Boxing hero Manny Pacquiao has overcome disruptions from typ-hoons and landslides while training in the Philippines to be in ideal shape ahead of his big bout with Miguel Cotto, his trainer said.

"He is right where I want him to be, perfect," trainer Freddie Roach told reporters on Friday after the six-time world-champion completed a heavy workout in a Manila gym.

Pacquiao will head to the United States this week after an intense five weeks of training in his home country, during which more than 1,000 people died in natural disasters.

Pacquiao was even forced to move camps from the cool mountain resort of Baguio to the sweaty capital of Manila after storms claimed hundreds of lives in and around the hill station, then a typhoon threatened more damage there.

But Roach insisted the disasters had not impacted his 30-year-old protege, who stunned the world with victories over American great Oscar de la Hoya last year and Britain's Ricky Hatton in May.

Pacquiao is a deeply religious man and a hero to virtually everyone in the Southeast Asian nation. But Roach said Pacquiao had remained completely committed to his training despite the disasters going on around him.

"One hundred per cent. No problem at all. It's been a really good training camp. He's been focused from day one, throughout," he said.

Pacquiao will travel to Los Angeles for two weeks of training ahead of his November 14 fight against Cotto, the 27-year-old Puerto Rican who is looking to snatch the Filipino's status as best pound-for-pound fighter in the world.