Grand Blue Dreaming Episode Ratings Heatmap
2018 · 3 Seasons · 36 Episodes · Overall Score: 7.9/10 (27 rated)
Season 2 holds the highest collective average score across the series.
Season 2 Details →Lowest score variance (σ = 0), maintaining an average of 8.0.
Complete Episode Rating Matrix
Interactive score chart by season and episode number. Darker green indicates higher ratings; amber and red denote lower reception.
Ratings Analysis & Trajectory
Across 3 seasons and 36 episodes, Grand Blue Dreaming has earned an overall series rating of 7.9 out of 10. The series demonstrates an upward quality trajectory, with later seasons sustaining higher viewer acclaim than its debut.
The single highest-rated hour of television in the series is Season 1, Episode 1 ("Deep Blue"), rated at an extraordinary 8.7/10 with 7 ratings. Conversely, the lowest-rated installment is Season 1, Episode 8 ("Men's Cocktails"), landing at 6.6/10.
The most precipitous single-episode shift occurred in Season 1 between Episode 4 ("The Male Beauty Pageant", 8.7) and Episode 5 ("Too Late", 6.8), a swing of 1.9 points.
Top 10 Highest Rated Episodes of Grand Blue Dreaming
| Rank | Episode | Title | Score | Votes | Air Date |
|---|---|---|---|---|---|
| #1 | Season 1, Ep 1 | Deep Blue | 8.7 | 7 | Jul 14, 2018 |
| #2 | Season 1, Ep 4 | The Male Beauty Pageant | 8.7 | 5 | Aug 4, 2018 |
| #3 | Season 2, Ep 6 | Back to the All-Girls College | 8.7 | 3 | Aug 12, 2025 |
| #4 | Season 2, Ep 8 | Coworkers | 8.7 | 3 | Aug 26, 2025 |
| #5 | Season 2, Ep 11 | Let's Go to an Uninhabited Island! | 8.7 | 3 | Sep 16, 2025 |
| #6 | Season 1, Ep 2 | Underwater | 8.6 | 7 | Jul 21, 2018 |
| #7 | Season 2, Ep 12 | Now We're Even | 8.5 | 2 | Sep 23, 2025 |
| #8 | Season 1, Ep 3 | A New World | 8.4 | 7 | Jul 28, 2018 |
| #9 | Season 2, Ep 4 | Ticket Scramble | 8.3 | 3 | Jul 29, 2025 |
| #10 | Season 2, Ep 5 | First Time at a Women's University | 8.3 | 3 | Aug 5, 2025 |