The money has been given through the global charity Christian Aid.
The floods destroyed homes and in some cases entire villages in the country.
Christian Aid says this is the fourth consecutive year of heavy flooding and thousands of acres of crops have been destroyed.
It stressed how communications have been badly affected as well as structural roads and bridges, electricity and fresh water supplies.
The Pakistani government says at least another 86 people have died and more than half a million people have been affected as glacial melt from the Himalayas has flowed into rivers already full of monsoon rains.
Neill Garvie, Christian Aid's Emergency Programme Manager for Pakistan, said: "The Pakistan Meteorological Department has warned that with heavy rains expected over the next five days, the situation will worsen.
"The authorities have established relief camps on various embankments, but a large number of people remain stranded in flooded areas.
"The communities affected will have lost almost all of their belongings including homes, food stocks, crops and livestock. Priority needs at present include fresh water, emergency shelter, food and medical supplies."
Khyber Pakhtunkhwa in the North West and Sindh Province in the South of the country are the worst affected areas, where it is estimated around 1,000,000 people overall are affected.
Act Alliance, a partner of Christian Aid is working to help alleviate some of the suffering in the worst affected regions.