The heat has caused fires, travel disruption and power cuts.
Emergency services in South Yorkshire, East Yorkshire and North Yorkshire issued "major incidents".
Yorkshire Water has announced a hosepipe ban as a result of the continued dry weather.
In a statement issued by the company, it revealed that parts of Yorkshire had seen the lowest rainfall since records ban more than 130 years ago.
5. August heatwave
On a scorching hot day down on Scarborough's South Bay Beach, Lauryn Lee enjoys an ice cream Photo: Richard Ponter
6. August heatwave
Mya Norton cools off in the sea in Scarborough's South Bay. The warm weather will stick around until Sunday August 14 and it could reach 30C in many parts of the region over the weekend Photo: Richard Ponter
7. August heatwave
Taking colourful cover from the hot sun in Scarborough's North Bay. The Met Office is warning people vulnerable to extreme heat that they are likely to experience 'adverse health effects' while 'some changes in working practices and daily routines' are likely to be required, according to the forecaster Photo: staff
8. August heatwave
Members of the public out enjoying the warm weather in Roundhay Park, Leeds Photo: staff