August to face 'changeable' weather after July's heatwave While the mercury reached as high as 33C during the hot, dry weather of this month, average temperatures for even in the South East in August are predicted to be around 21C, the Met Office said. George Goodfellow, a forecaster from the Met Office, added: "We are seeing indications that the showers may be a bit more focused on the North West, so it should be a fairly standard North West to South East split for much of August. The general idea is that the North West is going to see temperatures around average for the time of year, and more of the showers, while in the South East there is a greater chance of warmer weather. The first week of the school holidays are set to be a washout after flash floods hit Scotland, northern England and the Midlands yesterday. A month's rain fell in some areas, with the Environment Agency issuing more than 30 warnings over the weekend as storms swept in. Tornadoes were spotted over houses in the Isle of Lewis in Scotland and in Glenshane Pass in Northern Ireland as storms hit on Friday. In just four hours on Saturday evening Market Bosworth in Leicestershire faced 61mm of rain, which compares with an average rainfall of around 80mm for the whole of July, forecasters said.