"We have to provide three days' forecast for climbing, and based on these forecast, we will recommend the best time for the Chinese mountaineers and will stay in close contact with them during the expedition," Yang said.

Shao Shiwei, deputy director of the P.R. department of the Beijing Organizing Committee of the Olympic Games (BOCOG) on Wednesday also confirmed that the precise date for the ascent was not fixed because of the bad weather recently.

The Olympic flame was lighted in ancient Olympia, Greece on March 24. After running through 19 countries on its international tour, the torch has arrived in China's Hong Kong. The flame's tour in China includes the Mt. Qomolangma in May and Lhasa, capital of the Tibet Autonomous Region, in June.

The Olympic flame's first trip to the world's highest peak will also be televised. A lantern carrying Olympic flame has already been in the Base Camp.