The Ambubachi Puja at Kamakhya Temple would be held from June 22 to June 26. A Mela is held every year during the period of Ambubachi Puja, during which lakhs of devotees gather at the temple. It is also known as Ambubasi festival.

The Ambubachi Puja marks the yearly menstruation course of mother Kamakhya. It is believed that during the monsoon rains the creative and nurturing power of the ‘menses’ of Mother Earth becomes accessible to devotees at this site during the mela.

The four day period is very auspicious for tantric cults, who observe tough penance to gain Siddhis at this time.

Every year lakhs of pilgrims, starting from Sadhus to householders, from all over India, come to Guwahati to observe this festival. These include Sannyasins, black clad Aghoras, the Khade-babas, the Baul or singing minstrels of West Bengal, intellectual and folk Tantriks, Sadhus and Sadhvis with long matted hair etc. Even foreigners from abroad come to seek blessings of mother Kamakhya.