Theppotsavam, or float festival, is a Hindu

Hindu

Hindu refers to an identity associated with the philosophical, religious and cultural systems that are indigenous to the Indian subcontinent. As used in the Constitution of India, the word "Hindu" is also attributed to all persons professing any Indian religion...

 religious festival carried out in Hindu temples in parts of South India

South India

South India is the area encompassing India's states of Andhra Pradesh, Karnataka, Kerala and Tamil Nadu as well as the union territories of Lakshadweep and Pondicherry, occupying 19.31% of India's area...

, mainly Tamil Nadu

Tamil Nadu

Tamil Nadu is one of the 28 states of India. Its capital and largest city is Chennai. Tamil Nadu lies in the southernmost part of the Indian Peninsula and is bordered by the union territory of Pondicherry, and the states of Kerala, Karnataka, and Andhra Pradesh...

 during the month of Chitthirai or Chaitra. As a part of this festival, the principal idol of the temples is decorated and taken in procession through the tank of the temple.

Some of the temples where the float festival is celebrated are:

• Tirumala Venkateswara Temple
  Tirumala Venkateswara Temple
  Tirumala Venkateswara Temple ), is a Hindu temple in the hill town of Tirumala, near Tirupati in the Chittoor district of Andhra Pradesh, South India. It is around from Chennai, from Hyderabad, and from Bangalore....
  
  
• Meenakshi Amman Temple
  Meenakshi Amman Temple
  Meenakshi Sundareswarar Temple or Meenakshi Amman Temple or Tiru-alavai is a historic Hindu temple located in the south side of river Vaigai in the temple city of Madurai, Tamil Nadu, India...
  
  , Madurai
  Madurai
  Madurai is the third largest city in the Indian state of Tamil Nadu and one of the oldest continuously inhabited cities in the world. It served as the capital city of the Pandyan Kingdom. It is the administrative headquarters of Madurai District and is famous for its temples built by Pandyan and...
  
  
• Samayapuram Mariamman Temple
  Samayapuram Mariamman Temple
  Samayapuram Mariamman Temple is a Hindu temple in Samayapuram near Trichy / Tiruchirappalli in Tamil Nadu, India. The main deity, Samayapurathal or Mariamman is made of sand and clay like many of the traditional Mariamman deities, and hence unlike many other Hindu deities there are no abhishekams ...