Due to Portuguese colonial influence, Sri Lanka has had some affinities with Brazil, e.g. the Catholic Church and the influence the Portuguese had on language and culture particularly on music and Sri Lankan cuisine.
Establishment of the Rio Buddha-vihara by the Brazil Buddhist Society (Sociedade Budista do Brasil) which was officially founded in 1967, by members of the Theosophical Society of Brazil (TSB) to bring into knowledge all the Buddhist Schools and the culture of Buddhist countries in the world, was an significant millstone of Sri Lanka´s relations with Brazil in the context of cultural and historical similarities between the two countries under the Portuguese heritage as well as historical links associated with the Theravada Buddhism. The Theosophical Society of Brazil (TSB) is determined to promote philosophical principles of Colonel Henry Steel Olcott who is well known in Sri Lanka for his immense contribution to the independence movement of the country and the Theravada Buddhist tradition during the British colonial period in Ceylon.
Over the years the Rio Buddhavihara had hosted a number of Sri Lankan Buddhist monks who practiced Theravada Buddhism including Venerable Bhikkhu Anuruddha Thera and Ven. Piyadassi Maha Thera (1967-1972), Venerable Bhikkhu Shanti Bhadra Thera (1975-1977), Venerable Dr. Puhulwella Vipassi Nayaka Thero (1986-2006). However, with the passing away of Dr. Puhulwella Vipassi Nayaka Thero on 26th October 2006 at the City Hospital in Birmingham, London after a brief illness, replacement of a learned Buddhist monk from Sri Lanka for Ven Vipasi Nayaka Theoro has not taken place.
- Annual Vesak Day celebrations at Shin Buddhist Pure Land Temple
The Embassy of Sri Lanka in Brasília, Brazil, celebrated its annual Vesak Day celebrations under the patronage of Reverent Sato, Chief Incumbent of the Temple Shin Buddhist Pure Land, in Brasília on 18th May 2019. The celebratory event was officiated with the sounding of the temple bell by visiting dignitaries that included Ambassadors of Thailand, India, Malaysia, Sri Lanka and Vietnam, Bishop Don Lenardo Steiner from National conference of Bishops of Brazil (CNBB), Pastor Wellinton Pereira, Representative of CONIQ (National Council of Christian Churches of Brazil) and Representative of Governor of Brasilia