Garrett McNamara surfs world record 100-foot wave in Portugal (VIDEO)

American Garrett McNamara broke his own world record when he surfed a 100-foot wave off the coast of Portugal.

Once confirmed by experts, McNamara will beat his own record of surfing a 78-foot wave in November 2011, reported BBC News. The giant wave that the Hawaiian surfed on Tuesday was formed above an underwater canyon known for being the world's biggest wave generator.

When McNamara set the initial record in 2011, he was accompanied by fellow surfers Andrew Cotton and Alastair Mennie, according to The Guardian. Mennie said at the time that the conditions were "perfect" for his friend to take on the wave.

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"Everything was perfect, the weather, the waves," Mennie said. "Cotty and I surfed two big waves of about 60 feet and then, when Garrett was ready came a canyon wave of over 90 feet. The jet ski was the best place to see him riding the biggest wave I've ever seen. It was amazing. Most people would be scared but Garrett was controlling everything in the critical part of the wave. It was an inspiring ride by an inspiring surfer."

McNamara started surfing when his family moved to Hawaii from Pittsfield, Massachusetts when he was 11 years old, noted NBC News.

"It's like riding a moving mountain," McNamara told NBC's TODAY after he broke the last world record in 2011.