Hong Kong's retail sales leapt 7.9% in value in May from a year earlier to HK$33.8 billion ($4.31 billion), the 13th straight month of gains, government data showed on Thursday.

In April, retail sales jumped by a revised 8.7% on the year.

In volume terms, May retail sales surged 4.8% from a year earlier, compared with a revised 6.5% rise in April.

($1 = 7.8437 Hong Kong dollars)