusual autumn hot spell engulfing Sydney will see residents swelter at least until Wednesday, amid warnings high levels of air conditioner use could spark blackouts.

A burst of late-season heat in NSW drove the mercury up toward to 40C in some parts of the Harbour City – at the airport and Penrith. It was the first time since November 2020 the mercury had cracked 38C.

The stinking hot weather will continue throughout the night in Sydney, with temperatures expected to still be up around 30C at 9pm and possibly in the high-20s at midnight.

The lingering heat could put pressure on the state’s energy supplies as people get home from work and switch on air conditioners and fans for relief.

A burst of late-season heat in NSW on Monday could see Sydney reach 38C 

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Sydney’s autumn heatwave has seen the hottest temperatures for over two years 

Sydney temperatures expected to still be up around 30C at 9pm Monday and possibly in the high-20s at midnight

The mercury will drop slightly to 34C on Tuesday, with temperatures remaining in the high 20s for the rest of the week, and possible showers forecast on Saturday.

However, cooler southerly winds are expected to reach the city on Wednesday.

At 11am AEDT on Monday, temperatures had already reached 34C in western Sydney, 33C at the airport and just over 31C in the city. 

But the state’s highest temperature at the recorded time was 35.8C at Bourke, in the state’s northwest.

At 11am AEDT on Monday, temperatures had already reached 34C in western Sydney, 33C at the airport and just over 31C in the city

The mercury will drop slightly to 34C on Tuesday, with temperatures remaining in the high 20s for the rest of the week 

Temperatures will continue to climb and should peak around 38C in central Sydney city and even up to 40C in some suburbs.

Monday’s scorching and windy weather has also contributed to elevated fire danger warnings across the state. 

There were already 37 fires burning across the state at 11am, and total fire bans were declared in seven of the state’s 21 fire districts until midnight Monday.

Sydneysiders flocked to beaches to get relief from the scorching heat on Monday

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One beachgoer took his workout routine outdoors on Monday