Introduction
Modern Christmas likes to present itself as soft lighting, matching pyjamas, and a general agreement to be pleasant for a few days. Dig even slightly under the surface and you find something far older, stranger, and frequently more menacing. For most of its history, the midwinter season was less about cosy domesticity and more about keeping the dark at bay — sometimes by staring straight into it.
Here are a few of the weirder traditions that never quite made it onto the average Christmas card.
Krampus: The Alpine Enforcer
In the Alpine regions of Austria, Bavaria, and parts of Italy and Slovenia, St Nicholas did not work alone. While the saint rewarded the good, his companion Krampus dealt with everyone else.
Krampus is usually depicted as a horned, hairy, cloven-hoofed figure with a long tongue and a fondness for chains and switches. On the night of 5 December (Krampusnacht), he was said to visit houses, thrash badly behaved children, and, in the more extreme versions, stuff them into a sack and carry them off. Some stories have him drowning them or dragging them to hell. Subtlety was never the point.
The figure likely absorbed older pre-Christian winter demons and was later folded into Christian practice as a useful moral counterweight to the kindly saint. By the 19th century he had become popular enough to appear on Christmas cards — the sort that show a leering devil looming over terrified children. Charming seasonal greeting, that.
Today the tradition survives in Krampus runs, where groups of men in elaborate, often genuinely unsettling costumes parade through towns, ringing bells and swatting onlookers. It remains one of the clearest reminders that Christmas once had a punitive edge.
The Yule Cat of Iceland
Iceland’s contribution to festive terror is a giant cat.
Jólakötturinn, the Yule Cat, is said to roam the snowy countryside at Christmas and eat anyone who has not received new clothes for the season. The logic is less random than it first appears. In a society historically dependent on sheep and wool production, finishing the autumn work and ensuring everyone had something new to wear was a practical matter of survival. The cat became a folkloric enforcement mechanism against laziness.
The creature is linked to the wider household of monsters headed by the ogress Grýla, who boiled naughty children in her cauldron, and her thirteen sons, the Yule Lads. The Lads have softened over time into mischievous gift-bringers, but their earlier incarnations were far more vicious. In the 18th century the authorities actually tried to stop parents frightening children with these stories.
The Yule Cat itself first appears clearly in 19th-century folklore collections and was cemented in the public imagination by a 1932 poem. It remains a popular, if slightly menacing, part of Icelandic Christmas.
Victorian Ghost Stories by the Fire
Britain’s own strange contribution was quieter but pervasive. For much of the 19th century, Christmas Eve was considered an excellent time for ghost stories.
The practice had older roots in the general habit of telling eerie tales during the long, dark winter nights. The Victorians formalised it. Magazines produced special Christmas numbers filled with supernatural fiction. Dickens, of course, made the connection permanent with A Christmas Carol, but he was working within an existing taste rather than inventing it from nothing. Writers such as Elizabeth Gaskell, J. Sheridan Le Fanu, and later M.R. James all fed the seasonal appetite for the uncanny.
The appeal was straightforward. Christmas gathered people indoors around the fire at the darkest point of the year. The boundary between the living and the dead felt thinner. A good ghost story offered a controlled dose of fear in a setting that was otherwise meant to feel safe. It was the Victorian version of staring into the dark without having to leave the parlour.
The tradition has largely faded in favour of more sentimental entertainment, but traces remain. The fact that so many people still instinctively reach for something slightly unsettling at Christmas is not accidental.
The Mari Lwyd of Wales
In parts of South Wales, Christmas and New Year once involved a horse’s skull.
The Mari Lwyd (“Grey Mare”) was a real horse skull mounted on a pole, decorated with ribbons and carried by a person hidden under a white sheet. A group would take it from house to house, engaging the occupants in a battle of rhyming insults and verses known as pwnco. If the Mari’s party won, or if the householders simply gave in, the creature was invited inside for food and drink. It was considered good luck.
The custom is first clearly recorded around 1800, though it almost certainly older. Similar hooded-animal traditions existed in other parts of Britain. The Mari Lwyd has the particular distinction of looking, to modern eyes, properly uncanny — a skeletal horse head snapping its jaw in the winter dark while demanding entry through song.
Methodist disapproval in the 19th century nearly killed it off. It survived in pockets and has seen a determined revival in recent decades. It remains one of the most visually striking and least sentimental of British midwinter customs.
Why the Dark Ones Persist
These traditions share a common logic. Midwinter was dangerous. Food could run short. The cold killed. The long nights encouraged both practical anxiety and supernatural thinking. Figures like Krampus, the Yule Cat, and the Mari Lwyd gave shape to that anxiety. They turned vague seasonal dread into something with rules, characters, and, crucially, a way to participate.
The modern preference for a purely gentle Christmas is relatively recent. For most of the festival’s history, the season made room for fear, punishment, mockery, and the acknowledgement that the world was not entirely safe or kind. The strange traditions are not aberrations. They are reminders of what the season used to contain.
Some of them are still here, if you know where to look. The rest survive in the slight unease that still flickers at the edge of a perfectly decorated December night.