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 28th
Feb 202103:58
0.79m L08:58
5.30m H16:33
0.69m L21:19
5.16m H
Feb 202103:58
0.79m L08:58
5.30m H16:33
0.69m L21:19
5.16m H
Mon 1st
Mar 202104:39
0.71m L09:37
5.42m H17:11
0.66m L21:58
5.18m H
Mar 202104:39
0.71m L09:37
5.42m H17:11
0.66m L21:58
5.18m H
Tue 2nd05:15
0.69m L10:16
5.42m H17:45
0.70m L22:38
5.09m H
0.69m L10:16
5.42m H17:45
0.70m L22:38
5.09m H
Wed 3rd05:48
0.74m L10:57
5.30m H18:18
0.83m L23:19
4.89m H
0.74m L10:57
5.30m H18:18
0.83m L23:19
4.89m H
Thu 4th06:22
0.89m L11:39
5.03m H18:55
1.06m L
0.89m L11:39
5.03m H18:55
1.06m L
Fri 5th00:03
4.58m H07:06
1.15m L12:27
4.62m H19:42
1.39m L
4.58m H07:06
1.15m L12:27
4.62m H19:42
1.39m L
Sat 6th00:54
4.21m H08:04
1.47m L13:22
4.14m H20:49
1.72m L
4.21m H08:04
1.47m L13:22
4.14m H20:49
1.72m L
Sun 7th01:58
3.86m H09:27
1.72m L14:38
3.74m H22:27
1.86m L
3.86m H09:27
1.72m L14:38
3.74m H22:27
1.86m L
Mon 8th03:27
3.71m H11:09
1.68m L16:21
3.65m H23:52
1.72m L
3.71m H11:09
1.68m L16:21
3.65m H23:52
1.72m L
Tue 9th05:00
3.89m H12:29
1.43m L17:40
3.89m H
3.89m H12:29
1.43m L17:40
3.89m H
Wed 10th00:59
1.47m L06:05
4.26m H13:35
1.15m L18:36
4.23m H
1.47m L06:05
4.26m H13:35
1.15m L18:36
4.23m H
Thu 11th01:56
1.22m L06:57
4.64m H14:30
0.93m L19:22
4.53m H
1.22m L06:57
4.64m H14:30
0.93m L19:22
4.53m H
Fri 12th02:44
1.03m L07:42
4.93m H15:14
0.81m L20:02
4.75m H
1.03m L07:42
4.93m H15:14
0.81m L20:02
4.75m H
Sat 13th03:24
0.91m L08:21
5.10m H15:51
0.78m L20:38
4.87m H
0.91m L08:21
5.10m H15:51
0.78m L20:38
4.87m H
Sun 14th03:57
0.86m L08:57
5.16m H16:21
0.81m L21:11
4.90m H
0.86m L08:57
5.16m H16:21
0.81m L21:11
4.90m H
Mon 15th04:25
0.86m L09:30
5.12m H16:45
0.86m L21:42
4.86m H
0.86m L09:30
5.12m H16:45
0.86m L21:42
4.86m H
Tue 16th04:51
0.90m L10:00
5.02m H17:07
0.93m L22:12
4.75m H
0.90m L10:00
5.02m H17:07
0.93m L22:12
4.75m H
Wed 17th05:15
0.99m L10:30
4.84m H17:30
1.05m L22:41
4.59m H
0.99m L10:30
4.84m H17:30
1.05m L22:41
4.59m H
Thu 18th05:42
1.14m L11:00
4.60m H17:57
1.23m L23:12
4.36m H
1.14m L11:00
4.60m H17:57
1.23m L23:12
4.36m H
Fri 19th06:12
1.37m L11:31
4.29m H18:27
1.48m L23:44
4.08m H
1.37m L11:31
4.29m H18:27
1.48m L23:44
4.08m H
Sat 20th06:46
1.64m L12:06
3.94m H19:03
1.78m L
1.64m L12:06
3.94m H19:03
1.78m L
Sun 21st00:22
3.79m H07:29
1.93m L12:49
3.59m H19:48
2.07m L
3.79m H07:29
1.93m L12:49
3.59m H19:48
2.07m L
Mon 22nd01:10
3.51m H08:43
2.14m L13:50
3.28m H21:42
2.23m L
3.51m H08:43
2.14m L13:50
3.28m H21:42
2.23m L
Tue 23rd02:24
3.33m H10:56
2.02m L15:45
3.22m H23:20
2.01m L
3.33m H10:56
2.02m L15:45
3.22m H23:20
2.01m L
Wed 24th04:25
3.47m H11:57
1.70m L17:20
3.57m H
3.47m H11:57
1.70m L17:20
3.57m H
Thu 25th00:15
1.69m L05:36
3.89m H12:50
1.37m L18:08
4.03m H
1.69m L05:36
3.89m H12:50
1.37m L18:08
4.03m H
Fri 26th01:06
1.36m L06:24
4.37m H13:43
1.08m L18:51
4.48m H
1.36m L06:24
4.37m H13:43
1.08m L18:51
4.48m H
Sat 27th01:58
1.08m L07:09
4.81m H14:38
0.85m L19:33
4.87m H
1.08m L07:09
4.81m H14:38
0.85m L19:33
4.87m H
Disclaimer
While every effort has been made to ensure the accuracy of the information provided, no responsibility can be accepted by the National Oceanographiy Centre for any consequential loss or damage arising from its use.