The second New World Festival of the African Diaspora, a fete of music, dance, painting and drama, will take place Aug. 5-15 in Port-au-Prince, Haiti, according to plans announced yesterday.

Festival coordinator Richard A. Long, a professor of African and African-American Studies at Atlanta University, said the event would focus solely on artists from the United States and Haiti.

"The purpose of the festival," he added, "is to bring the boundless creativity of Afro-Americans into direct contact with their brethren in the Western hemisphere."

The first New World festival was held in 1978 in Brazil. That event, however, was plagued by a lack of financial support from the Brazilian government.

Long said he did not expect similar problems with the upcoming gathering, which is being sponsored by the Haitian Office of Tourism.

"The festival will fit into aim of bringing more and more tourists into Haiti," said Lionel Delatour, second secretary of the Haitian Embassy, who also attended the news conference at Harambee House.

He also said his government has recently opened tourism offices in major cities in the United States, Canada and Europe and is making an effort to eradicate the image of Haiti as a politically repressive nation.

For now, Long said, there is no money for American performers for travel and living expenses. But, he added, his task is to raise funds from government private sources.

The festival, he said, will have slots for 15 to 20 American groups. Besides performances, one of which will be a production of Langston Hughes' "Black Nativity," there will be colloquia devoted to art, culture and life style.

In no way, said lOng, does the New World Festival compete with the World Festival of Black And African Arts, held in Dakar, Senegal, in 1966, and Lagos, Nigeria, in 1977.