ATHENS, July 21 (Reuters) - Greece's current account balance swung into a deficit in May, according to balance of payments figures released by the central bank on Monday.

The deficit stood at 246 million euros from a surplus of 70 million euros in May 2013.

Tourism revenues stood at 1.07 billion euros in May from 1.06 billion euros in the same month in 2013.

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KEY FIGURES (bln euros) 2014 2013

January -0.295 -0.314

February -0.709 -0.684

March -0.044 -1.241

April -1.167 -1.151

May -0.246 0.070

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source: Bank of Greece (Reporting by Renee Maltezou)