The 22-year-old Harry Potter star has been dating girlfriend Rosie Coker for a year, but won't see her during the romantic holiday.
Radcliffe blamed a busy schedule promoting his new film The Woman in Black for the absence.
He told The Mirror: "I haven't seen [Rosie] for weeks and I won't even be back for Valentine's Day."
The young star said that he will be back a few days after, and will make up for lost time, adding: "I can't wait to see Rosie. I've got three weeks off so we can be together - although I do plan to watch quite a bit of sport on TV."
The Woman in Black went straight to number one at the American box office this past weekend. It opens in UK cinemas on February 10.
Radcliffe will next appear in the picture Kill Your Darlings as Allen Ginsberg, alongside Elizabeth Olsen, Catherine Keener and Michael C Hall.
Watch the trailer for The Woman in Black below: