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 30th
Apr 2016
03:27
4.67m H
09:50
1.76m L
16:15
4.43m H
22:27
2.04m L
Sun 1st
May 2016
04:43
4.63m H
11:06
1.69m L
17:38
4.52m H
23:44
1.90m L
Mon 2nd06:00
4.78m H
12:18
1.44m L
18:49
4.77m H
Tue 3rd00:51
1.58m L
07:04
5.06m H
13:18
1.09m L
19:45
5.09m H
Wed 4th01:46
1.20m L
07:58
5.39m H
14:11
0.73m L
20:33
5.41m H
Thu 5th02:35
0.82m L
08:48
5.69m H
14:58
0.44m L
21:18
5.68m H
Fri 6th03:21
0.50m L
09:35
5.93m H
15:45
0.25m L
22:02
5.87m H
Sat 7th04:08
0.29m L
10:22
6.05m H
16:30
0.20m L
22:47
5.96m H
Sun 8th04:54
0.21m L
11:10
6.04m H
17:16
0.30m L
23:33
5.93m H
Mon 9th05:43
0.27m L
11:59
5.88m H
18:03
0.52m L
Tue 10th00:20
5.80m H
06:33
0.47m L
12:49
5.62m H
18:52
0.84m L
Wed 11th01:09
5.57m H
07:26
0.76m L
13:42
5.28m H
19:44
1.22m L
Thu 12th02:00
5.29m H
08:23
1.09m L
14:39
4.93m H
20:41
1.60m L
Fri 13th02:58
5.00m H
09:25
1.40m L
15:45
4.64m H
21:46
1.90m L
Sat 14th04:06
4.75m H
10:35
1.62m L
17:00
4.48m H
22:59
2.07m L
Sun 15th05:21
4.63m H
11:45
1.69m L
18:14
4.48m H
Mon 16th00:11
2.05m L
06:32
4.65m H
12:50
1.63m L
19:15
4.61m H
Tue 17th01:12
1.91m L
07:30
4.76m H
13:43
1.50m L
20:03
4.78m H
Wed 18th02:02
1.71m L
08:15
4.90m H
14:26
1.36m L
20:42
4.96m H
Thu 19th02:42
1.51m L
08:54
5.04m H
15:03
1.23m L
21:15
5.13m H
Fri 20th03:18
1.32m L
09:30
5.15m H
15:36
1.13m L
21:48
5.27m H
Sat 21st03:51
1.18m L
10:03
5.23m H
16:08
1.08m L
22:19
5.37m H
Sun 22nd04:24
1.09m L
10:36
5.27m H
16:39
1.06m L
22:51
5.43m H
Mon 23rd04:57
1.04m L
11:10
5.26m H
17:12
1.09m L
23:25
5.44m H
Tue 24th05:32
1.05m L
11:45
5.21m H
17:47
1.16m L
Wed 25th00:01
5.41m H
06:09
1.10m L
12:23
5.13m H
18:24
1.27m L
Thu 26th00:39
5.33m H
06:48
1.19m L
13:03
5.01m H
19:05
1.41m L
Fri 27th01:21
5.21m H
07:33
1.29m L
13:48
4.87m H
19:52
1.58m 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.