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 16th
Jan 2018
03:51
1.37m L
10:03
5.40m H
16:12
1.31m L
22:24
5.21m H
Wed 17th04:24
1.27m L
10:36
5.51m H
16:45
1.19m L
22:56
5.26m H
Thu 18th04:56
1.21m L
11:08
5.58m H
17:18
1.12m L
23:28
5.28m H
Fri 19th05:28
1.18m L
11:41
5.60m H
17:51
1.10m L
Sat 20th00:01
5.26m H
06:01
1.21m L
12:15
5.57m H
18:26
1.13m L
Sun 21st00:36
5.20m H
06:36
1.28m L
12:51
5.50m H
19:01
1.19m L
Mon 22nd01:12
5.10m H
07:13
1.39m L
13:29
5.38m H
19:41
1.29m L
Tue 23rd01:52
4.98m H
07:55
1.53m L
14:10
5.24m H
20:25
1.41m L
Wed 24th02:39
4.84m H
08:45
1.70m L
15:00
5.08m H
21:19
1.55m L
Thu 25th03:36
4.71m H
09:46
1.84m L
16:00
4.93m H
22:24
1.65m L
Fri 26th04:46
4.64m H
10:59
1.90m L
17:14
4.86m H
23:37
1.66m L
Sat 27th06:05
4.72m H
12:15
1.78m L
18:32
4.94m H
Sun 28th00:48
1.52m L
07:17
4.94m H
13:24
1.50m L
19:42
5.15m H
Mon 29th01:52
1.28m L
08:17
5.25m H
14:25
1.14m L
20:42
5.41m H
Tue 30th02:48
1.00m L
09:09
5.58m H
15:21
0.77m L
21:36
5.65m H
Wed 31st03:39
0.75m L
09:57
5.86m H
16:11
0.47m L
22:24
5.82m H
Thu 1st
Feb 2018
04:27
0.57m L
10:43
6.06m H
16:59
0.28m L
23:12
5.88m H
Fri 2nd05:12
0.49m L
11:29
6.14m H
17:45
0.25m L
23:57
5.82m H
Sat 3rd05:57
0.54m L
12:14
6.08m H
18:30
0.37m L
Sun 4th00:42
5.66m H
06:41
0.71m L
12:59
5.90m H
19:16
0.62m L
Mon 5th01:27
5.41m H
07:26
0.98m L
13:43
5.61m H
20:02
0.96m L
Tue 6th02:12
5.12m H
08:12
1.31m L
14:30
5.26m H
20:51
1.34m L
Wed 7th03:00
4.82m H
09:03
1.68m L
15:21
4.90m H
21:45
1.72m L
Thu 8th03:56
4.55m H
10:04
2.01m L
16:23
4.58m H
22:51
2.01m L
Fri 9th05:06
4.39m H
11:19
2.21m L
17:42
4.39m H
Sat 10th00:05
2.13m L
06:27
4.40m H
12:39
2.20m L
19:06
4.42m H
Sun 11th01:15
2.06m L
07:37
4.58m H
13:47
2.02m L
20:09
4.58m H
Mon 12th02:12
1.87m L
08:28
4.83m H
14:39
1.75m L
20:57
4.79m 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.