December 2026 Movie Releases: The Month Two Franchises Decided to Share

On December 18, 2026, Avengers: Doomsday and Dune: Part Three open on the same day. Robert Downey Jr. and Timothée Chalamet have taken to calling it Dunesday. IMAX screens across the country are going to have to pick a side, and thousands of people are going to attempt both in one sitting.

The December 2026 movie releases calendar is the most crowded in at least a decade, and the collision at the center of it is worth understanding, because it tells you something about how the movie business currently works that no press release will.

Here is the full month, and then the argument about what it means.

The December 18 Collision

Avengers: Doomsday brings Chris Hemsworth, Robert Downey Jr. as Doctor Doom, Florence Pugh, and a cast pulled from three separate universes together against Doom. It is the culmination of Marvel's multiverse arc and the most consequential film for the studio since Endgame, which happens to be back in theaters this September as a warm-up.

Dune: Part Three completes Denis Villeneuve's adaptation, moving into Dune Messiah territory with Chalamet, Zendaya, and Florence Pugh. Note that Pugh is in both films opening that day, which is either excellent agenting or a scheduling nightmare depending on who you ask.

Legacy studio logic says one of these should move. Two four-quadrant blockbusters on one date splits IMAX and premium large format screens, splits marketing attention, and splits the opening weekend audience. In 2019 one of them would have blinked.

Neither did, and the reason is Barbenheimer.

In July 2023 Barbie and Oppenheimer opened opposite each other, and instead of cannibalizing one another they produced the biggest non-pandemic-recovery weekend of the decade. The cultural event of seeing both became bigger than either film. Studios have spent three years trying to manufacture that lightning again, and mostly failing, because you cannot schedule a phenomenon.

What is different this time is that both studios appear to have decided the collision is the marketing. Downey and Chalamet publicly branding the date is not two competitors being good sports. It is two studios recognizing that a shared event sells more total tickets than two separate ones.

Whether it works is genuinely uncertain. Barbie and Oppenheimer were tonal opposites, which is what made the double feature funny and shareable. Doomsday and Dune 3 are both large, serious, effects-driven science fiction with overlapping audiences and roughly five and a half hours of combined runtime. The double feature is a much harder sell when both films want the same three hours of your attention span.

Dune has already made one move: reports indicate early IMAX screenings ahead of the shared date, which functions as a soft way of getting a head start without formally abandoning the ground.

The Rest of December 2026 in Theaters

Violent Night 2 (December 4) brings back David Harbour as the brawling Saint Nick, with Jared Harris and Kristen Bell. The first film worked because it committed fully to a stupid premise, which is harder than it sounds.

Behemoth! (December 4, limited) has Pedro Pascal as a cellist returning home, with Olivia Wilde and Hank Azaria. Pascal in a small drama during awards season is a deliberate move.

Flavia (December 4, limited) adapts the Flavia de Luce mysteries, with Martin Freeman and Toby Jones supporting Molly Belle Wright as the young chemist detective.

Zero A.D.: The Birth of Christ (December 11) reunites Jim Caviezel with biblical material, alongside Sam Worthington and Gael García Bernal.

The Debut (December 11) is an R-rated comedy musical with Julianne Moore, Paul Giamatti, and Jesse Eisenberg, which is a combination of actors that suggests the comedy is going to be extremely dry.

Clarissa (December 11, limited) has Ayo Edebiri, David Oyelowo, and Sophie Okonedo. Edebiri's transition into dramatic work has been one of the more interesting career pivots of the last two years.

The Angry Birds Movie 3 (December 23) takes the family slot before Christmas.

Jumanji: Open World (December 25) returns Dwayne Johnson, Jack Black, and Kevin Hart, with the premise escaping the console into the real world.

Werwulf (December 25) is Robert Eggers following Nosferatu with another folk horror piece, written in Middle English. Eggers has never made a compromise for accessibility and does not appear to be starting now.

Mr. Irrelevant: The John Tuggle Story (December 25) has David Corenswet in a sports drama about the last player picked in the NFL draft.

Nutmeg & Mistletoe (December 25, limited) with Nia Vardalos handles the holiday romance slot.

December on Streaming

The month is nearly as loaded at home.

The Man with the Bag (December 2, Prime Video) is the year's most improbable Christmas movie: Alan Ritchson, Arnold Schwarzenegger, Awkwafina, and Ken Jeong in a comedy about the theft of Santa's bag. Schwarzenegger doing broad Christmas comedy at this point in his career is a choice, and possibly the correct one.

La Bola Negra (December 2, Netflix) has Glenn Close and Penélope Cruz in a Spanish historical drama.

Ray Gunn (December 18, Netflix) is Brad Bird's animated sci-fi noir with Scarlett Johansson and Sam Rockwell, a project Bird has been trying to make since the early 2000s.

The Adventures of Cliff Booth (December 23, Netflix) arrives after its IMAX run over Thanksgiving. Fincher directing Pitt from a Tarantino script.

Harry Potter and the Philosopher's Stone (December 25, HBO Max) launches the television adaptation on Christmas Day, with Nick Frost as Hagrid, John Lithgow as Dumbledore, and Warwick Davis returning to the franchise in a new role.

That last one deserves a moment. Warner Bros. Discovery is putting the first episode of its most valuable remaining IP on Christmas Day, opposite Jumanji and Werwulf in theaters and Ray Gunn on Netflix. Christmas Day used to belong exclusively to movie theaters. It now belongs to whoever can get into a living room where four generations of a family are trapped together.

What a Month Like This Actually Costs

Here is the part that does not appear in the release calendars.

A crowded December is good for studios with tentpoles and brutal for everything else. Behemoth!, Clarissa, and Flavia are all films that in a quieter month might build word of mouth over three or four weeks. In a December where two franchise films are consuming every premium screen and every marketing impression, small films get roughly nine days before the theaters they are playing in need those auditoriums back.

This is the mechanism that quietly killed the mid-budget adult drama, and it is worth naming because the industry usually blames audiences instead. The films did not stop existing because people stopped wanting them. They stopped getting a runway long enough for people to hear about them.

The counter-argument, which has some force, is that streaming has become the runway. A film that dies in December gets a second life in March when a service picks it up, and some of these titles will find larger audiences at home than they ever would have in theaters. Practical Magic is the proof of concept: a theatrical disappointment that became a beloved seasonal staple entirely through home viewing, and got a sequel twenty-eight years later because of it.

Both things are true, and the tension between them is basically the whole story of the movie business in 2026.

What December Tells You About 2027

There is a useful signal buried in the December calendar, and it has to do with where studios are placing their bets for next year.

Avengers: Doomsday and Dune: Part Three both represent the end of something. Marvel's multiverse arc concludes. Villeneuve's Herbert adaptation completes. Neither franchise has an obvious next step already in production, which means that after December 18 the two largest science fiction properties in American film both go quiet at the same time.

That gap is why Jumanji: Open World, The Angry Birds Movie 3, and The Cat in the Hat are all clustered in the same eight weeks. Studios are positioning family franchises to absorb the attention that the tentpoles are about to stop demanding. It is also why Werwulf and Clayface exist: when the four-quadrant slots are full, the way to differentiate is to make something the tentpoles legally cannot.

The other signal is the volume of biography. I Play Rocky, Hershey, Madden, Mr. Irrelevant, Being Heumann, Musk. Six films about real people in a four month window. True stories are the current answer to the intellectual property problem: they arrive with built-in recognition, they cost a fraction of a franchise film, and nobody has to license anything. Expect considerably more of them in 2027.

None of this is visible from any single release date. It only shows up when you lay the whole quarter out at once, which is the argument for reading a release calendar as a document rather than a schedule.

How to Plan a December Like This

Some practical advice, learned from years of the Global Cinephiles chat comparing notes after every holiday season.

Book Dunesday early. IMAX and premium large format seats for December 18 will be gone weeks ahead. If you are attempting both films in one day, buy them as separate transactions with at least ninety minutes between showings.

Do not attempt both on opening day. Combined runtime plus trailers plus the walk between auditoriums is close to six and a half hours. Spread it over two days and you will enjoy both more.

Use the first two weeks for the small films. Behemoth!, Clarissa, and Flavia will be in theaters in early December and largely gone by the 18th. That window is the only one they get.

Christmas Day is the best theater day of the year. Auditoriums are full, crowds are in a good mood, and nobody is checking their phone because they are avoiding their relatives. It is a genuinely better viewing environment than a random Tuesday.

Frequently Asked Questions

When does Avengers: Doomsday come out? December 18, 2026, in theaters.

When does Dune: Part Three come out? December 18, 2026, the same day as Avengers: Doomsday, with early IMAX screenings reported ahead of the wide release.

What is Dunesday? The nickname Robert Downey Jr. and Timothée Chalamet gave to December 18, 2026, when Avengers: Doomsday and Dune: Part Three open opposite each other.

What movies come out on Christmas Day 2026? Jumanji: Open World, Werwulf, Mr. Irrelevant: The John Tuggle Story, and Nutmeg & Mistletoe in theaters. Harry Potter and the Philosopher's Stone premieres on HBO Max the same day.

What are the best Christmas movies coming out in 2026? Violent Night 2 (December 4), The Man with the Bag on Prime Video (December 2), and Nutmeg & Mistletoe (December 25) are the main holiday releases.

Somebody Has to Settle the Doomsday vs Dune Argument

It is going to be litigated in every group chat in the world on December 19, and most of those chats contain four people who have already agreed with each other.

Global Cinephiles on Tribe Chat is bigger and considerably less polite. Film people across a dozen countries, watching on opening weekend, comparing notes across time zones while the discourse is still forming. If you want to know what Dune: Part Three actually plays like before you commit six hours of your holiday to it, this is where you find out.