Forecasters expect September's heatwave to peak on Saturday with temperatures potentially reaching as high as 33C in parts of the country.
The weekend is expected to see the hottest day of the year, however, northern parts of the country are expected to be significantly cooler.
The UK Health Security Agency (UKHSA) issued an amber warning for heat until Sunday evening at 9pm. This means vulnerable groups of people such as those over the age of 65 or living with a pre-existing health condition should avoid excessively high temperatures due to adverse health risks.
It is unusual for temperatures to remain this high for so long at this time of year, with the Met Office predicting five to six days above 30C in some areas. Try MEN Premium for FREE by clicking here for no ads, fun puzzles and brilliant new features The heatwave has been driven by tropical storms pushing a high-pressure system over the UK, with the jet stream moving to the north and bending into what is known as an omega-blocking pattern.