The growth rate was 2.1 percentage points higher than July, reports Xinhua.
Imports also rose in this month, gaining 7 percent to USD 162.09 billion, the general administration of customs said in a statement.
The total foreign trade grew 7.1 percent to reach USD 352.7 billion in August as compared to the same month in 2012, said the statement.
The figures also revealed the trade surplus widened by 8.4 percent year-on-year to USD 28.52 billion, the highest since January this year.
Zhang Liqun, a researcher at the Development Research Centre of the State Council, said the improvement in exports was related to a stable yuan and government policies.
Chinese authorities have exempted all outbound goods, transport vehicles and containers from inspection and quarantine fees (at customs) from Aug 1 to Dec 31 this year.
In August, imports and exports with the European Union, China's largest trade partner, rose 3.2 percent, while those with the US, China's second-largest trade partner, rose 9.2 percent.
Trade with ASEAN members increased 13.3 percent, even though its trade with Japan shrank 6 percent during the period.
The data released Sunday also showed exports of electronics and machinery products grew by 6.7 percent to reach USD 106.45 billion in August, accounting for 55.9 percent of total exports.
--IANS (Posted on 08-09-2013)