Saturday was the hottest day in France since the infamous heatwave of 2003

Europe sweltered through an intense heatwave on Sunday, with soaring temperatures contributing to forest fires, the closure of nuclear plants and even a threat to the Netherlands' supply of potato fries, although some countries experienced a slight respite.

Here is a roundup:

Spain: Fire under control

A top temperature of 42 degrees Celsius (107 degrees Fahrenheit) was forecast in the southwest region of Extremadura on Sunday, where a wildfire in San Vicente de Alcantara has been brought under control by firefighters, the local fire service said.

The mercury had reached 44 C in the country's south on Saturday, the Spanish Meteorological Agency said.

The rise in temperatures has already claimed the lives of three people who died of heatstroke this week.

Portugal: 45 C forecast

The mercury was expected to hit 45 C in some parts of Portugal on Sunday, a day after weather records in several cities were broken on Saturday, the hottest day for 18 years according to the Portuguese Institute for Sea and Atmosphere (IPMA)

A temperature of 46.8 C was recorded north of Lisbon on Saturday, although nowhere reached the nationwide record of 47.3 C registered in the southern village of Amareleja in 2003.

Faced with the heatwave the national rail company admitted that there had been air conditioning problems on some trains and halted the sale of tickets for certain routes, especially those which cross areas where the temperatures are most ferocious.

A female orangutan hides from the blazing sun in Madrid, Spain

A forest fire continued to rage on two fronts in Monchique in the country's south on Sunday, with 800 firefighters, supported by 12 water-dropping planes and helicopters were working to put it out.

Another forest fire, in central Estremoz, has left six people wounded, two in serious condition.

France: 'Recklessness' warning

In France, 67 out of 101 departments were on heatwave alert with temperatures in the south of the country expected to again peak near 40 C.

Saturday was the hottest day in the country since the infamous heatwave of 2003, in which thousands of mainly elderly people died.

A woman pulls two horses as smoke columns rise from a wildfire raging in Alvega, Portugal

The emergency services complained that, despite public health warnings about keeping cool and hydrated, there was "still quite a lot of recklessness"—citing the example of an elderly man in Lyon who suffered heart problems while mowing his lawn under the merciless afternoon sun.

The heat has also caused air pollution levels to soar. To try to clear the air, the city of Paris has banned owners of the most polluting categories of vehicles from using their cars on Monday. In the east of the country, authorities have lowered the speed limit by 20 kilometres/hour to try dispel the smog.

Italy: Tornado spotted

Several thunderstorms flooded streets in Sicily and Sardinia in the south of Italy on Sunday, cooling down a the heatwave that has caused traffic problems on the country's busiest summer weekend on the roads.

Tourists on the Italian island of Pantelleria, near Tunisia, said they had seen a tornado off the coast on Saturday.

French emergency services complained that, despite public health warnings about keeping cool and hydrated, there was "still quite a lot of recklessness"

Media had previously reported on Saturday that a woman had died from apparent heatstroke on a beach in the northwestern Liguria region.

Germany: Rain brings relief

Isolated showers and thunderstorms brought some relief from the heat in parts of Germany this weekend, particularly in the south. However temperatures are expected to climb again to as high as 39 C in the east on Wednesday.

Sweltering Germans have been flocking to open air swimming pools across the country, and many pools are expecting record visitor numbers this summer, DPA news agency reported.

A woman cools herself in a fountain near the Ara Pacis monument in central Rome

Britain: Hot until Tuesday

The heat also slightly abated in Britain on Sunday, with the high of just over 30 degrees expected in the south of England, according to the Met Office, which predicted the heatwave would continue until Tuesday.

Public Health England told those in the southeast to stay in the shade and drink lots of water.

Netherlands: Shortage of fries?

While the temperature was down to a near-seasonal 25 C in the Netherlands on Sunday, the country's drought continues to wreak havoc on crops.

People walk in a fountain in front of the Berlin Cathedral as the heatwave in Europe continues

Farmers are working night and day to save what they can, the Dutch broadcaster NOS reported, with potato and corn yields hit particularly hard.

Producers have warned that a potato shortage could affect the supply of fries, a Dutch favourite.

© 2018 AFP