Brits face tropical weather today as temperatures reach 30C and face thunderstorms.
The Met Office has said those in the South East can expect hot, sunny and humid weather in the coming days.
In the South of England, the mercury could reach 30C and remain in the high 20s through to Thursday.
Temperatures in northern parts of England and Scotland are likely to remain warm but will drop from 25C today to 21C.
Met Office meteorologist Rachel Ayers said it would be "very warm to hot, and humid in the South East" but with "temperatures near average in the North West where it will also be windy".
However, with the balmy temperatures will also come downpours.
Across Wales, Scotland, and central and northern England, heavy showers are expected to come down this morning.
More downpours along with a band of cloud moving eastwards will sweep across Wales and England on Wednesday.
On Thursday, more rain will cover northern parts of the UK.
Tomorrow will also bring the possibility of thunderstorms as showers move across towards the South East across Wales and England.
Northern parts of the UK can also expect to see further showers on Thursday.
It comes after the driest July in England since records began, according to provisional figures from the Met Office.
South East and central southern England saw an average of only 5.0mm of rain last month, while East Anglia had 5.4mm.
For both areas, it was the lowest amount of rainfall in July since Met Office records began almost 200 years ago, in 1836.
Ms Ayers said: "The next couple of days will see unsettled weather for parts of the UK, particularly in the north and west where there will be outbreaks of rain that could be heavy at times, and it will also be windy across the north, particularly on Tuesday.
"In the south, it remains generally dry though there is a chance of some rain on Wednesday though this is unlikely to bring much rainfall to the far south coast and South East.
"It will be very warm to hot and humid over the next couple of days across the South East during the day and overnight, though from Thursday it will be more widely cooler and fresher for a couple of days."
UK 5-day weather forecast
Headline:
Some rain or showers; mostly fine and hot in southeast.
Today:
Occasional rain, with some heavy bursts possible at first, edging southwards across central parts of UK. Skies brightening across Scotland and Northern Ireland, with only scattered light showers. Staying bright and very warm across southern and eastern England. Breezy, humid.
Tonight:
Humid with patchy rain, drizzle and hill fog across parts of England and Wales, although the far south probably mainly dry. Further north, often cloudy with some showery rain developing.
Wednesday:
Patchy light rain and drizzle in parts of southern England should clear, then some very warm sunshine again across much of England and Wales. Northwest UK cloudier with occasional showers.
Outlook for Thursday to Saturday:
Showers, locally heavy with a risk of thunder clearing from Scotland through Friday. Further rain follows for the northwest late in the day and into the weekend. Elsewhere, mainly fine.UK weather forecast: Brits face TROPICAL weather with 30C heat and thunderstorms
