We're set for a fourth heatwave of the year(Image: Lindsey Harris / M35 Photography / SWNS)

Britain is set to be baked in a fourth heatwave this week with temperatures set to soar to 35C. The return of sweltering conditions follows some much-needed rain across the country this weekend.

Parts of the UK will have only just seen an end to their third heatwave after three consecutive weeks above the temperature threshold.

But forecasts suggest an even more intense surge of heat could arrive by midweek. The hottest weather will start in central and eastern England on Tuesday before spreading north and west.

Wednesday is likely to be the hottest day of the week, with East Wales and most of England set to see temperatures between 30-35C.

It could hit 35C once again(Image: Getty Images)

This week’s heatwave may not be the last of the summer, the Met Office’s long range forecast suggests.

The Met Office said: “By next weekend, the forecast suggests a return to cooler weather with Atlantic systems bringing some rain and westerly winds.

“Unfortunately for southern areas, where the rain is needed most, it may remain dry. How long the heat lasts depends on whether a southerly or westerly wind develops.

“A westerly wind will bring an end to heatwave conditions, while southerly winds could signal a return to intense heat.”

The heatwaves come as wildfires tear through parts of the UK.

It'll be hot again(Image: WXCHARTS)

Homes were evacuated as a blaze swept through the Cairngorms National Park in what Police Scotland declared as a major incident.

Wildfires continue to burn across the Rhinogydd mountains, North Wales, and Blaenavon, South Wales, with the latter affecting 220 hectares.

The past days have also seen blazes on healthland on the Isle of Wight, woodland in the New Forest and fields in Tadley, Hampshire.

Wildfires have swept across parts of the UK(Image: RSPB Scotland/AFP via Getty Images)

The UK has had 20% of its average July rainfall, which takes into account the wetter areas.

It is “very, very unusual” for a hot and dry spell to last this long, Mr Petagna added.

The dry conditions follow last year’s drought summer, as the UK faces more extreme weather fuelled by human-caused climate change, mostly from burning fossil fuels.