The outspoken politician also revealed that a series of "coincidences" have led him to be booked to talk at Mr Trump's rally.
"But I do not fall into the trap that Obama fell into, I'm not going to tell you what to do, I'm not going to endorse anybody. I am here to tell the Brexit story". Americans will have a chance to vote for trade, immigration and foreign policies that put our citizens first.
He added: "I've been called "over the top" once or twice, but I think some of Donald Trump's comments are pretty out there.... That is my position".
Trump has voiced protectionist views on trade, calling deals like NAFTA unfair to the U.S. While he's evinced a strongman stance on fighting terror, he has also said he would limit U.S. involvement in North Atlantic Treaty Organisation.
"I shouldn't do that", he said. I recognised the level of interest in Brexit was pretty high here in the US.
"I think we should start with Hillary Clinton". But he said on radio: "Hillary Clinton is the establishment, status quo candidate".
"They all said it couldn't happen - the media, the politicians, the businesses".
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Mr Trump was previously a lukewarm supporter of LGBT rights, but has changed his stance repeatedly during the campaign in a bid to appeal to the broad Republican base.
"They're angry over borders, they're angry over people coming into the country and taking over, nobody even knows who they are", he said.
"They shook the world when they did so and that's what's gonna happen in November when Donald Trump is elected president", he said.
Mr Trump, who is trailing his rival Hillary Clinton in the opinion polls, backed the UK's exit from the EU.
By contrast, Mr Farage has said he believed Barack Obama was one of the reasons for Britons' voting to leave.
He said he had been invited to the state by Governor Phil Bryant, whom he had met by "coincidence" when attending the Republican National Convention. "Without him we wouldn't have won the referendum". "He was very helpful". The UK would be at the "back of the queue" in any trade deal with the United States, he warned. She has no sense of markets and such bad judgment.
But for all intents and purposes, what Farage said next might as well have amounted to full-throated support of the billionaire businessman's candidacy.
