Sydneysiders are set to swelter through the city's hottest day in over two years on Monday.
The mercury is set to rise to 35.8C at the city's Observatory Hill weather station, which has not been reached since Australia Day in 2021 – a staggering 769-day stretch.
It comes just over a month since Sydney ended a near year-long stretch without a 30C day in what has been a cooler stretch thanks to a third La Niña.
Those in Sydney's west will face even hotter temperatures, with highs of 38 in Penrith.
And it will get even hotter in NSW's northwest with the towns of Bourke and Walgett both hitting 40C as hot air from the interior is pushed towards the east coast.
It's a different story for the south of the country, with a sweeping cold front bringing rain and gusty winds to South Australia, Victoria and southern NSW. Adelaide and Melbourne will have highs of 22 and 23 respectively for Monday, meaning a drastic 10-degree fall for Victoria's capital from Sunday.
"Sydney will be spared the cooler temps, with maximums remaining in the high 20s next week, although days will still feel cooler after the scorcher on Monday," Weatherzone said. Tuesday is expected to hit 34C.
The Bureau of Meteorology has warned the elevated temperatures for large parts of NSW will bring a greater fire threat around Sydney's outskirts, and particularly in the NSW Ranges and Western Slopes.
Weather around Australia for the week
Melbourne will remain cool throughout the week with possible showers on Wednesday. Brisbane will remain hot all week, with temperatures exceeding 30 each day.
A cold start to the week for Adelaide will eventually warm come the weekend, while Hobart is expecting a cold week which will drop to 15C come Wednesday.
Perth is in store for a warm week, with highs of 34, with a minor disruption of Wednesday with possible showers forecast. Canberra will enjoy some warmer weather this week with highs of 29C on Monday and temperatures will remain high in Darwin with rain forecast throughout the week.
While many Sydney residents will flock to the beach on Monday, beachgoers at Coogee and Maroubra will need to make sure the water is safe to enter after an algal bloom detection meant council issued a warning to swimmers.
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