Japan's wholesale prices in April jumped 10% from the same month a year earlier, data showed on Monday, rising at a record rate as the Ukraine crisis and a weak yen pushed up the cost of energy and raw materials.

The surge in the corporate goods price index (CGPI), which measures the price companies charge each other for their goods and services, marked the fastest year-on-year rise in a single month since comparable data became available in 1981.

The gain followed a revised 9.7% increase in March, and was higher than a median market forecast for a 9.4% increase.