Nick Dempsey has become the first man to win two windsurfing world titles after securing a gold medal in Brazilian venue Buzios.
The Olympic silver medallist claimed first place ahead of London 2012 champion Dorian Van Rijsselberge of the Netherlands.
The Briton previously won the world championship in front of a home crowd at Weymouth and Portland in 2009.
"This trip has been great preparation for Rio and I think it's going to suit me there," BBC Sport quotes him as saying.
"It's going be slightly lighter in Rio than here, but I'm one of the smaller guys in the fleet so hopefully that will work in my favour."