Severe flooding has killed more than 1,300 people in Pakistan since mid-June, officials said, and by the end of August more than a third of the country was underwater, according to satellite images from the European Space Agency.

At least 33 million people have been affected by the disaster, said Pakistan's Minister for Climate Change Sherry Rehman. She called the floods "unprecedented" and "the worst humanitarian disaster of this decade."

She highlighted in particular the impact on the south of the country, adding that "maximum" relief efforts are underway.

An 18-year-old woman displaced by the flooding looks after her 1-day-old baby boy at a hospital in Sehwan, Pakistan, on Wednesday, September 7.
An 18-year-old woman displaced by the flooding looks after her 1-day-old baby boy at a hospital in Sehwan, Pakistan, on Wednesday, September 7.
Akhtar Soomro/Reuters
A herd of sheep passes through floodwaters in Nowshera, Pakistan, on Tuesday, September 6.
A herd of sheep passes through floodwaters in Nowshera, Pakistan, on Tuesday, September 6.
Fayaz Aziz/Reuters
Children sit on a charpai in the Jaffarabad district on August 31.
Children sit on a charpai in the Jaffarabad district on August 31.
Fida Hussain/AFP/Getty Images
People wade through floodwaters in Charsadda, Pakistan, on August 31.
People wade through floodwaters in Charsadda, Pakistan, on August 31.
Muhammad Sajjad/AP
Displaced people take refuge in a school in Jacobabad, Pakistan, on August 30.
Displaced people take refuge in a school in Jacobabad, Pakistan, on August 30.
Akhtar Soomro/Reuters
Residents of Kyhber Pakhtunkhwa gather beside a road damaged by flooding on August 29.
Residents of Kyhber Pakhtunkhwa gather beside a road damaged by flooding on August 29.
Abdul Majeed/AFP/Getty Images
A displaced child sleeps under a mosquito net at a makeshift camp in Khyber Pakhtunkhwa on August 29.
A displaced child sleeps under a mosquito net at a makeshift camp in Khyber Pakhtunkhwa on August 29.
Abdul Majeed/AFP/Getty Images
This satellite image shows the scale of the flooding along the banks of the Indus River in Rajanpur, Pakistan, on August 28.
This satellite image shows the scale of the flooding along the banks of the Indus River in Rajanpur, Pakistan, on August 28.
Maxar Technologies/Reuters
People wade through floodwaters in Pakistan's Mirpur Khas district on August 28.
People wade through floodwaters in Pakistan's Mirpur Khas district on August 28.
Ahmed Ali/Anadolu Agency/Getty Images
Pakistani Army soldiers distribute food following a flash flood in Hyderabad, Pakistan, on August 28.
Pakistani Army soldiers distribute food following a flash flood in Hyderabad, Pakistan, on August 28.
Ahmed Ali/Anadolu Agency/Getty Images
Flooded land is seen in Mingora, a town in Pakistan's northern Swat Valley, on August 28.
Flooded land is seen in Mingora, a town in Pakistan's northern Swat Valley, on August 28.
Abdul Majeed/AFP/Getty Images
Volunteers load relief food bags on a truck in Karachi, Pakistan, on August 28.
Volunteers load relief food bags on a truck in Karachi, Pakistan, on August 28.
Rizwan Tabassum/AFP/Getty Images
Displaced people take refuge along a highway after fleeing from their flood-hit homes in Pakistan's Charsadda district on August 28.
Displaced people take refuge along a highway after fleeing from their flood-hit homes in Pakistan's Charsadda district on August 28.
Abdul Majeed/AFP/Getty Images
Displaced people wade through a flooded area in Peshawar, Pakistan, on August 27.
Displaced people wade through a flooded area in Peshawar, Pakistan, on August 27.
Hussain Ali/Anadolu Agency/Getty Images
A man carries his sick daughter along a road damaged by floodwaters in Pakistan's northern Swat Valley on August 27.
A man carries his sick daughter along a road damaged by floodwaters in Pakistan's northern Swat Valley on August 27.
Abdul Majeed/AFP/Getty Images
A man swims in floodwaters while heading for higher ground in Charsadda on August 27.
A man swims in floodwaters while heading for higher ground in Charsadda on August 27.
Fayaz Aziz/Reuters
Flood-affected people stand in a long line for food distributed by Pakistani Army troops in Rajanpur on August 27.
Flood-affected people stand in a long line for food distributed by Pakistani Army troops in Rajanpur on August 27.
Asim Tanveer/AP
A flooded area is seen from atop a bridge in the Charsadda district on August 27.
A flooded area is seen from atop a bridge in the Charsadda district on August 27.
Abdul Majeed/AFP/Getty Images
A man helps children navigate floodwaters using a satellite dish in Balochistan, Pakistan, on August 26.
A man helps children navigate floodwaters using a satellite dish in Balochistan, Pakistan, on August 26.
Fida Hussain/AFP/Getty Images
Volunteers prepare food boxes to distribute to flood victims in Peshawar on August 26.
Volunteers prepare food boxes to distribute to flood victims in Peshawar on August 26.
Fayaz Aziz/Reuters
A family carries their belongings through floodwaters in Jamshoro, Pakistan, on August 26.
A family carries their belongings through floodwaters in Jamshoro, Pakistan, on August 26.
Yasir Rajput/Reuters
People walk through floodwaters in Dagai Mukram Khan, Pakistan, on August 26.
People walk through floodwaters in Dagai Mukram Khan, Pakistan, on August 26.
Hussain Ali/Anadolu Agency/Getty Images
A woman cooks food for her flood-affected family at a makeshift camp in Nawabshah, Pakistan, on August 25.
A woman cooks food for her flood-affected family at a makeshift camp in Nawabshah, Pakistan, on August 25.
Asif Hassan/AFP/Getty Imagse
Rescue workers carry out an evacuation operation for stranded people in Rajanpur on August 25.
Rescue workers carry out an evacuation operation for stranded people in Rajanpur on August 25.
Shahid Saeed Mirza/AFP/Getty Images
Villagers take shelter at a makeshift camp in Pakistan's Jaffarabad district on August 24.
Villagers take shelter at a makeshift camp in Pakistan's Jaffarabad district on August 24.
Fida Hussain/AFP/Getty Images
Workers load sacks of relief goods for flood victims in Balochistan on August 5.
Workers load sacks of relief goods for flood victims in Balochistan on August 5.
Fayaz Aziz/Reuters
A boy wades through his flooded house in Karachi on July 26.
A boy wades through his flooded house in Karachi on July 26.
Rizwan Tabassum/AFP/Getty Images