On the market, traders are weighing up their options, with some considering changing their hours.
Barclay Gray, owner of Lucy’s Chips, said they may be closing early.
“If it is really hot, the market will probably be quieter anyway,” he said.
“We have been drinking plenty of fluids and try and keep ourselves cool with fans.”
Emily White works at the Ice Cream Parlour on Gaol Hill at the market, and said that despite selling ice creams, it was not cool behind the counter.
“The whippy machine gets really hot so we have had a fan on to stop it from going into overdrive,” she said.
“If the heat is unmanageable by midday, we may call it a day.”
However, Alan Zhang, who runs Taste of Shanghai with his wife Lisa Wang, is not phased by the rising temperatures.
He said: “We are not worried, how many hot days the whole year round do you have?”
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