HAVANA, May 12 (Reuters) - Cuba will announce new prices for fuel at the pump beginning on May 15 in order to better reflect the actual costs of importing gas and diesel, the Ministry of Finance and Prices said on Tuesday.

The announcement comes after two weeks in which fuel has all but disappeared from state-run gas stations amid a U.S. fuel blockade on the island that has largely strangled supply and led to strict rationing.

The Cuban government said some avenues for imports continue to exist despite the blockade but said prices would vary according to the provider, shipping costs, routes, insurance, risks and international market price fluctuations.