IIRC, Dracula appears in daylight twice in the novel, but he's just walking around. Stoker never says that sunlight harms him; he must sleep in his native soil during the day, but maybe not all day. And though the sun is setting when the vampire slayers catch up to him at the climax, it doesn't seem to be harming him, though it may rob him of his more dangerous abilities.

FWIW, many English vampire stories that pre-date Dracula have vampires walking around during the day.