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
Thu 29th
Jun 2017
01:48
5.54m H
08:09
0.87m L
14:24
5.08m H
20:23
1.36m L
Fri 30th02:40
5.27m H
09:04
1.17m L
15:20
4.82m H
21:19
1.65m L
Sat 1st
Jul 2017
03:37
4.99m H
10:03
1.44m L
16:21
4.62m H
22:22
1.89m L
Sun 2nd04:41
4.77m H
11:06
1.65m L
17:28
4.53m H
23:30
2.01m L
Mon 3rd05:49
4.64m H
12:10
1.74m L
18:34
4.55m H
Tue 4th00:36
1.99m L
06:56
4.63m H
13:09
1.72m L
19:31
4.68m H
Wed 5th01:35
1.88m L
07:52
4.70m H
14:01
1.63m L
20:19
4.85m H
Thu 6th02:24
1.70m L
08:39
4.82m H
14:45
1.51m L
21:00
5.03m H
Fri 7th03:07
1.52m L
09:21
4.95m H
15:24
1.40m L
21:36
5.20m H
Sat 8th03:45
1.35m L
09:57
5.05m H
15:58
1.30m L
22:10
5.33m H
Sun 9th04:20
1.22m L
10:31
5.12m H
16:32
1.22m L
22:44
5.42m H
Mon 10th04:54
1.12m L
11:06
5.16m H
17:06
1.18m L
23:18
5.48m H
Tue 11th05:29
1.07m L
11:40
5.17m H
17:40
1.17m L
23:54
5.49m H
Wed 12th06:04
1.05m L
12:16
5.15m H
18:16
1.21m L
Thu 13th00:30
5.45m H
06:42
1.08m L
12:54
5.09m H
18:54
1.29m L
Fri 14th01:09
5.37m H
07:21
1.14m L
13:35
5.01m H
19:36
1.40m L
Sat 15th01:51
5.27m H
08:06
1.22m L
14:21
4.90m H
20:25
1.53m L
Sun 16th02:39
5.15m H
08:57
1.33m L
15:14
4.80m H
21:21
1.66m L
Mon 17th03:35
5.02m H
09:57
1.42m L
16:18
4.73m H
22:28
1.72m L
Tue 18th04:42
4.94m H
11:04
1.46m L
17:30
4.75m H
23:39
1.67m L
Wed 19th05:54
4.96m H
12:14
1.40m L
18:42
4.90m H
Thu 20th00:49
1.49m L
07:06
5.09m H
13:19
1.24m L
19:45
5.14m H
Fri 21st01:53
1.20m L
08:09
5.29m H
14:18
1.04m L
20:41
5.41m H
Sat 22nd02:51
0.89m L
09:06
5.49m H
15:12
0.84m L
21:31
5.67m H
Sun 23rd03:44
0.61m L
09:58
5.65m H
16:02
0.69m L
22:19
5.87m H
Mon 24th04:34
0.41m L
10:48
5.73m H
16:48
0.61m L
23:06
5.97m H
Tue 25th05:21
0.34m L
11:34
5.71m H
17:34
0.63m L
23:51
5.96m H
Wed 26th06:08
0.40m L
12:21
5.60m H
18:19
0.76m L

Disclaimer

While every effort has been made to ensure the accuracy of the information provided, no responsibility can be accepted by the Natural Environment Research Council for any consequential loss or damage arising from its use.