Swansea tide calendar, May 2027
High and low tides in local time (Europe/London), heights in m above Lowest Astronomical Tide, calculated by Marinalo over 19 years.
| Day | Tide 1 | Tide 2 | Tide 3 | Tide 4 |
|---|---|---|---|---|
| Sat 1 | High 02:46 6.9 m | Low 09:16 3.1 m | High 15:30 7.0 m | Low 21:35 3.0 m |
| Sun 2 | High 03:53 7.4 m | Low 10:13 2.6 m | High 16:26 7.5 m | Low 22:29 2.5 m |
| Mon 3 | High 04:45 7.9 m | Low 10:58 2.1 m | High 17:12 8.1 m | Low 23:15 1.9 m |
| Tue 4 | High 05:30 8.5 m | Low 11:39 1.6 m | High 17:54 8.6 m | Low 23:56 1.5 m |
| Wed 5 | High 06:11 8.9 m | Low 12:18 1.2 m | High 18:34 9.0 m | |
| Thu 6 | Low 00:37 1.1 m | High 06:51 9.2 m | Low 12:57 1.0 m | High 19:14 9.3 m |
| Fri 7 | Low 01:17 0.9 m | High 07:32 9.4 m | Low 13:36 1.0 m | High 19:55 9.4 m |
| Sat 8 | Low 01:57 0.9 m | High 08:13 9.3 m | Low 14:16 1.1 m | High 20:37 9.3 m |
| Sun 9 | Low 02:38 1.0 m | High 08:56 9.1 m | Low 14:57 1.3 m | High 21:20 9.1 m |
| Mon 10 | Low 03:21 1.2 m | High 09:41 8.8 m | Low 15:41 1.7 m | High 22:06 8.8 m |
| Tue 11 | Low 04:08 1.6 m | High 10:31 8.3 m | Low 16:31 2.1 m | High 22:59 8.4 m |
| Wed 12 | Low 05:05 2.1 m | High 11:30 7.9 m | Low 17:34 2.5 m | |
| Thu 13 | High 00:01 8.0 m | Low 06:19 2.4 m | High 12:40 7.5 m | Low 18:54 2.7 m |
| Fri 14 | High 01:15 7.8 m | Low 07:42 2.5 m | High 13:56 7.5 m | Low 20:14 2.7 m |
| Sat 15 | High 02:31 7.9 m | Low 08:56 2.3 m | High 15:08 7.8 m | Low 21:23 2.4 m |
| Sun 16 | High 03:39 8.2 m | Low 09:57 1.9 m | High 16:09 8.2 m | Low 22:22 1.9 m |
| Mon 17 | High 04:38 8.6 m | Low 10:49 1.6 m | High 17:03 8.5 m | Low 23:14 1.6 m |
| Tue 18 | High 05:29 8.9 m | Low 11:35 1.4 m | High 17:51 8.8 m | |
| Wed 19 | Low 00:00 1.4 m | High 06:14 9.0 m | Low 12:17 1.3 m | High 18:34 9.0 m |
| Thu 20 | Low 00:42 1.3 m | High 06:56 9.0 m | Low 12:56 1.3 m | High 19:15 9.0 m |
| Fri 21 | Low 01:21 1.4 m | High 07:35 8.9 m | Low 13:33 1.5 m | High 19:53 8.9 m |
| Sat 22 | Low 01:56 1.5 m | High 08:12 8.7 m | Low 14:07 1.6 m | High 20:28 8.7 m |
| Sun 23 | Low 02:29 1.7 m | High 08:47 8.5 m | Low 14:40 1.8 m | High 21:02 8.6 m |
| Mon 24 | Low 03:02 1.9 m | High 09:20 8.2 m | Low 15:14 2.0 m | High 21:35 8.4 m |
| Tue 25 | Low 03:34 2.1 m | High 09:55 7.9 m | Low 15:49 2.2 m | High 22:09 8.1 m |
| Wed 26 | Low 04:10 2.3 m | High 10:33 7.7 m | Low 16:27 2.5 m | High 22:47 7.8 m |
| Thu 27 | Low 04:51 2.6 m | High 11:16 7.3 m | Low 17:13 2.8 m | High 23:33 7.5 m |
| Fri 28 | Low 05:43 2.9 m | High 12:10 7.1 m | Low 18:11 3.1 m | |
| Sat 29 | High 00:30 7.2 m | Low 06:53 3.1 m | High 13:16 6.9 m | Low 19:21 3.2 m |
| Sun 30 | High 01:39 7.2 m | Low 08:08 3.1 m | High 14:25 7.1 m | Low 20:31 3.0 m |
| Mon 31 | High 02:49 7.3 m | Low 09:13 2.8 m | High 15:27 7.4 m | Low 21:33 2.7 m |
Calculated by Marinalo from the Mumbles tide station: TICON-4: Hart-Davis et al., DGFI-TUM, CC BY 4.0, doi:10.17882/109129. Not for navigation. How we calculate tides.