High and low water times and heights at Barmouth
Tidal predictions are available for the next 28 days. For information beyond this period, please consider using the POLTIPS·3 software package, available for purchase from the Marine Data Products Team.
Times in GMT, heights in metres above chart datum. For times in BST, add one hour.
Predictions DO NOT include meteorological effects.
(H - high water, L - low water)

© National Oceanography Centre, Liverpool
Sun 3rd
Dec 202306:10
1.90m L11:42
4.28m H19:08
1.87m L
Dec 202306:10
1.90m L11:42
4.28m H19:08
1.87m L
Mon 4th00:11
3.78m H06:51
2.11m L12:31
4.05m H20:09
1.99m L
3.78m H06:51
2.11m L12:31
4.05m H20:09
1.99m L
Tue 5th01:08
3.55m H07:48
2.25m L13:30
3.86m H21:24
2.00m L
3.55m H07:48
2.25m L13:30
3.86m H21:24
2.00m L
Wed 6th02:22
3.45m H09:15
2.28m L14:42
3.80m H22:30
1.91m L
3.45m H09:15
2.28m L14:42
3.80m H22:30
1.91m L
Thu 7th03:39
3.52m H10:36
2.16m L15:51
3.86m H23:21
1.77m L
3.52m H10:36
2.16m L15:51
3.86m H23:21
1.77m L
Fri 8th04:39
3.72m H11:32
1.96m L16:48
4.03m H
3.72m H11:32
1.96m L16:48
4.03m H
Sat 9th00:08
1.61m L05:24
3.98m H12:21
1.74m L17:33
4.24m H
1.61m L05:24
3.98m H12:21
1.74m L17:33
4.24m H
Sun 10th00:51
1.45m L06:03
4.27m H13:07
1.53m L18:16
4.47m H
1.45m L06:03
4.27m H13:07
1.53m L18:16
4.47m H
Mon 11th01:34
1.31m L06:43
4.56m H13:53
1.34m L18:58
4.69m H
1.31m L06:43
4.56m H13:53
1.34m L18:58
4.69m H
Tue 12th02:18
1.20m L07:24
4.81m H14:39
1.20m L19:41
4.86m H
1.20m L07:24
4.81m H14:39
1.20m L19:41
4.86m H
Wed 13th03:00
1.13m L08:05
4.99m H15:24
1.12m L20:24
4.95m H
1.13m L08:05
4.99m H15:24
1.12m L20:24
4.95m H
Thu 14th03:42
1.13m L08:48
5.09m H16:08
1.09m L21:08
4.95m H
1.13m L08:48
5.09m H16:08
1.09m L21:08
4.95m H
Fri 15th04:24
1.17m L09:32
5.11m H16:52
1.11m L21:54
4.87m H
1.17m L09:32
5.11m H16:52
1.11m L21:54
4.87m H
Sat 16th05:04
1.25m L10:18
5.06m H17:39
1.14m L22:41
4.72m H
1.25m L10:18
5.06m H17:39
1.14m L22:41
4.72m H
Sun 17th05:48
1.35m L11:07
4.95m H18:30
1.20m L23:32
4.51m H
1.35m L11:07
4.95m H18:30
1.20m L23:32
4.51m H
Mon 18th06:40
1.47m L12:00
4.80m H19:26
1.27m L
1.47m L12:00
4.80m H19:26
1.27m L
Tue 19th00:28
4.28m H07:39
1.58m L12:57
4.64m H20:25
1.34m L
4.28m H07:39
1.58m L12:57
4.64m H20:25
1.34m L
Wed 20th01:30
4.08m H08:43
1.66m L14:00
4.50m H21:28
1.39m L
4.08m H08:43
1.66m L14:00
4.50m H21:28
1.39m L
Thu 21st02:36
3.98m H09:51
1.68m L15:05
4.42m H22:32
1.40m L
3.98m H09:51
1.68m L15:05
4.42m H22:32
1.40m L
Fri 22nd03:45
4.01m H10:58
1.62m L16:13
4.42m H23:36
1.38m L
4.01m H10:58
1.62m L16:13
4.42m H23:36
1.38m L
Sat 23rd04:51
4.16m H12:04
1.51m L17:19
4.50m H
4.16m H12:04
1.51m L17:19
4.50m H
Sun 24th00:36
1.33m L05:51
4.37m H13:06
1.37m L18:17
4.61m H
1.33m L05:51
4.37m H13:06
1.37m L18:17
4.61m H
Mon 25th01:30
1.28m L06:43
4.59m H14:02
1.26m L19:08
4.69m H
1.28m L06:43
4.59m H14:02
1.26m L19:08
4.69m H
Tue 26th02:17
1.25m L07:30
4.77m H14:51
1.20m L19:53
4.73m H
1.25m L07:30
4.77m H14:51
1.20m L19:53
4.73m H
Wed 27th02:57
1.25m L08:12
4.88m H15:34
1.18m L20:34
4.72m H
1.25m L08:12
4.88m H15:34
1.18m L20:34
4.72m H
Thu 28th03:33
1.27m L08:52
4.92m H16:13
1.21m L21:12
4.67m H
1.27m L08:52
4.92m H16:13
1.21m L21:12
4.67m H
Fri 29th04:07
1.31m L09:30
4.90m H16:50
1.27m L21:49
4.58m H
1.31m L09:30
4.90m H16:50
1.27m L21:49
4.58m H
Sat 30th04:42
1.38m L10:06
4.83m H17:26
1.35m L22:25
4.45m H
1.38m L10:06
4.83m H17:26
1.35m L22:25
4.45m H
Disclaimer
While every effort has been made to ensure the accuracy of the information provided, no responsibility can be accepted by the National Oceanography Centre for any consequential loss or damage arising from its use.