High and low water times and heights at Holyhead

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)

Prediction chart   UK & Ireland
© National Oceanography Centre, Liverpool
Fri 23rd
Apr 2021
00:53
1.97m L
07:12
4.75m H
13:28
1.40m L
19:51
4.86m H
Sat 24th01:47
1.54m L
08:02
5.11m H
14:16
0.97m L
20:34
5.20m H
Sun 25th02:31
1.11m L
08:45
5.47m H
14:59
0.60m L
21:15
5.51m H
Mon 26th03:13
0.73m L
09:27
5.77m H
15:39
0.32m L
21:54
5.75m H
Tue 27th03:54
0.44m L
10:09
5.98m H
16:21
0.18m L
22:35
5.89m H
Wed 28th04:36
0.29m L
10:53
6.06m H
17:04
0.21m L
23:17
5.91m H
Thu 29th05:21
0.28m L
11:39
5.98m H
17:48
0.40m L
Fri 30th00:02
5.82m H
06:09
0.43m L
12:27
5.75m H
18:36
0.72m L
Sat 1st
May 2021
00:48
5.62m H
07:00
0.71m L
13:20
5.40m H
19:27
1.15m L
Sun 2nd01:39
5.33m H
07:57
1.06m L
14:19
4.99m H
20:27
1.59m L
Mon 3rd02:39
5.03m H
09:06
1.41m L
15:33
4.63m H
21:38
1.95m L
Tue 4th03:52
4.77m H
10:24
1.63m L
17:02
4.45m H
23:00
2.11m L
Wed 5th05:17
4.68m H
11:46
1.66m L
18:25
4.49m H
Thu 6th00:18
2.04m L
06:34
4.75m H
12:57
1.54m L
19:30
4.65m H
Fri 7th01:22
1.84m L
07:34
4.90m H
13:53
1.37m L
20:17
4.83m H
Sat 8th02:11
1.60m L
08:20
5.05m H
14:35
1.22m L
20:54
4.98m H
Sun 9th02:51
1.39m L
08:58
5.17m H
15:10
1.11m L
21:26
5.11m H
Mon 10th03:25
1.22m L
09:33
5.27m H
15:42
1.04m L
21:56
5.22m H
Tue 11th03:57
1.11m L
10:05
5.32m H
16:12
1.03m L
22:25
5.29m H
Wed 12th04:29
1.07m L
10:38
5.32m H
16:41
1.06m L
22:55
5.32m H
Thu 13th05:00
1.09m L
11:10
5.28m H
17:12
1.14m L
23:26
5.30m H
Fri 14th05:33
1.16m L
11:44
5.18m H
17:43
1.27m L
23:58
5.24m H
Sat 15th06:08
1.28m L
12:19
5.05m H
18:17
1.43m L
Sun 16th00:33
5.13m H
06:45
1.43m L
12:57
4.88m H
18:54
1.63m L
Mon 17th01:10
4.99m H
07:28
1.60m L
13:40
4.69m H
19:38
1.84m L
Tue 18th01:55
4.81m H
08:19
1.76m L
14:33
4.49m H
20:33
2.04m L
Wed 19th02:51
4.65m H
09:22
1.85m L
15:41
4.37m H
21:42
2.16m L
Thu 20th04:01
4.56m H
10:34
1.81m L
17:00
4.40m H
22:58
2.10m L

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.

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