Japan's core private-sector machinery orders rose a seasonally adjusted 6.3 percent from the previous month to 1.035 trillion yen in April, after a 3.6 percent fall in March, the Cabinet Office said Thursday.

It was the highest month-on-month gain since October, when key orders grew 7.7 percent from the previous month, it said.

"The trend in machinery orders is weak, and we will be carefully watching future movements," said Yoshihiko Senoo, a senior official at the Cabinet Office's Economic and Social Research Institute, explaining why the government's assessment on the machinery orders data remains unchanged from the previous month. "A single month of favorable data is not enough to advance upward our assessment."