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 28th
Apr 2015
06:16
4.48m H
12:38
1.82m L
19:03
4.45m H
Wed 29th01:01
2.08m L
07:18
4.63m H
13:33
1.63m L
19:54
4.66m H
Thu 30th01:52
1.83m L
08:06
4.83m H
14:18
1.42m L
20:33
4.88m H
Fri 1st
May 2015
02:32
1.57m L
08:45
5.02m H
14:54
1.23m L
21:07
5.08m H
Sat 2nd03:07
1.33m L
09:19
5.18m H
15:27
1.08m L
21:38
5.25m H
Sun 3rd03:39
1.14m L
09:52
5.30m H
15:58
0.97m L
22:09
5.39m H
Mon 4th04:12
0.99m L
10:25
5.38m H
16:30
0.92m L
22:42
5.48m H
Tue 5th04:45
0.90m L
10:59
5.41m H
17:03
0.91m L
23:16
5.53m H
Wed 6th05:20
0.88m L
11:35
5.38m H
17:38
0.96m L
23:52
5.51m H
Thu 7th05:57
0.91m L
12:13
5.31m H
18:16
1.07m L
Fri 8th00:31
5.43m H
06:39
1.01m L
12:54
5.18m H
18:58
1.23m L
Sat 9th01:14
5.30m H
07:26
1.14m L
13:42
5.00m H
19:48
1.44m L
Sun 10th02:03
5.13m H
08:21
1.30m L
14:39
4.81m H
20:48
1.65m L
Mon 11th03:03
4.97m H
09:26
1.42m L
15:49
4.67m H
22:00
1.78m L
Tue 12th04:14
4.88m H
10:39
1.43m L
17:09
4.67m H
23:15
1.73m L
Wed 13th05:30
4.93m H
11:52
1.30m L
18:24
4.83m H
Thu 14th00:25
1.53m L
06:39
5.12m H
12:57
1.07m L
19:25
5.07m H
Fri 15th01:26
1.24m L
07:39
5.35m H
13:54
0.83m L
20:17
5.32m H
Sat 16th02:19
0.94m L
08:32
5.57m H
14:44
0.64m L
21:03
5.54m H
Sun 17th03:08
0.69m L
09:21
5.73m H
15:30
0.52m L
21:48
5.70m H
Mon 18th03:54
0.52m L
10:08
5.80m H
16:15
0.50m L
22:32
5.78m H
Tue 19th04:40
0.46m L
10:54
5.77m H
16:58
0.59m L
23:15
5.76m H
Wed 20th05:26
0.52m L
11:39
5.63m H
17:42
0.76m L
23:58
5.66m H
Thu 21st06:11
0.68m L
12:25
5.42m H
18:24
1.01m L
Fri 22nd00:41
5.49m H
06:57
0.92m L
13:10
5.16m H
19:09
1.30m L
Sat 23rd01:24
5.26m H
07:44
1.19m L
13:56
4.89m H
19:54
1.60m L
Sun 24th02:09
5.01m H
08:34
1.47m L
14:46
4.64m H
20:45
1.90m L
Mon 25th03:00
4.77m H
09:30
1.71m L
15:44
4.44m H
21:45
2.13m 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.