The Pakistan Meteorological Department (PMD) has forecast the heatwave on Sunday with temperatures of 40 degrees Celsius and above.
According to PMD, the temperature is forecast to in between 33 and 36 degrees Celsius on Saturday due to sea breeze from the south wes.
The PMD is also forecasting another spike for Sunday and Monday and temperature is expected to be 41 degrees Celsius.
The Meteorological Department predicts no rainfall in Karachi.
