AYRSHIRE, Scotland — Donald J. Trump arrived in Scotland just as Britain was deciding to leave the European Union and proclaimed the momentous departure “a great thing” and the subsequent decline of the British pound good for local companies — including his own Turnberry golf course.

Touching down in Scotland on Friday morning to visit his luxury resort and golf course, Mr. Trump, who before the vote had suggested that Britain leave the European Union, took a victory lap of sorts, landing in his “G-TRMP” helicopter and proclaiming, “I said this was going to happen, and I think that it’s a great thing.”

“Basically they took back their country,” Mr. Trump said.

And amid global jitters over Britain’s divorce from the European Union, Mr. Trump reacted with celebration and self-interest, predicting that it would benefit his business and declaring that President Obama contributed to the outcome.

“Look, if the pound goes down, they’re going to do more business,” Mr. Trump said, when asked during a news conference about the referendum’s market ramifications. “When the pound goes down, more people are coming to Turnberry, frankly.”