BERLIN, Sept 21 (Reuters) - The Swiss National Bank will not hesitate to raise interest rates again to keep inflation below its 2% target, Chairman Thomas Jordan said on Thursday, after the central bank unexpectedly kept its interest rate on hold.

"The situation allows us to wait for now and review at the next monetary policy assessment whether the monetary policy measures we have taken to date are sufficient to keep inflation within the price stability range on a sustainable basis," said Jordan in comments he was due to make after the SNB's latest interest rate decision.

"We will not hesitate to tighten our monetary policy further if necessary in order to keep inflation below 2% on a sustainable basis." (Reporting by John Revill, Editing by Rachel More)