This is the spectacular moment a homemade spinning helix rocket was launched at a festival in Thailand.

Footage shows the DIY pyrotechnic flying towards the sky amid excited crowds in Kalasin province, Thailand on May 19.

The helix left a spiralling trail of grey smoke below as it flew thousands of feet into the sky.

One of the festival-goers Nadchada Ajangpromma said: ‘It was so amazing. The person who made it really put effort and time into it.'

The ritual was performed during the Bun Bang Fai Rocket festival, which is celebrated in several provinces in the northeastern part of the country.

In Thai, ‘bun' means ‘merit, ' and ‘bang' means bamboo, which is used to make rockets. ‘Fai' means ‘fire' representing gunpowder being stuffed into the rockets.

According to local beliefs, the rockets are launched skyward as an offering to Phaya Thaen, the Buddhist deity associated with rain.

The event happens each year at the end of the hot season when temperatures reach 40 degrees Celsius.

Locals believe firing rockets into the clouds triggers the much-needed rains for their rice crops. However, the resulting rain is likely due to the onset of the monsoon season.