Warming Charm

• Incantation: Unknown
• Pronunciation: Not applicable as the incantation is unknown.
• Wand Movement: Unknown
• Light: None described in the text; the effect appears to be invisible.
• Effect: Causes the target object or person to become warm. It can be used to dry wet clothes, heat blankets, or directly warm a person shivering from cold.
• Type: Charm

The Warming Charm is a practical and common spell used to generate warmth and combat the effects of cold. Its use is noted in several significant events throughout the latter half of the Second Wizarding War.

• In 1995, during the Second Task of the Triwizard Tournament, Hermione Granger used a Warming Charm on herself, Harry Potter, and Ron Weasley after they emerged shivering from the freezing waters of the Black Lake. She mentioned that she had discovered the spell in a book, indicating it is a learnable and standard piece of magic.
• In 1997, after retrieving the Locket of Salazar Slytherin Horcrux from the seaside cave, Harry cast a “clumsy-looking” Warming Charm on Albus Dumbledore, who was extremely cold and weakened by the Emerald Potion.
• During their hunt for Horcruxes in 1997-1998, the Warming Charm was a staple for survival. Hermione Granger frequently used it:
  • She cast it on the ground of their campsite after the trio escaped from the Ministry of Magic, following Ron's Splinching.
  • She later cast the charm on spare blankets to warm Harry after Ron Weasley rescued him from the icy pond where he had found the Sword of Gryffindor.

The Warming Charm appears to be of moderate difficulty. Hermione Granger was able to learn and cast it effectively in her fourth year at Hogwarts School of Witchcraft and Wizardry. Harry Potter was also able to cast it in his sixth year, although his attempt was described as clumsy, suggesting that proficiency can vary. There are no known specific counter-spells. The most direct counter would likely be exposure to extreme cold or a magical equivalent, such as the Freezing Charm (Immobulus).

The name “Warming Charm” is purely descriptive of its function: to warm things up. As the incantation is never stated in the primary canon, no further etymological analysis is possible.

In the Harry Potter: Hogwarts Mystery mobile game, the incantation for the Warming Charm is given as `Incendio`. This contradicts the book canon, where Incendio is the Fire-Making Spell that produces actual flames, a distinctly different effect from the gentle, invisible heat produced by the Warming Charm. The books clearly treat the two spells as separate. (video game)