Vorderman posted pictures of herself on Instagram dancing in a wetsuit and flipflops on the Welsh beach, and captioned them: "Doing the worst Haka ever on the beach....had to earn my breakfast.
"Huge apologies to @allblacks and all of New Zealand. #paddleboarding #Wales."
The Haka is a traditional dance created by the indigenous Maori people of New Zealand, and is associated with preparing for battle.
It involves rhythmic foot stamping, arm movements and chanting and is performed by New Zealand's All Blacks rugby team before they play a match.
Vorderman – who is recovering from long COVID – has spent the summer in Wales enjoying early-morning paddle boarding sessions alongside freshly cooked bacon-and-egg breakfasts on the beach.
The TV star later shared images of herself tossing her hair around as she pretended her paddle board was a wind machine when she released the air from it.
She joked: "I love doing this when you release the air from your paddleboard. It's like a Billy Big Bo*****s wind machine on a photoshoot.
"Ah...I forgot the make up bit...Soz...don't show it to the kids or they'll get nightmares."
The TV presenter – who competed in I'm A Celebrity... Get Me Out Of Here! in 2016 – admitted she still falls in the water occasionally but thinks she has started to master the art of paddle boarding.
She joked: “Yes I'm a #HappyScruff.....#bikini top inside out #nomakeup (with huge apologies to @elizabethhurley1... Queen of the bikinis,” she wrote on Instagram.
“One day I'll learn to posh up a bit… but probably not going to happen anytime soon.”
Watch: Carol Vorderman opens up on battle with long COVID