"If I am out on a hot day, minding my own business with my family, I have been known to wear a bathing suit from time to time," the 45 year old said Monday on "Live with Kelly & Ryan."
"It is awfully hot right now, don't you think?" Ripa joked.
As far as his "sexiest politician alive" status, the father of three said his wife is his harshest critic.
"My wife’s the one who doesn’t believe it," he said. "She’s like, 'Really?' She knows what I look like when I get up in the morning."
On his relationship with United States President Donald Trump, Trudeau said, "We have a good, constructive working relationship and that’s the important part of it. There’s a lot of things we agree on."
"Today is World Environment Day," Trudeau said. "We don’t agree on that because I think there’s a lot of good jobs in the environment that we’re building for, but we both agree that the most important responsibility of a leader is to create good jobs for middle-class people across our countries, and we’re connected on that."
As the son of Joseph Philippe Pierre Yves Elliott Trudeau, the 15th Prime Minister of Canada, Justin said he grew up knowing he was "lucky" that he never felt any pressure from his father to get into politics.
When asked if he secretly wants his children to follow in his footsteps of becoming prime minister, Trudeau said, "definitely not."
"Although I will say," he said, "I have one daughter, and there is something very special about imagining a woman prime minister. I think it’s long overdue. I just don’t think we have to wait that long. I think it should be sooner than that."