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
Sat 4th
Jul 2015
05:31
0.60m L
11:46
5.53m H
17:48
0.75m L
Sun 5th00:03
5.84m H
06:17
0.56m L
12:32
5.50m H
18:34
0.81m L
Mon 6th00:49
5.79m H
07:04
0.62m L
13:20
5.39m H
19:23
0.95m L
Tue 7th01:38
5.67m H
07:55
0.76m L
14:12
5.22m H
20:16
1.15m L
Wed 8th02:30
5.49m H
08:51
0.96m L
15:09
5.03m H
21:15
1.36m L
Thu 9th03:30
5.27m H
09:52
1.18m L
16:15
4.87m H
22:22
1.53m L
Fri 10th04:36
5.08m H
11:00
1.35m L
17:27
4.80m H
23:33
1.60m L
Sat 11th05:50
4.98m H
12:09
1.43m L
18:39
4.86m H
Sun 12th00:45
1.54m L
07:03
4.98m H
13:15
1.40m L
19:42
5.01m H
Mon 13th01:50
1.38m L
08:06
5.07m H
14:15
1.31m L
20:36
5.20m H
Tue 14th02:47
1.19m L
09:00
5.18m H
15:05
1.19m L
21:23
5.37m H
Wed 15th03:36
1.01m L
09:46
5.27m H
15:49
1.09m L
22:05
5.51m H
Thu 16th04:18
0.89m L
10:28
5.33m H
16:29
1.03m L
22:45
5.58m H
Fri 17th04:58
0.84m L
11:07
5.33m H
17:06
1.02m L
23:21
5.59m H
Sat 18th05:36
0.86m L
11:45
5.29m H
17:42
1.07m L
23:57
5.53m H
Sun 19th06:12
0.94m L
12:20
5.21m H
18:16
1.18m L
Mon 20th00:32
5.43m H
06:48
1.07m L
12:55
5.10m H
18:51
1.33m L
Tue 21st01:06
5.29m H
07:24
1.24m L
13:30
4.97m H
19:29
1.51m L
Wed 22nd01:42
5.12m H
08:02
1.44m L
14:10
4.81m H
20:09
1.72m L
Thu 23rd02:22
4.93m H
08:45
1.65m L
14:54
4.65m H
20:57
1.94m L
Fri 24th03:10
4.72m H
09:34
1.85m L
15:49
4.51m H
21:54
2.12m L
Sat 25th04:09
4.54m H
10:35
2.00m L
16:56
4.44m H
23:02
2.19m L
Sun 26th05:21
4.45m H
11:44
2.01m L
18:08
4.51m H
Mon 27th00:15
2.10m L
06:36
4.51m H
12:51
1.88m L
19:13
4.71m H
Tue 28th01:19
1.85m L
07:40
4.70m H
13:48
1.64m L
20:08
4.99m H
Wed 29th02:14
1.52m L
08:33
4.95m H
14:37
1.35m L
20:54
5.28m H
Thu 30th03:02
1.16m L
09:19
5.22m H
15:21
1.05m L
21:36
5.57m H
Fri 31st03:47
0.81m L
10:03
5.46m H
16:05
0.79m L
22:18
5.83m H

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.