LONDON, Aug. 6 (Xinhua) -- The heatwave which brought Britain's highest ever temperature could continue for several months, with warmer than average temperatures likely until October, the British Met Office said on Monday.

The UK has been experiencing hot weather since April. But the current summer heatwave began on June 23.

There were 907 more deaths than average in Britain in the week after the thermometer hit a record 38.1 degrees Celsius, British official figures showed.

While the temperatures are set to remain high for most of this week, they are likely to drop this weekend to around the mid-20s mark.

Met Office meteorologist Dean Hall said there would be "quite a marked change to the feel of things" when conditions turn "fresher and more changeable."

He said it was likely to stay cooler throughout next weekend, with "no real sign of any return of the heat that we have been seeing over the recent days."

It follows a sweltering weekend across the UK where the hottest temperature of 30.2 degrees Celsius was recorded in Northolt, Greater London, on Sunday.

The mercury is set to rise past 30 degrees Celsius in parts of the UK on Monday. A temperature of 33 degrees Celsius possible in London and to the east of the British capital, the Met Office said.

A level three heat health warning for the southeastern region was issued as a result, with a 90 percent chance of heatwave conditions for the region between Monday and Wednesday, the office added.