Vaikathashtami Festival is dedicated towards worshipping Lord Shiva in the form of Shivlinga. The festival is celebrated at the Vaikom Mahadeva Temple in Kerala which is one of the oldest and extremely popular temples of Kerala both from religious and social perspectives.

The festival of Vaikathashtami or Vaikkath Asthami is celebrated in the Malayalam month of Vrischikam (November – December). Lord Shiva, the main deity in the temple appears in three forms in a day – morning he is Dakshinamoorti, noon he is Kiratamurti and in the evening he is Sambhashivan along with Goddess Parvati. The temple of Vaikom Mahadeva is held in very high esteems among the Hindus. The Shivalinga established here is five feet in height, and is believed to have formed during the Treta Yuga.