Led by higher exports amid a weaker yen and lower oil imports, Japan logged a current account surplus for the seventh consecutive month in January, with the balance standing at ¥61.4 billion, ($509 million), the government said Monday in a preliminary report.

The balance, which reverses a deficit of ¥1.59 trillion from the year before, marked Japan's first surplus in the month since 2011, the Finance Ministry said. The size of the improvement was the largest since comparable data became available in 1985.

Exports grew 15.3 percent from a year earlier to ¥6.33 trillion, while imports fell 8.9 percent to ¥7.20 trillion, pushing down the goods trade deficit by ¥1.54 trillion to ¥864.2 billion, the ministry said.