Cold weather has only increased the plight of displaced Iraqis as temperatures drop to below zero at night.
The Christian relief agency Tearfund is distributing winter clothing to those escaping the fighting in Mosul at the Garmawa IDP Camp in Niewa.
According to Tearfund, thousands have been arriving at the camp every day since the Mosul offensive began in October.
Iraqi troops are attempting to regain control of the ancient city from Islamic State.
Multiple reports from the region have said that IS are using civilians as human shields.
Tearfund was told by 60 year old Ryad that he and his family left everything behind as they ran.
Ryad said: "They killed one of my relatives. When we tried to run away my son was shot two times in the stomach and my granddaughter in the leg. I have many more relatives who are still in Mosul, we do not know what has happened to them.''
Tearfund's Iraq Response Manager, Betsy Baldwin said: "In the last week the temperature in the camps has dropped to zero or -1 degree at night, yet thousands of people are arriving just in T-shirts, having left everything behind.
"For the past few months we have been working to pre-position vital supplies, including cooking stoves, blankets and mattresses and have now started distributing clothes to over 5000 people, to keep them warm as the long winter sets in. More distributions are planned as the cold weather continues."
Tearfund claim to have distributed clothes to around 5,000 people, with more distributions scheduled in the coming weeks.
