December is the twelfth and last month of the year. It's one of the months of the year with thirty-one days.
- December 1995: Arthur Weasley returns home after being attacked by Nagini at the Ministry of Magic.
- December 1995: Postmortem analysis reveals that a series of notes Albus Dumbledore wrote before his death regarding The Tales of Beedle the Bard were completed around this time, approximately eighteen months before his death in June of 1997.
- 24 December (Christmas Night) 1997: Harry and Hermione visit Godric's Hollow and get attacked by Nagini impersonating Bathilda Bagshot.
- 1991 - Harry Potter receives his invisibility cloak as a present from Albus Dumbledore.
- 6 December — Rubeus Hagrid; Griselda Jorkins
- 12 December — Charlie Weasley
- 31 December — Tom Marvolo Riddle