We’ve seen Jason Momoa go shirtless a lot in the DCEU, whether it’s while rescuing a shipwrecked sailor off the coast of Iceland or tangling with Black Manta and his goons aboard a submarine.
And even if Momoa is fully clothed while shooting Aquaman 2 scenes in that location, it’s a good bet there’s someone off-camera waiting to bundle him in a warm coat once “CUT!” is yelled.
But even though Arthur Curry can clearly handle colder temperatures better than the average human, I imagine being in a frigid environment like the one James Wan showed above will make even him want to wear a shirt.