The town hosts Nemmara Vallanghy Vela one of the popular annual festival in the state with fireworks as the major attraction.

Nemmara is the entry point to the Nelliampathi hills, which are located at the foothills of Western Ghats.

As of 2001[update], according to the Indian census, Nemmara had a population of 18,244 with 8,888 males and 9,356 females.

[3] The festival is held in the Nellikulangara Bhagavathy Temple, and runs from 3-16 April each year.

It involves friendly rivalry between the villages of Nemmara and Vallangi, as they try to outcompete each other in artistic ceremonies such as Kummattikali, Karivela and a parade of caparisoned elephants.