President Akufo-Addo of the NPP defeated his rival John Mahama of the NDC after he polled 51.59 percent of the total valid votes cast.
In total Akufo-Addo had 6,730,413 votes whilst John Mahama polled a total of 6,214,889 of votes.
In a series of tweet, President Buhari congratulated President Akufo-Addo and emphasized on the need to continue working together to achieve shared of goals of security and prosperity for their citizens.
"I congratulate President Akufo-Addo on his re-election for a second term in office. I also commend the people of Ghana on the successful conclusion of the presidential and parliamentary elections - further proof that constitutional democracy has come to stay in West Africa.
"Nigeria and Ghana share close historical and cultural ties, and I look forward to working with President Akufo-Addo to realise our shared goals of peace, security and prosperity for our citizens and for the entire ECOWAS community.
"On behalf of the government and people of Nigeria, I wish President Akufo-Addo a successful new tenure, and peace and stability in his country, as well as improved relations between our two countries."