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 Applications 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
Wed 22nd
Oct 2014
03:06
1.23m L
09:17
5.34m H
15:15
1.34m L
21:27
5.51m H
Thu 23rd03:38
1.08m L
09:48
5.51m H
15:48
1.15m L
22:00
5.62m H
Fri 24th04:09
0.98m L
10:18
5.64m H
16:20
1.02m L
22:33
5.67m H
Sat 25th04:40
0.94m L
10:52
5.71m H
16:54
0.97m L
23:09
5.66m H
Sun 26th05:15
0.96m L
11:27
5.72m H
17:31
0.99m L
23:45
5.60m H
Mon 27th05:51
1.06m L
12:06
5.66m H
18:11
1.08m L
Tue 28th00:27
5.46m H
06:32
1.23m L
12:48
5.53m H
18:57
1.23m L
Wed 29th01:12
5.26m H
07:18
1.46m L
13:36
5.34m H
19:49
1.43m L
Thu 30th02:07
5.02m H
08:15
1.73m L
14:33
5.14m H
20:54
1.61m L
Fri 31st03:15
4.81m H
09:27
1.94m L
15:44
4.99m H
22:09
1.69m L
Sat 1st
Nov 2014
04:39
4.73m H
10:47
1.98m L
17:05
5.00m H
23:28
1.58m L
Sun 2nd06:02
4.86m H
12:03
1.81m L
18:19
5.18m H
Mon 3rd00:39
1.34m L
07:09
5.10m H
13:07
1.52m L
19:21
5.43m H
Tue 4th01:38
1.06m L
08:02
5.36m H
14:01
1.21m L
20:14
5.67m H
Wed 5th02:27
0.83m L
08:48
5.59m H
14:49
0.94m L
21:00
5.85m H
Thu 6th03:12
0.67m L
09:30
5.76m H
15:33
0.74m L
21:45
5.94m H
Fri 7th03:54
0.62m L
10:10
5.85m H
16:16
0.66m L
22:28
5.93m H
Sat 8th04:36
0.67m L
10:51
5.86m H
16:59
0.69m L
23:12
5.81m H
Sun 9th05:16
0.82m L
11:32
5.78m H
17:42
0.84m L
23:54
5.60m H
Mon 10th05:56
1.06m L
12:12
5.62m H
18:25
1.06m L
Tue 11th00:36
5.34m H
06:36
1.34m L
12:52
5.41m H
19:09
1.34m L
Wed 12th01:19
5.06m H
07:18
1.66m L
13:33
5.17m H
19:56
1.63m L
Thu 13th02:05
4.79m H
08:04
1.98m L
14:19
4.93m H
20:48
1.89m L
Fri 14th02:58
4.54m H
08:58
2.27m L
15:15
4.71m H
21:50
2.09m L
Sat 15th04:05
4.39m H
10:05
2.46m L
16:24
4.59m H
23:00
2.15m L
Sun 16th05:21
4.38m H
11:20
2.48m L
17:38
4.61m H
Mon 17th00:09
2.06m L
06:30
4.53m H
12:28
2.32m L
18:44
4.76m H
Tue 18th01:04
1.86m L
07:24
4.77m H
13:21
2.06m L
19:36
4.97m 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.