| No | Programme Title | Transmission Date and Time | Company | Thousands of Viewers |
|---|---|---|---|---|
| 1 | PATROL PAWENNAU | Thursday (07:30) and Sunday (08:40) | Cwmni Da | 34 |
| 2 | NEWYDDION 9 | Monday (21:00) | BBC Cymru | 29 |
| 3 | PATROL PAWENNAU | Tuesday (07:30) and Saturday (07:30) | Cwmni Da | 27 |
| 4 | EISTEDDFOD GENEDLAETHOL CYMRU 2018 | Friday (16:20) | BBC Cymru | 26 |
| 5 | NOSON LAWEN | Saturday (21:00) | Cwmni Da | 25 |
| = | EISTEDDFOD GENEDLAETHOL CYMRU 2018 | Friday 21:30) and Friday 23:40) | BBC Cymru | 25 |
| 7 | EISTEDDFOD GENEDLAETHOL CYMRU 2018 | Sunday (19:30) and Thursday W33 (22:00) | BBC Cymru | 24 |
| = | EISTEDDFOD GENEDLAETHOL CYMRU 2018 | Friday (18:15) | BBC Cymru | 24 |
| 9 | NEWYDDION 9 | Wednesday (21:00) | BBC Cymru | 22 |
| 10 | NEWYDDION 9 | Tuesday (21:00) | BBC Cymru | 21 |
| 11 | EISTEDDFOD GENEDLAETHOL CYMRU 2018 | Saturday (13:30) | BBC Cymru | 20 |
| 12 | EISTEDDFOD GENEDLAETHOL CYMRU 2018 | Thursday (21:45) and Thursday (24:00) | BBC Cymru | 19 |
| = | EISTEDDFOD GENEDLAETHOL CYMRU 2018 | Saturday (20:00) | BBC Cymru | 19 |
| 14 | EISTEDDFOD GENEDLAETHOL CYMRU 2018 | Monday (20:00) and Monday (23:35) | BBC Cymru | 18 |
| 15 | EISTEDDFOD GENEDLAETHOL CYMRU 2018 | Tuesday (20:00) and Tuesday (23:35) | BBC Cymru | 17 |
| = | EISTEDDFOD GENEDLAETHOL CYMRU 2018 | Monday (16:05) | BBC Cymru | 17 |
| 17 | NEWYDDION S4C | Friday (18:00) | BBC Cymru | 16 |
| = | NEWYDDION S4C | Tuesday (12:00) | BBC Cymru | 16 |
| 19 | EISTEDDFOD GENEDLAETHOL CYMRU 2018 | Saturday (16:30) | BBC Cymru | 15 |
| = | EISTEDDFOD GENEDLAETHOL CYMRU 2018 | Wednesday (21:30) and Wednesday (23:35) | BBC Cymru | 15 |
