Hawaii Five-O Episode Ratings Heatmap
1968 · 12 Seasons · 284 Episodes · Overall Score: 7.0/10 (66 rated)
Season 9 holds the highest collective average score across the series.
Season 9 Details →Lowest score variance (σ = 0.69), maintaining an average of 7.9.
Complete Episode Rating Matrix
Interactive score chart by season and episode number. Darker green indicates higher ratings; amber and red denote lower reception.
| Episode | Season 1 | Season 2 | Season 3 | Season 4 | Season 5 | Season 6 | Season 7 | Season 8 | Season 9 | Season 10 | Season 11 | Season 12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ep 1 | 7.7 | 8.0 | – | – | 7.0 | 8.0 | – | – | – | – | – | 8.0 |
| Ep 2 | 8.0 | – | – | – | – | 8.0 | – | – | – | – | – | – |
| Ep 3 | 2.7 | 8.0 | – | – | – | 8.0 | – | 7.0 | – | 6.0 | – | – |
| Ep 4 | 8.0 | – | – | – | – | – | – | 7.0 | – | 8.0 | – | – |
| Ep 5 | 8.5 | – | – | 7.0 | – | – | – | 7.0 | – | – | – | – |
| Ep 6 | 8.0 | – | – | – | – | – | – | – | – | – | – | – |
| Ep 7 | – | – | 7.0 | – | – | 3.3 | 8.0 | – | – | – | – | – |
| Ep 8 | – | 7.0 | 9.0 | – | – | – | 8.0 | – | – | – | – | – |
| Ep 9 | – | – | – | – | – | – | – | – | – | – | – | – |
| Ep 10 | – | – | – | – | 8.0 | 1.0 | – | – | – | – | – | – |
| Ep 11 | – | – | 8.0 | – | – | – | – | – | – | – | – | – |
| Ep 12 | 7.0 | – | – | – | – | – | – | – | – | – | – | – |
| Ep 13 | – | – | – | – | – | – | – | – | 9.0 | – | – | – |
| Ep 14 | 7.5 | – | – | – | 1.0 | 7.0 | 8.0 | 8.0 | – | – | 7.0 | – |
| Ep 15 | – | – | – | – | – | 8.0 | 8.0 | 8.0 | – | – | – | – |
| Ep 16 | 7.0 | – | – | 8.0 | – | 7.0 | – | – | – | – | 1.0 | – |
| Ep 17 | 8.0 | – | – | 8.0 | 8.0 | – | – | 7.0 | – | – | 7.0 | – |
| Ep 18 | – | – | – | 8.0 | – | – | – | 8.0 | 7.0 | – | – | – |
| Ep 19 | – | 7.0 | – | – | – | – | – | – | – | – | – | – |
| Ep 20 | – | 9.0 | 6.0 | – | – | – | – | 8.0 | – | – | – | 7.0 |
| Ep 21 | – | – | 6.0 | – | – | – | – | – | – | – | 8.0 | – |
| Ep 22 | – | – | – | – | – | – | 6.0 | 6.0 | – | – | – | – |
| Ep 23 | – | 8.0 | – | – | – | – | 6.0 | – | – | – | – | – |
| Ep 24 | – | 8.0 | – | 1.0 | 8.0 | – | 6.0 | – | – | – | – | – |
| Ep 25 | – | – | – | – | – | – | – | – | – | – | – | – |
| Season Avg | 7.2 | 7.9 | 7.2 | 6.4 | 6.4 | 6.3 | 7.1 | 7.3 | 8.0 | 7.0 | 5.8 | 7.5 |
Ratings Analysis & Trajectory
Across 12 seasons and 284 episodes, Hawaii Five-O has earned an overall series rating of 7.0 out of 10. The series displays remarkable consistency across its narrative arc, maintaining reliable ratings from premiere to conclusion.
The single highest-rated hour of television in the series is Season 2, Episode 20 ("Cry, Lie"), rated at an extraordinary 9.0/10 with 1 ratings. Conversely, the lowest-rated installment is Season 11, Episode 16 ("The Bark And The Bite"), landing at 1.0/10.
The most precipitous single-episode shift occurred in Season 1 between Episode 2 ("Cocoon (2)", 8) and Episode 3 ("Full Fathom Five", 2.7), a swing of 5.3 points.
Top 10 Highest Rated Episodes of Hawaii Five-O
| Rank | Episode | Title | Score | Votes | Air Date |
|---|---|---|---|---|---|
| #1 | Season 2, Ep 20 | Cry, Lie | 9.0 | 1 | Feb 4, 1970 |
| #2 | Season 3, Ep 8 | The Reunion | 9.0 | 1 | Nov 4, 1970 |
| #3 | Season 9, Ep 13 | The Bells Toll At Noon | 9.0 | 1 | Jan 6, 1977 |
| #4 | Season 1, Ep 5 | Tiger By The Tail | 8.5 | 2 | Oct 10, 1968 |
| #5 | Season 1, Ep 6 | Samurai | 8.0 | 2 | Oct 17, 1968 |
| #6 | Season 1, Ep 2 | Cocoon (2) | 8.0 | 1 | Jun 11, 1969 |
| #7 | Season 1, Ep 4 | Strangers In Our Own Land | 8.0 | 1 | Oct 3, 1968 |
| #8 | Season 1, Ep 17 | Face Of The Dragon | 8.0 | 1 | Jan 22, 1969 |
| #9 | Season 2, Ep 1 | A Thousand Pardons -- You're Dead! | 8.0 | 1 | Sep 24, 1969 |
| #10 | Season 2, Ep 3 | Forty Feet High And It Kills! | 8.0 | 1 | Oct 8, 1969 |