Asked whether a recession was inevitable, Soros said: "I think we are definitely in for a slowdown that I think will be a bigger slowdown than (Fed Chairman Ben) Bernanke is seeing."
Famous for his speculative attack on the Bank of England that made him more than $1 billion, Soros declined to nominate which currencies are more vulnerable currently. He also declined to comment specifically on the dollar.
"I know exactly where the currencies are going to but I'm not going to tell that to you," he told the audience.
Last week, investment guru Jim Rogers, who co-founded the Quantum Fund with Soros in the 1970s, recommended selling the dollar as well as U.S. investment banks and U.S. housing stocks.
Soros said that, for now, China is the "absolute winner" in economic terms, and will continue to see its economy soaring during the next few years.
"Now it is going through this fantastic transformation but in 10 years time I think you may well have a financial crisis in China," he said.