Environment Canada has lifted heat warnings for the affected regions, including Quebec, for the next several days.
The death toll in Quebec due to the heat wave has increased since yesterday's reported number.
A heat wave in Quebec has killed almost three dozen, some reports said, as high summer temperatures scorched eastern Canada.
Most of the victims linked to the "overwhelming heat" were in the Montreal area, which recorded 28 fatalities, metropolitan health authorities told AFP in an email.
Temperatures soared to 93 Fahrenheit with a humidity that made it feel much hotter than that, the meteorological service said.
So far, 18 of the 33 deaths have been in Montreal, the most populous city in the province, with other deaths in surrounding regions.More news: Heat warning for Sudbury to continue to Friday
Dr David Kaiser, the senior physician at Montreal's public health agency, said that most of those who had died from the heat in Montreal were 65 or older, had histories of health problems or mental illness and had been living without air-conditioning. "Obviously when we get there and the person may have passed, they're very rarely already with family".
Canada's weather department added smog warnings for certain areas of the province on Thursday, when the heat wave is forecast to end.
Officials urge people to drink plenty of water and stay in the shade, to go to the neighbors and be interested in their health.
"The higher temperatures and humid Sunday and Monday will mostly affect southern Quebec", said Serge Mainville of Environment Canada, according to CNN news partner CBC.
Prior to this, the only heat wave that Parent remembers being so memorable was a four to five day period in 2010.