How long is Summer Wars?

Summer Wars is 1 h 54 min long (114 minutes). If you start it at 8:00 pm it ends at 9:54 pm; add about 20 minutes if you watch trailers first.

What is Summer Wars rated?

Summer Wars is rated PG in the US.

Where can I stream Summer Wars?

In the US, as of 2026-11-08: HBO Max Amazon Channel (subscription), HBO Max (subscription). Availability changes often; this page loads the live list for your country (streaming availability by JustWatch).

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Where to watch Summer Wars (2009) tonight

Summer Wars (2009) runs 1 h 54 min, is rated PG in the US and averages 7.5 from 1,091 TMDB members. 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.

Runtime: 1 h 54 min — ends 9:54 pm if you start at 8:00 pm
Rated: PG (US)
Genres: Animation, Science Fiction
Released: August 1, 2009
TMDB rating: 7.5 / 10 from 1,091 votes
Director: Mamoru Hosoda
Starring: Ryunosuke Kamiki, Hitomi Miyauchi, Mitsuki Tanimura, Sumiko Fuji
Language: Japanese
Original title: サマーウォーズ

Good for a group? Yes — a crowd movie.Animation and Science Fiction hold a room: people can talk, laugh or scream over it and still follow what is going on.

Where to watch it tonight

Availability loads live for your country. See where Summer Wars streams (JustWatch via TMDB) →

Streaming availability by JustWatch. In the US, as of 2026-11-08: HBO Max Amazon Channel (subscription), HBO Max (subscription).

Questions people ask

How long is Summer Wars?: Summer Wars is 1 h 54 min long (114 minutes). If you start it at 8:00 pm it ends at 9:54 pm; add about 20 minutes if you watch trailers first.
What is Summer Wars rated?: Summer Wars is rated PG in the US.
Is Summer Wars a good movie to watch with a group?: Yes — a crowd movie. Animation and Science Fiction hold a room: people can talk, laugh or scream over it and still follow what is going on.
Where can I stream Summer Wars?: In the US, as of 2026-11-08: HBO Max Amazon Channel (subscription), HBO Max (subscription). Availability changes often; this page loads the live list for your country (streaming availability by JustWatch).

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If you like Summer Wars

Summer Wars on TMDB · This product uses the TMDB API but is not endorsed or certified by TMDB.

Lights Down is a free tool: tell it your streaming services and how long you have, and it ranks what you can stream tonight, with a this-or-that, a roll, a bracket and a wheel. Movie data from TMDB; streaming availability by JustWatch. Page updated 2026-11-08. This product uses the TMDB API but is not endorsed or certified by TMDB. Lights Down is a Somebody Decide program. How the data works · Legal & privacy · Tonight's lists