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
Tue 4th
Aug 2015
00:31
6.05m H
06:45
0.38m L
13:00
5.61m H
19:03
0.70m L
Wed 5th01:18
5.90m H
07:34
0.59m L
13:49
5.40m H
19:54
0.94m L
Thu 6th02:09
5.64m H
08:27
0.90m L
14:43
5.15m H
20:51
1.24m L
Fri 7th03:06
5.32m H
09:25
1.24m L
15:45
4.90m H
21:57
1.53m L
Sat 8th04:13
5.00m H
10:33
1.55m L
17:00
4.74m H
23:12
1.71m L
Sun 9th05:33
4.79m H
11:48
1.72m L
18:20
4.75m H
Mon 10th00:31
1.71m L
06:54
4.77m H
13:03
1.72m L
19:31
4.90m H
Tue 11th01:42
1.55m L
08:01
4.88m H
14:06
1.58m L
20:27
5.11m H
Wed 12th02:39
1.33m L
08:54
5.03m H
14:56
1.41m L
21:12
5.31m H
Thu 13th03:26
1.14m L
09:36
5.16m H
15:36
1.25m L
21:51
5.46m H
Fri 14th04:05
0.99m L
10:13
5.26m H
16:12
1.13m L
22:26
5.56m H
Sat 15th04:39
0.91m L
10:47
5.33m H
16:45
1.06m L
22:59
5.60m H
Sun 16th05:12
0.89m L
11:19
5.34m H
17:16
1.05m L
23:31
5.58m H
Mon 17th05:44
0.93m L
11:51
5.32m H
17:48
1.10m L
Tue 18th00:03
5.51m H
06:15
1.02m L
12:22
5.26m H
18:20
1.20m L
Wed 19th00:34
5.40m H
06:48
1.16m L
12:55
5.15m H
18:54
1.36m L
Thu 20th01:08
5.25m H
07:21
1.35m L
13:30
5.02m H
19:30
1.56m L
Fri 21st01:44
5.06m H
07:59
1.57m L
14:11
4.85m H
20:13
1.79m L
Sat 22nd02:26
4.83m H
08:44
1.81m L
14:59
4.67m H
21:06
2.01m L
Sun 23rd03:18
4.60m H
09:42
2.03m L
16:01
4.52m H
22:13
2.17m L
Mon 24th04:32
4.43m H
10:55
2.14m L
17:21
4.50m H
23:33
2.15m L
Tue 25th05:58
4.44m H
12:13
2.04m L
18:38
4.68m H
Wed 26th00:48
1.90m L
07:14
4.66m H
13:20
1.76m L
19:40
4.99m H
Thu 27th01:49
1.51m L
08:12
4.97m H
14:14
1.40m L
20:30
5.34m H
Fri 28th02:41
1.08m L
09:00
5.31m H
15:01
1.02m L
21:15
5.69m H
Sat 29th03:26
0.67m L
09:43
5.60m H
15:45
0.69m L
21:57
6.00m H
Sun 30th04:09
0.35m L
10:25
5.82m H
16:27
0.45m L
22:40
6.21m H
Mon 31st04:53
0.17m L
11:08
5.94m H
17:10
0.34m L
23:24
6.29m 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.