Where to watch Summer Wars(2009)
In the United States, Summer Wars is available to stream on HBO Max. You can also rent or buy it on Amazon Video, Apple TV, Google Play, and YouTube.
Where to stream Summer Wars
Availability in United States
Included with subscription
HBO Max
Rent
Amazon Video
Apple TV
Google Play
YouTube
Fandango At Home
Buy
- Amazon Video
- Apple TV
- Google Play
- YouTube
- Fandango At Home
Data updated on October 11, 2026. Availability data from JustWatch.
Summer Wars plot summary
Always protect your network.
Teenage math whiz Kenji Koiso agrees to take a summer job at the Nagano hometown of his crush, Natsuki. When he arrives, he finds that her family have reunited to celebrate the 90th birthday of their matriarch. His job: pretend to be Natsuki's fiancé. Meanwhile, his attempt to solve a mathematical equation causes a parallel world's collision with Earth.
Details
- Original title
- サマーウォーズ
- Release date
- August 1, 2009
- Runtime
- 1h 54m
- Genres
- Animation, Science Fiction
- Directed by
- Mamoru Hosoda
- Country
- Japan
- TMDB rating
- 7.5 / 10 · 1,082 votes
Summer Wars trailer
Cast
Ryunosuke KamikiKenji Koiso (voice)
Hitomi MiyauchiNatsuki Shinohara (voice)
Mitsuki TanimuraKazuma Ikezawa (voice)
Sumiko FujiSakae Jinnouchi (voice)
Ayumu SaitoWabisuke Jinnouchi (voice)
Takahiro YokokawaTakashi Sakuma (voice)
Kiyomi TanigawaYukiko Shinohara (voice)
Mutsumi SasakiKazuo Shinohara (voice)
Mieko NobusawaMariko Jinnouchi (voice)
Takuya KirimotoRiichi Jinnouchi (voice)
FAQ
Where can I watch Summer Wars?
In the United States, Summer Wars is available to stream on HBO Max. You can also rent or buy it on Amazon Video, Apple TV, Google Play, and YouTube.
Can I rent or buy Summer Wars?
Yes. In the United States you can rent or buy it on Amazon Video, Apple TV, Google Play, YouTube, and Fandango At Home.
How long is Summer Wars?
Summer Wars runs 1h 54m (114 minutes).
Keep track of everything you watch
Save this title to your MisPelis library, log it in your diary and find where to watch any movie or show from your phone. Free for iOS and Android.
