Meteorologists are warning temperatures will hit new record highs across southern Europe this week.
The latest forecasts show peaks of 44C (111F) on multiple days, with temperatures consistently in the high 30s and low 40s across the region.
The Foreign Office has issued extreme weather warnings for Britons travelling to Italy, Spain or Greece, advising them to heed local advice but that they won’t be compensated if they choose to cancel their trips.
The European Space Agency has also warned other countries, including France, Germany and Poland, will face extreme heat this week.
The heatwave in Spain is still set to intensify, with temperatures predicted to reach 44C in the Guadalquivir valley near Seville.
It comes as wildfires continue to burn out of control on the Spanish Canary Island of La Palma. More than 4,000 residents were forced to flee their homes on Saturday.
The fire has affected more than 4,600 hectares (11,300 acres) of forest in the north of the island.
More than 300 firefighters, nine water-carrying helicopters and two planes are being used to try to extinguish the blaze.
Spain’s Aemet weather agency said the heatwave this week “will affect a large part of the countries bordering the Mediterranean”.
The agency says it expects temperatures to drop sometime on Wednesday.
The alerts are in place for major tourist destinations including Rome, Florence and Bologna as well as Palermo in Sicily and Bari in the southeast of the peninsula.
Italy’s health minister Orazio Schillaci urged people to take care when visiting tourist hotspots including Rome’s famous ruins.
“Going to the Colosseum when it is 43C (109.4F) is not advisable, especially for an elderly person,” he told Il Messaggero newspaper, saying people should stay under cover and avoid direct sunlight between 11am and 6pm.
Meteorologists have said Europe’s highest recorded temperature of 48.8C (119.8F), registered in Sicily two years ago, could be exceeded in the coming days on the Italian island of Sardinia.
Power outages were hitting parts of Rome as electric grids struggled due to heavier demand from air conditioners.
Greece
Temperatures in Greece are predicted to keep rising this week before hitting highs of 43C (109F) in Athens on Saturday as a second heatwave hits.
Wildfires in two areas around the capital have triggered evacuation orders for at least six seaside communities and the Greek meteorological service has warned of a high risk of fire this week.
The first blaze, which swept through forest land in Dervenochoria 19 miles north of Athens, is still intensifying.
Another fire, which began in the village of Kouvaras 17 miles southeast of the Greek capital, has spread to the coastal towns of Anavyssos, Lagonisi and Saronida and forced people to flee their homes.
The country’s weather agency says the heat won’t change too dramatically before Wednesday, with highs of 39C (102F) in the east and 41C (106F) in the west.
But it predicts that from Thursday a new heatwave will engulf most areas of the country, with minimum temperatures reaching up to 43C (109F) on the mainland, 41C (106F) on the Ionian islands and 38C (100F) on the Aegean islands.
Tours of the Acropolis monuments have resumed normal opening hours after closing for three days during the hottest part of the day over the weekend.
Cyprus
Similarly to Greece, a second heatwave at the end of this week will bring temperatures of 40C (104F) to Cyprus.
Those flying into Paphos can expect temperatures in the early 30s, with Larnaca in the north slightly higher.
According to the Cyprus Department of Meteorology: “The maximum temperature is expected to reach around 40 degrees over inland areas and around 32 degrees Celsius over the highest mountainous areas.
“During Friday and Saturday the temperature is expected to increase further.”
Turkey
Temperatures in Antalya are currently the highest in Turkey at 39C (102F), followed closely by Adana at 37C (98F).
It is not included in the Foreign Office’s extreme weather travel advice, but a second heatwave is due to hit elsewhere by the weekend.
Croatia
Similarly in Croatia, holidaymakers can expect temperatures in the mid-to-low 30s, with areas around Split currently the hottest. The country will hit by even warmer weather as the weekend approaches but is not included in UK heightened travel advice.
Wildfires in Grebastica on the coast caused damage last week.
Extreme temperatures are not expected in most of France according to the national forecaster Meteo France.
An orange weather warning, the second-highest alert, has been issued for some areas along the Mediterranean coast.
Temperatures are predicted to reach 34-36C around Marseille by Wednesday, with Paris staying slightly cooler at 29C (84F).
Poland
Storm warnings are in place across southern Poland.
Near Krakow, forecasters predict severe thunder and lightning as well as winds of up to 55mph (90km) and 2 inches (50mm) of rain.
Temperatures are set to peak at 26C (79F) on Wednesday following highs of 35C (95F) last week.
Germany
Forecasters predict temperatures will also rise slightly in Germany.
Highs of 25C (77F) are expected while yellow weather warnings are in place in some regions due to wind gusts.
USA and Mexico
Outside of Europe – southern US states and northern areas of Mexico are also experiencing heatwave conditions, with Phoenix in Arizona expected to surpass its hottest-ever temperature on Tuesday after 43.3C (110F) was recorded on Monday.
Soaring temperatures in California and other parts of the south are due to continue into next week.
The east coast has been hit by flash floods, with at least three dead in Pennsylvania, and storms in the Midwest have left people in Kansas and Missouri without power.
Several flights were cancelled and delayed around New York on Sunday, with Canadian wildfires still causing heat and air pollution issues in the north of the US.
A woman and three other children managed to escape the property and are being treated in hospital for non-life-threatening injuries.
In a statement, West Yorkshire Police said: “At 1.08 this morning (5 May) police were called by the fire service to reports of a serious house fire on Kingsdale Drive, Bradford.
“A woman and three children managed to escape the property and were taken to hospital for treatment. Their injuries are not life-threatening.
“A fourth child was found inside the address and was sadly pronounced deceased at the scene,” police added.
“A scene is currently in place at the address and police are working with the fire investigators to establish the exact cause of the fire.”
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Rishi Sunak has urged Tories to stick with his leadership despite the Conservatives’ shock defeat in the West Midlands mayoral election, which capped a dire few days of results for the party.
The margin of victory was a cruelly tight 1,508 votes, and compounded Conservative disappointment as it followed another loss to Sadiq Khan in London, who secured a record-breaking third term as the capital’s mayor.
“People across the country have had enough of Conservative chaos and decline and voted for change with Labour. Our fantastic new mayor Richard Parker stands ready to deliver a fresh start for the West Midlands,” Sir Keir said.
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7:02
‘Devastated’ Andy Street refuses to blame Sunak after West Midlands defeat
However, in an effort to win back those who had deserted his party over Labour’s stance on Gaza, he added: “I say directly to those who may have voted Labour in the past but felt that on this occasion that they couldn’t that across the West Midlands we are a proud and diverse community.
“I have heard you. I have listened. And I am determined to meet your concerns and to gain your respect and trust again in the future.”
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Labour suffered losses to independents and George Galloway’s Worker’s Party of Britain in areas with large Islamic populations as a result of the war between Israel and Hamas.
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3:02
Starmer speaks at East Midlands victory rally
But the party virtually swept the mayoral elections board across England, winning in Liverpool, South Yorkshire, West Yorkshire, and in Greater Manchester, where Andy Burnham returned to power.
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The Tees Valley was the only remaining splash of blue left on the mayoral election map, where Lord Ben Houchen managed to cling to power despite a huge 14.1-point swing to Labour.
Lord Houchen’s victory was also mired by allegations he had sought to distance himself from Rishi Sunak and the Conservative Party at large during his campaign.
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Sadiq Khan re-elected as London Mayor
Losing Mr Street, who is widely respected in the Tory Party and had an impressive track record of bringing investment into the West Midlands, is a body blow to the prime minister.
Despite the drubbing, Mr Sunak urged his party to stick with his leadership and his plan for government.
In a statement, he said: “It’s been disappointing of course to lose dedicated Conservative councillors and Andy Street in the West Midlands, with his track record of providing great public services and attracting significant investment to the area, but that has redoubled my resolve to continue to make progress on our plan.
“So we will continue working as hard as ever to take the fight to Labour and deliver a brighter future for our country.”
However, Suella Braverman, the former home secretary, was quick to lay the blame for Tory losses firmly at the door of Number 10.
But she said ousting Mr Sunak “won’t work”, adding: “The hole to dig us out of is the PM’s, and it’s time for him to start shovelling.”
She urged him to adopt “strong leadership, not managerialism” on tax, migration, small boats, and law and order.
But Mr Street took a different view, encouraging the party not to veer to the right.
Asked if he is worried the party is drifting to the right and over-emphasising the threat from Reform UK while “ignoring other voters”, the outgoing mayor told Sky News: “I would definitely not advise that drift.
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“The psychology here is really very straightforward, isn’t it? This is the youngest, most diverse, one of the most urban places in Britain, and we’ve done, many would say, extremely well over a consistent period,” Mr Street said.
“The message is clear: winning from that centre ground is what happens.”
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1:13
‘We will give this region a fresh start’ – Labour’s Richard Parker
Results are in from 106 of the 107 councils in England that held elections on 2 May, and Labour has won 1,140 seats, an increase of more than 200.
The Liberal Democrats beat the Tories into second place, winning 521 seats, up nearly 100.
The Tories were just behind on 513 seats, down nearly 400.
Tory incumbent Andy Street has suffered a shock defeat to Labour in the West Midlands mayoral election after a partial recount was ordered.
Labour’s Richard Parker beat Mr Street by just 1,508 votes – 0.25% – to deliver a major blow to Rishi Sunak in the key electoral battleground after a hammering in the local elections.
With the race neck-and-neck, in the end it came down to the results in one borough – Labour-supporting Sandwell.
“This is the most important thing I will ever do,” Mr Parker said in his acceptance speech.
“I promise you that I will deliver jobs,” he added.
He told Sky News he would take buses “back into public control” and deliver the “largest programme of social housing we’ve had in this region for more than 40 years”.
And he thanked his predecessor, who he said had “led this region through a number of great challenges and you deserve great credit for that”.
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Mr Street told Sky News he was “personally devastated”, had “put my all into this”, and “genuinely believed we were making real progress across the region”.
He said it was “my campaign, totally”, adding: “I’m not going to try to push responsibility anywhere else. There’ll be no sloping shoulders from me.”
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He wished his successor “all strength and wisdom”.
Labour leader Sir Keir Starmer said it was a “phenomenal result” and “beyond our expectations”.
He added: “People across the country have had enough of Conservative chaos and decline and voted for change with Labour.
“My changed Labour Party is back in the service of working people, and stands ready to govern.”
Ellie Reeves, Labour’s deputy national campaign co-ordinator, said it was a “significant victory”.
She added: “Right across the country people have voted for change and the message is clear – it’s time for a general election and a Labour government to get our country’s future back.”
These results will increase pressure on the prime minister, who had been hoping for a repeat of the success enjoyed by Conservative Ben Houchen who held on as the mayor of Tees Valley.
Sam Coates, Sky News’s deputy political editor, said he had seen messages from Conservative MPs’ WhatsApp group.
One from former cabinet minister Simon Clarke, whom Coates said “wants Rishi Sunak to leave”, said: “These results are awful and should be a massive wake-up call.
“If we fight the same campaign in a few months [in the general election] we’ll get the same outcome or rather worse.
“Reform UK standing more candidates will cause greater damage.”
The loss of either the Teesside or West Midlands mayoralties would give Tory rebels who want to change leader a “huge amount of fuel”, former Scottish Conservative leader Ruth Davidson said in the Electoral Dysfunction podcast.
Mr Street, who was seeking a third term in office, sought to distance himself from the Conservative brand during his campaign and instead ran on a personal platform.
Sky News recently revealed that Mr Street was sending out election literature with an endorsement from former prime minister Boris Johnson which urged people to “forget about the government”.
His campaign website also made no mention of Mr Sunak on its homepage and was coloured in green rather than Conservative blue.