Female elephant Phang Pha uses a water hose by herself to cool off at the Berlin Zoo as a heatwave is expected to reach the city, in Berlin, Germany June 25, 2019.

A man cools off at a fountain in downtown Rome as a heatwave hits Italy, June 25, 2019.

A woman helps her dog to cool off in a fountain on a hot summer day in Brussels, Belgium, June 24, 2019.

People brave heat to attend the general audience in St. Peter's Square, at the Vatican, June 26, 2019.

A member of the clergy holds an umbrella ahead of the general audience in St. Peter's Square, at the Vatican, June 26, 2019.

A girl enjoys a cool breeze at a fountain in Berlin, Germany, June 26, 2019.

People cool off on a rocky beach as a heatwave hits Europe, in Sliema, Malta, June 26, 2019. Picture taken with long exposure.

Trees burn during a forest fire near Maials, west of Tarragona, Spain, June 27, 2019.

A woman swims in the Serpentine lake in Hyde Park, London, as warm weather arrives across Britain, June 27, 2019.

Festival goers enjoy the hot weather during Glastonbury Festival at Worthy farm in Somerset, Britain June 27, 2019.

A man tries to cool himself with a fan in central Madrid, Spain, June 27, 2019.

A wildfire is seen near the city of Toledo, Spain June 28, 2019.

Firefighters are seen near wildfires in Alto de la Centenera, near Cuevas del Valle, Spain June 29, 2019 in this still image taken from a video obtained by social media. Christopher Moreira via REUTERS

People enjoy sunbathing at a beach by the Baltic Sea in Travemuende, Germany, June 30, 2019.

People cool off in water fountains in Nice as a heatwave is expected in much of the country, France, June 24, 2019.

People sunbathe at the Andre Citroen park in Paris as a heatwave hit much of the country, France, June 25, 2019.

Members of the clergy hold umbrellas ahead of the general audience in St. Peter's Square, at the Vatican, June 26, 2019.

A woman rests in the shadow on a hot summer day in central Kiev, Ukraine June 26, 2019.

People cool off on the Miroir d'Eau (Mirror of Water), a public art piece on the quay of the Garonne river as France prepares to swelter in record high June temperatures, in Bordeaux, France June 26, 2019.

Peolpe try to cool on pedalos on Lake Leman during a heatwave in Lausanne, Switzerland, June 27, 2019.

A woman cools off in a park as a heatwave hits much of the country, in Valenciennes, France, June 28, 2019.

People cool off in the sea in Marseille as a heatwave hits much of the country, France, June 28, 2019.

People stand in a small lake next to a beer garden in the English Garden in Munich, Germany, June 30, 2019.

A tourist cools herself in a fountain as she visits the archaeological site of the Temple of Zeus in Athens, Greece July 4, 2019.

A woman drinks water during sunset as a heatwave hits France, in Cagnicourt near Cambrai, France, June 25, 2019.

People cool off in the Trocadero fountains across from the Eiffel Tower in Paris as a heatwave is expected in much of the country, France, June 24, 2019.

A woman cools off at a fountain in downtown Rome as a heatwave hits Italy, June 25, 2019.

A woman swims in a pool at a public bath in Berlin, Germany, June 26, 2019.

Tourists walk down the CIty Gate Steps as a heatwave hits Europe, in Valletta, Malta, June 26, 2019.

Teenagers play in a fountain during a heatwave in Lausanne, Switzerland, June 27, 2019.

A helicopter drops water over a wildfire near the city of Toledo, Spain June 28, 2019.

Boys jump in the water at the Snail on Amager in Copenhagen, Denmark June 25, 2019. Nikolai Linares/Ritzau Scanpix/via REUTERS

A girl plays at a fountain on a hot summer day in central Kiev, Ukraine June 26, 2019.

A woman cools off near a fountain on a hot summer day in Brussels, Belgium, June 24, 2019.

Tourists shade from the heat under umbrellas while they visit La Mancha windmills during a heatwave in Consuegra, central Spain, June 27, 2019.

Children play in a public fountain during sunny summer weather in Zurich, Switzerland June 24, 2019.

A woman swims in a pool at a public bath in Berlin, Germany, June 26, 2019.

People enjoy boat rides at Retiro Park in Madrid, Spain, June 26, 2019.

Tourists seek shelter from the sun while others walk by with an umbrella, as a heatwave hits Europe, in Valletta, Malta, June 26, 2019.

A bear seeks relief from heat as it eats iced food at a zoo in Rome, Italy, June 27, 2019.