"Let me start by saying I feel like an a------ right now," Ocean said in a statement sent out by Way Out West organizers. "But a tough decision had to be made in regard to my schedule over the next months, and the casualties of that decision include my appearances at upcoming festivals in Europe and my opening slot on the European leg of the Coldplay world tour."
"Sorry as f---, I'll be back if you'll have me."
Among the "casualties" are gigs at Finland's Flow Festival in Finland, Belgium's Pukkelpop in Belgium, Britain's V Festival, the Rock En Seine festival in Paris and the famed Isle of Wight Festival, according to MTV News.
He didn't elaborate, however, on the reason for his cancellations. Ocean had been scheduled to perform that night at the Way Out Festival on Saturday; he had cut short a concert at a Norwegian festival Friday after just four songs, apparently due to vocal problems, Billboard.com reported.
Ocean, a protege of Kanye West's, made headlines in early July by coming out publically to detail a relationship he previously had with another man - a courageous act in the often homophobic world of R&B.
"4 summers ago, I met somebody," he wrote on his Tumblr page on Independence Day. "I was 19 years old. He was too. We spent that summer, and the summer after, together."
"By the time I realized I was in love, it was malignant. It was hopeless. There was no escaping, no negotiating with the feeling. No choice. It was my first love, it changed my life."
His revelation did little to harm the singer's record sales: Ocean's major label debut, "Channel Orange," sold over 131,200 copies in its opening week last month, putting it at No. 2 on the Billboard Top 200 Album chart.