STILL no let-up: 90F south will be hotter than Miami this week with three more hot months on way as drought makes parts of nation look like Mars

• Forecasters say this week will be hot with 90F (32C) today as high pressure continues to move over Britain
• Met Office issues a level three health alert, warning of 90% chance of heatwave for today and tomorrow
• Temperatures in South will soar again with lots of sunshine, but Kent and Sussex may face thunderstorms 
• Met Office has predicted in its three-month forecast that the warmer weather is set to last well into autumn

It's been a scorching hot summer for Britain that now seems likely to carry on well into October.

And some parts of the country are now resembling the planet Mars, with the tailing lagoons in the historic Wheal Maid mine in Gwennap, Cornwall losing all their water due to evaporation during the heatwave.

This has left behind all the mineralised silt from years of mining - creating a landscape like that of Mars. The bright baked colours are made up of deposits of copper, cadmium, chromium, iron, lead, nickel and zinc.

The mine itself was first opened in 1782 - and although it was mostly used to mine copper, there were a number of by-products that are still present today, including black tin, arsenic, pyrite and zinc ore.

Wheal Maid was once part of the Great Consolidated Mine, first opened in 1782. But by 1870 much of the useful minerals had been mined, and the entire site was closed by the early 1990s before being opened to the public.

This week, forecasters say the weather will start off particularly hot, with parts of England reaching 90F (32C) - hotter than Miami, Florida, at 86F (30C) today. Meanwhile the North could see temperatures around 82F (28C).

The tailing lagoons in the historic Wheal Maid mine in Gwennap, Cornwall, have lost all their water due to evaporation

The evaporation at Gwennap has left behind all the mineralised silt from years of mining, creating a Mars-like landscape

The bright-baked colours in Cornwall are made up of deposits of copper, cadmium, chromium, iron, lead, nickel and zinc

This secluded part of Cornwall now looks as alien as anything any rover has seen on the red planet

Wheal Maid in Cornwall was once part of a site called the Great Consolidated Mine, first opened in 1782

Archie Thomas takes pictures of the historic Wheal Maid mine in Gwennap as he explores the lagoons

But the mercury is expected to fall from Wednesday, with highs of 75F (24C) more likely in the South East by then - before dropping further for the rest of the week to a rather more comfortable 72F (22C).

The Met Office issued a level three health alert this morning, warning of a 90 per cent chance that Britain would have heatwave conditions from now and 9am on Wednesday and asking people to look out for the vulnerable.

It comes after Britons on holiday in southern Europe endured near-record breaking heat over the weekend. The mercury reached 116.2F (46.8C) at Alvega in central Portugal, while the capital Lisbon sizzled in 111F (44C). 

Emergency services in the country also issued a red alert and urged people to avoid picnics and outdoor activities. The hot, dry conditions have led to several wildfires, including one near Monchique in the Algarve.

It was slightly cooler in the UK yesterday, as temperatures peaked at 86.4F (30.2C) in Northolt, West London. 

A Met Office forecaster predicted that we will bask in hot, dry conditions all week – with the South East looking likely to simmer in above-average temperatures throughout August.

Heatwave causes spectacular fogbank as blast of hot air creates thick low-lying cloud over the sea

It appeared at first like someone might have placed a huge barrier across the water off the coast of Britain.

But this stunning photograph shows the unusual formation of a 'fogbank', which is a thick cloud of fog seen over the sea, off Land's End in Cornwall.

The strange weather event, captured on camera on Friday at about midday, was caused by moisture in the air above the resort at the end of another hot day that saw temperatures rise as high as 91F (33C) in England. 

An astonishing cloud bank of mist photographed over the sea at Land's End in Cornwall at midday on Friday

Known as advection fog, the phenomenon occurs when warm, moist air blows over colder water or air. This causes the hotter air to rapidly cool, forming water vapour that shapes into a vast invisible wall of condensation.

The invisible water vapour condenses, forming a 'fogbank' - a dense mass of fog typically seen at sea. The meeting of the two different air pressures meant the bank stagnated last week, allowing it to maintain its shape.

The picture was posted on Instagram, with user 'chefinmyhomecornwall' saying: 'Remember this happening whiles surfing down Gwynver a while back, spooky and stunning.'

John George added: 'Yes, beautiful, I witnessed something similar on the east coast - Bempton cliffs. You have to be there to fully appreciate, great photo.'

A Met Office spokesman said forecasters confirmed to MailOnline today that the formation was a 'very well-defined fogbank', having studied satellite pictures and observations from the area.

Temperatures could potentially peak at 93F (34C) in Essex or Norfolk tomorrow, after a balmy weekend where the hottest temperature yesterday was 86.4F (30.2C) recorded in Northolt, West London.

However, not all of the UK will be gazing into clear blue skies - because much of Scotland and Northern Ireland will start the week with some rain.

England and Wales are to stay generally dry and warmer, with the exception of possible thunderstorms across the South East on Tuesday. And maximum temperatures are likely to dip to the mid-70Fs (mid-20Cs) by Wednesday.

It comes amid a sweltering European heatwave, with holidaymakers in Portugal and Spain feeling the brunt of the sun. The mercury is being pushed up by a hot air mass moving north from Africa, bringing dust from the Sahara.

Meteorologist Deane Hall said: 'The South-East will have above-average and dry temperatures until the end of the month. The hot and warm temperatures in August are set to continue. 

'We may see occasional breaks but it looks like throughout next week and the following week we'll get some high pressure again and temperatures will remain at the high 20Cs (low 80Fs).'

The Met Office also predicted that the warmer weather is set to last well into autumn.

Its three-month forecast, which is briefed to local authorities and transport organisations, said: 'For August-October, above-average temperatures are more likely than below-average.

'The probability the UK average temperature will fall into the warmest of our five categories is around 55 per cent. The coldest of our five categories is less than 5 per cent.'

The Met Office heatwave alert said: 'Sunny conditions across South East, East and also London regions will lead to very hot temperatures on Monday and Tuesday, perhaps extending into neighbouring regions at times.

Top temperatures so far this month in Britain

• Wednesday, August 1 - 80.4F (26.9C), Kew Gardens, West London
• Thursday, August 2 - 87.1F (30.6C) - Gravesend, Kent
• Friday, August 3 - 91.8F (33.2C) - Kew Gardens, West London
• Saturday, August 4 - 85.6F (29.8C) - Gosport, Hampshire
• Yesterday (August 5) - 86.4F (30.2C) - Northolt, West London

Whilst also warm or very warm across other areas, temperatures should remain largely below threshold for these regions. Through Tuesday evening thunderstorms could affect the far southeast and east, before clearing overnight. Less hot conditions are then expected to spread to all areas by Wednesday morning.'

Advice includes staying out of the sun, drinking fluids and keeping your home as cool as possible by shading windows and shutting them during the day, before opening them when it is cooler at night.

Temperatures in the South are expected to peak again today with lots of sunshine and highs of 88F (31C) – with scope for 90F (32C) in some regions such as East Anglia. But Kent and Sussex may be hit by the occasional thunderstorm at night.

Highs of 82F (28C) are predicted in Northern England – but there may be the odd blip in the sunshine as scattered showers move over Cumbria.

Tomorrow will be similarly hot in the South with the temperature steadily rising in the afternoon. 

However, patchy rain is expected to move over northern areas and the Midlands, hitting cities including Glasgow, Birmingham and Newcastle. It is expected to dry out with clearer sunny spells settling in by the afternoon.

A jellyfish lies on the beach at Tynemouth today, as the continued hot weather brings the marine animals to England's shores

Paddle boarders off the coast of Tynemouth in Tyne and Wear this morning as the hot weather continues across the UK

Another jellyfish lies on the beach at Tynemouth in Tyne and Wear today; one of many seen on the North East coast of England

How Britain's temperatures have been over 75F for 44 days in a row during the prolonged heatwave

The top temperature in Britain has been over 75F (24C) for 44 days in a row up to and including yesterday.

Of those 44 days, some 27 have seen temperatures of at least 85F (29.4C), while eight have been at least 90F (32C). 

The hottest day of 2018 record has been broken six times within the period - including on four days in a row in June. 

The lowest reading in the 44-day period was 75.2F (24C) on July 28, while the highest was 95.2F (35.1C) two days earlier.

Here are the top temperatures recorded in Britain on each of the past 44 days: 

A mixture of sunshine and rain will sweep over the country on Wednesday – with temperatures cooling to something more comfortable across most areas.

The blistering heat has already spoiled the fun for one Norfolk town, which scrapped its traditional carnival fireworks and torchlight display amid fears of sparking a blaze in the tinder-dry countryside.

Hundreds of people usually turn out for the event in Sheringham – which takes place on the local golf course – however organisers said they had taken advice from the fire brigade. 

The committee said it was a 'momentous decision' to cancel the plans. It comes as the Home Office is being urged to ban lighted party lanterns to prevent devastating moorland blazes. 

Eat spicy chilli, tikka masala, a Thai curry or soup to keep cool in the heatwave, say experts

You might not think that a spicy chilli, tikka masla curry and soup would be the best things to eat to cool down during the heatwave.

But it turns out that having a hot meal in the evening can actually help you stay cool by the sweat you perspire evaporating into the air and cooling the body.

A chilli can also be helpful, with the capsaicin found in the food sending a signal to your brain that your body is overheated - so you will sweat more to cool down.

The powerful anti-inflammatory effects of turmeric make a tikka masala curry a good option

A bowl of soup in the evening as temperatures start to drop can actually help people stay cool

Watermelon has citrulline, an amino acid which relaxes you and helps to dilate blood vessels

Tucking into watermelon, turmeric and reducing the carbohydrates and protein in your diet are also good ways to beat the heat.

Nutritionist Daniel O'Shaughnessy has teamed up with online delivery firm JustEat to compile a list of the best foods to eat or avoid in order to cool down.

Traditionally seen as a winter dish, a bowl of soup in the evening as temperatures start to drop can actually help people stay cool, Mr O'Shaughnessy explained.

He said: 'It will make you perspire more, but as the sweat evaporates, the energy is absorbed into the air, therefore cooling the body.'

Mr O'Shaughnessy also believes a spicy chilli is a good choice, with the capsaicin found in the food sending a signal to your brain that your body is overheated.

As a result, you will sweat more to cool down. The powerful anti-inflammatory effects of turmeric also make a tikka masala curry a good option in the heat.

Curcumin, which is the active ingredient in the spice, helps promote good circulation, helping to speed up your blood flow and cool your body down.

Mr O'Shaughnessy also named onions as a top pick, with the vegetable being used in Ayurvedic medicine, a traditional form of Indian medicine which is more than 3,000 years old, to treat heatstroke.

Other heatwave choices recommended by the nutritionist include mint, thanks to its cooling sensation, as well as spinach, which contains the vitamins and minerals needed to help keep your blood pressure under control and keep you cool.

Mr O'Shaughnessy said coconut milk, found in Thai green curry, has important nutrients to support hydration, prevent exhaustion and muscle aches in hot weather.

And watermelon, which is high in water content, also contains citrulline, an amino acid which relaxes you and helps to dilate the blood vessels, meaning more blood can circulate around your body and cool you down.

But there are some foods to avoid, with Mr O'Shaughnessy advising Britons to cut down on carbohydrate-rich foods, such as rice and wholegrains, and foods high in protein like chicken.

He said: 'It may be harder to digest a high protein food in a heat wave. Meat is quite hard to digest and the digestion process creates heat (thermogenesis) and can make you feel hotter in yourself.

'Opting for plant-based dishes can be a good choice as less energy is needed to break vegetarian dishes down compared to meat.'