Nigels Weather Island
| Porthdinllaen Tide Tables |
| (All times are shown in GMT) |
| Day | Tide | Time | Height | Day | Tide | Time | Height | Day | Tide | Time | Height |
| Friday | Low | 01:25 | 1.28m | Friday | High | 07:06 | 3.97m | Friday | Low | 13:39 | 1.42m |
| Friday | High | 19:08 | 4.33m | Saturday | Low | 02:00 | 0.97m | Saturday | High | 07:37 | 4.24m |
| Saturday | Low | 14:14 | 1.09m | Saturday | High | 19:43 | 4.58m | Sunday | Low | 02:34 | 0.72m |
| Sunday | High | 08:09 | 4.47m | Sunday | Low | 14:49 | 0.82m | Sunday | High | 20:18 | 4.78m |
| Monday | Low | 03:08 | 0.54m | Monday | High | 08:42 | 4.65m | Monday | Low | 15:25 | 0.62m |
| Monday | High | 20:54 | 4.90m | Tuesday | Low | 03:44 | 0.47m | Tuesday | High | 09:17 | 4.76m |
| Tuesday | Low | 16:03 | 0.54m | Tuesday | High | 21:34 | 4.92m | Wednesday | Low | 04:23 | 0.51m |
| Wednesday | High | 09:55 | 4.78m | Wednesday | Low | 16:46 | 0.57m | Wednesday | High | 22:17 | 4.81m |
| Thursday | Low | 05:07 | 0.69m | Thursday | High | 10:37 | 4.68m | Thursday | Low | 17:34 | 0.72m |
