Netflix USA’s lineup for September is full of noteworthy releases over the past 12 months – everything from animated family features, chilling thriller films, and touching comedies. So whether you are looking for sharp wit, a strong emotional connection, or just an excuse to watch a big screen spectacle, this list of the Best Movies on Netflix USA in September 2025 has you covered.
Why September is Good for Streaming?
Before we jump into our list, it is worth asking the question, why is September a good month for bingeing on movies?
- Change of Season – As the summer winds down, nights become longer, making it the perfect weather for movie marathons.
- The Hopeful Buzz of Award Season – Films that are released in the late summer often become the ones that lead to talk about the upcoming award season.
- New Releases – Netflix typically revamps a lot of their catalog at the beginning of fall ensuring you have plenty of new films to choose from.
So whether you are finding which big blockbusters you have not seen, thoughtful dramas, or lighthearted comedies, September is the month for you to check out the Best of Netflix.
Best Movies on Netflix USA in September are:
1. Plankton: Movie
Why to Watch:
- The dear old SpongeBob villain is given a charming spinoff.
- Fun, catchy musical numbers will make this a fun watch for anyone of all ages.
- Broke all English film debuting records for Netflix, with 14.3 million viewers in the same weekend.
Summary:
Plankton has his usual plans for world domination, only to be comically outdone by his AI wife, Karen, and they will literally sing it together. This movie is a humorous dose of slapstick with some heart, creating an easy watch in this delightful gem to watch for family movie night.
2. Havoc
Why to watch:
- It is doing The Raid intensity with Tom Hardy as a lead.
- Late release hype – genre fans are fired up.
- Great gritty action with star casting, including Forest Whitaker.
Summary:
The story revolves around the despicable politics of crime and power. A detective must save the son of a politician from a deal gone wrong. Gritty, heavy-duty, and raw – this is how you do high-octane action.
3. The Electric State
Why to watch:
- Directed by the Russo Brothers, a cinematic-sized budget.
- Visually spectacular journey through a 90s infused dystopia with Millie Bobby Brown.
- Launched buzz-worthy ensemble cast with a compelling twist narrative.
Summary:
In a 90’s infused dystopia, a young woman and her robot companion travel across a decaying America to find her missing brother. It is sci-fi with feeling. It’s emotionally rich and visually stunning so The Electric State is must recommend to watch.
4. Back in Action
Why to Watch:
- If you love the humor of Cameron Diaz + Jamie Foxx, you are in for a treat because the duo is back together after quite a long period of time.
- Spy comedy that has absurd nostalgia and dramatic humor.
- Fun and action-packed journey across the world.
Summary:
Former CIA agents and married parents find themselves going back to their old life and back on the road when their past catches up with them. Great chemistry, witty banter, and spy thrills create a fun and breezy experience that is great for the entire family we strongly recommend to watch Back in Action if you have a taste of Action Comedy.
5. Kinda Pregnant
Why to Watch:
- You get to experience Amy Schumer in a game-changing premise.
- You could be in line to become part of a viral phenomenon – the most-viewed film in its first week of release.
- A comedic yet honest approach to human identity, rejection, and friendship-based decisions.
Summary:
A Los Angeles school teacher, out of envy, pretends to be pregnant only to realize how complicated her life can become when her jealousy becomes the cause of the dilemma. The story and plot are funny, candid, and deceptively touching at the same time—modern comedy done right.
6. Mantis (Coming 26 Sept 2025)
Why to Watch:
- A spin-off of the successful Kill Boksoon universe.
- High-octane assassin action packed with spectacular choreography.
- A new stylistic thrill from Netflix Korea.
Summary:
A top assassin just returned from a vacation and found the hitman world upside down. Dragged back into the fray he is reacquainted with rivals and hidden threats on all sides leading to an epic clash to re-claim his championship as best in the pack.
7. The Thursday Murder Club
Why to Watch:
- Big name cast like Helen Mirren and Pierce Brosnan.
- A whimsy mystery with humor, warmth, and suspense.
- A fresh setting where a retirement home transforms into a deadly mystery scene.
Summary:
The Thursday Murder Club is about an Old sleuths living at a retirement community-turned-murder-solving team break a real murder. When humor, warmth, and twists are expected at every turn, it’s a cozy mystery you won’t want it to end.
8. A House of Dynamite (Coming Oct 2025)
Why to Watch:
- Directed by Kathryn Bigelow—real-time thriller drama involving a nuclear crisis.
- The ensemble cast includes Idris Elba, Rebecca Ferguson, and Jared Harris.
- Consistently being recognized for its immersive, documentary style.
Summary: Taking place around a U.S. nuclear threat, this film won’t be streaming until late October, but its tension and precision makes it likely to not be overlooked—even in September’s roundups.
9. Frankenstein (Coming Nov 2025)
Why to Watch:
- An extraordinarily emotional adaptation that already has great expectations—Guillermo del Toro.
- With Oscar Isaac and Jacob Elordi in the casting mix.
- A new twist on Mary Shelley’s classic, alongside del Toro’s potential aesthetic.
Preview: Frankenstein is about Emerging from creative gestation, this adaptation is anticipated to have emotional center and visual specificity. And while it will not be streaming for clear months, it will surely be on September watchlists.
10. RIP (Coming Fall 2025)
Why you need to watch it:
- A full-throttle action film with Ben Affleck and Matt Damon.
- A high-octane crime story featuring an enormous budget.
- The Netflix hype machine will start soon.
Preview:
The discovery of stolen cash by a police unit thrusts them into a chaotic whirlwind. Affleck and Damon face chaos in this soon to be highly awaited crime-action-thriller.
Final Thoughts
The Netflix USA content coming in September truly demonstrates everything streaming does best by pulling together different genres, voices, and tones to produce something for anyone to want to watch. Plankton: The Movie is an exceptional family film, Havoc takes the action bar to the next level, and films like Mantis’ and The Thursday Murder Club offer a new and bold story. Smaller notable upcoming titles for streaming — A House of Dynamite and Frankenstein— are already gaining some attention.
| Movie | Genre | Quick Take |
|---|---|---|
| Plankton: The Movie | Animated Musical Comedy | Funny SpongeBob spin-off with record-breaking views and catchy songs. |
| Havoc | Action Thriller | Tom Hardy’s gritty, high-octane cop thriller with raw intensity. |
| The Electric State | Sci-Fi Adventure | Russo Bros’ dystopian epic starring Millie Bobby Brown. |
| Back in Action | Action Comedy | Cameron Diaz & Jamie Foxx reunite for a spy-comedy romp. |
| Kinda Pregnant: Movie | Comedy | Amy Schumer’s hilarious fake-pregnancy comedy with heart. |
| Mantis | Korean Action Thriller | Assassin spin-off from Kill Boksoon with sharp choreography. |
| The Thursday Murder Club | Mystery Comedy | Cozy yet thrilling retirement-home murder mystery. |
| A House of Dynamite | Political Thriller | Kathryn Bigelow’s tense, real-time nuclear crisis drama. |
| Frankenstein | Gothic Sci-Fi | Guillermo del Toro’s emotional reimagining of the classic. |
| RIP | Action Thriller | Ben Affleck & Matt Damon team up in a crime-action spectacle. |
Interact with Us
Which of these movies coming to Netflix in 2025 are you most excited for to stream this September? Did your favorite make the list? Please share your thoughts and recommendations in the comments below—we love to talk about movies!
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