Indian summer 2014: Weather to be 'warmer than average' in September and October

Temperatures could reach the low twenties this week

A man relaxes on a deckchair on the beach in Brighton, on the south coast during hot weather (BEN STANSALL/AFP/Getty Images)

While autumn has officially begun, parts of the UK are set to enjoy a final flourish of summer sunshine before the drearier weather sets in.

Experts predict that the pleasant weather which residents of the south and the south east are currently enjoying will continue until the end of the week.

On Wednesday, temperatures will soar above the September average of 16.5 C to 19C, and by Friday will likely hit 21C.

Sheltered spots in London could see even higher temperatures, according to Met Office spokeswoman Nicola Maxey.

But further north, the temperatures will be slightly cooler.