De zussen July en September zijn twee handen op een buik, maar verschillen tegelijkertijd erg van elkaar. Ze worden opgevoed door hun alleenstaande moeder Sheela. Wanneer September van school geschorst wordt, moet July voor zichzelf leren zorgen waarna ze haar eigen zelfstandigheid toont. Deze verandering ontgaat ook haar zus niet. Het gezin vestigt zich in een Iers vakantiehuis, waar de spanningen oplopen.
Nee, helaas is September Says nog niet beschikbaar op Netflix in Nederland.
| Directing | Ariane Labed | Director |
| Writing | Ariane Labed | Writer |
| Writing | Daisy Johnson | Novel |
| Camera | Balthazar Lab | Director of Photography |
| Production | Ed Guiney | Producer |
| Camera | Despina Spyrou | Still Photographer |
| Production | Isabella Odoffin | Casting |
| Production | Lara Hickey | Producer |
| Production | Romanna Lobach | Producer |
| Art | Lauren Kelly | Production Design |
| Editing | Bettina Böhler | Editor |
| Art | Diarmuid Wolfe | Art Direction |
| Directing | Ger Duffy | First Assistant Director |
| Directing | Richard Cosgrove | Second Assistant Director |
| Production | Claudia Yusef | Executive Producer |
| Production | Greg Martin | Executive Producer |
| Production | Niamh Fagan | Executive Producer |
| Production | Rachel Dargavel | Co-Producer |
| Production | Viola Fügen | Co-Producer |
| Production | Michael Weber | Co-Producer |
| Production | Cécile Tollu-Polonowski | Co-Producer |
| Production | Andrew Lowe | Producer |
| Production | Chelsea Morgan Hoffmann | Producer |
| Editing | Dirk Meier | Colorist |
| Costume & Make-Up | Clare Lambe | Makeup Designer |
| Art | Orla O'Connor | Set Decoration |
| Costume & Make-Up | Sandra Kelly | Hair Designer |
| Costume & Make-Up | Saileóg O'Halloran | Costume Design |
| Sound | Johnnie Burn | Sound Designer |
| Costume & Make-Up | Emma Moffat | Key Makeup Artist |
| Sound | Patrick Downey | Sound Mixer |
| Sound | Tobias Fleig | Sound Re-Recording Mixer |
| Sound | Rainer Heesch | Supervising Sound Editor |
| Production | Greg Martin | Executive Producer |
| Production | Christine Kelly | Line Producer |
| Directing | Ebony Corcoran | Third Assistant Director |
| Camera | Cait Fahey | Still Photographer |
| Camera | Michael Cafferkey | Grip |
| Lighting | Tim Fletcher | Gaffer |
| Camera | Richie Egan | Grip |
| Crew | Joe Condren | Stunt Coordinator |
| Crew | Sean Condren | Stunt Coordinator |
| Visual Effects | Aaron Carroll | Visual Effects Producer |
| Crew | Blayne Fitzpatrick | Compositor |
| Art | Jack Cairns | Property Master |
| Art | Orla Collins | Graphic Designer |
