Pakistan continued to sizzle in the heat on Wednesday, with its largest city recording the hottest day of the year, according to a Geo News report.

The mercury shot up to 45°C in Karachi as another heatwave continued to prevail in the metropolis.

Similar scorching temperatures were recorded elsewhere in Sindh earlier Wednesday: Larkana 46°C, Dadu 45°C and Sukkur 44°C.

According to the Pakistan Meteorological (Met) Department, mainly hot and dry weather is expected to prevail in most cities including Lahore, Faisalabad, Multan, Hyderabad, Sukkur, Larkana, DI Khan, Sibbi, and Makran divisions well into the first week of June.

The Met’s Director-General Ghulam Rasool told Geo News earlier that the current temperatures are higher than average, and that they are predicted to prevail through the first week of June.

He said there is no chance of rain at the moment, but rain is expected to disperse the heat from mid-June onwards.

"The demand for water would increase due to hot weather, but the beginning of monsoon around mid-June would decrease drought-like conditions," he said.

Last week, a welfare organization, the Edhi Foundation, operating morgues and an ambulance service in the country, claimed that it had received over 65 bodies of people who had died of heat stroke. However, the provincial health authorities denied the claim, according to a Khaleej Times report.

A severe heatwave in 2015 killed at least 1,200 people, mostly elderly, sick and homeless mainly in Sindh province.