Flash flooding in Turkey has killed at least 14 people after torrential rain hit two provinces that were devastated by last month's earthquake.

At least five other people were also reported missing, officials and media reports said Wednesday. 

The horror weather has increased the misery for thousands who were left homeless after the devastating 7.8-magnitude quake last month that killed some 52,000 people in the country and in Syria - the region's deadliest in modern times.

Many of those that have died in the flooding had been living in tents and container housing set up across Turkey's quake-hit southeast, according to media reports.

Torrential rains hit the area late on Tuesday and the weather service expects them to last until late Wednesday. 

Shocking footage of the surging water showed helpless victims being dragged away as cars were carried by the water down roads that had turned to streams.

Several people were swept away by the rushing water, which turned streets into muddy rivers in areas hit by last month's.

One man was filmed being helplessly dragged along through the cascading murky water, unable to stop himself as he sailed down a road in the city of Sanliurfa.

Other horror images showed the waters sweeping away cars and flooding temporary housing set up for earthquake victims.

Hundreds of thousands of Turkish quake survivors have been moved into tents and container homes across the disaster region, which covers 11 provinces.

One person was killed in the town of Tut in southeastern Adiyaman province, after surging waters swept away a container home being used to shelter a family of earthquake survivors.

It was later reported that a one-year-old was killed in the disaster. 

Salih Ayhan, the governor of neighboring Sanliurfa province, about 30 miles (50 kilometres) north of the Syrian border, told Turkish television that four people were killed by the floods in his region.

Later, rescuers found five more bodies belonging to Syrian nationals inside a flooded basement apartment in Sanliurfa, the Turkish DHA news agency reported.

Two further deaths were later reported.