The new testament doesn’t say much about how Jesus appeared but from the encounter with the Samaritan woman at Jacob’s well she knew just by looking at Jesus that he was one who would worship at Jerusalem. Obviously from physical appearance or the clothing he wore or a combination of both he appeared recognizably Jewish.
It might have been His dialect.
The image on the Shroud is a man in his early to mid-30’s of Semitic origin. This has been long known.