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
Mon 25th
May 2015
03:00
4.77m H
09:30
1.71m L
15:44
4.44m H
21:45
2.13m L
Tue 26th04:00
4.58m H
10:33
1.86m L
16:50
4.34m H
22:53
2.24m L
Wed 27th05:07
4.49m H
11:39
1.89m L
18:00
4.38m H
Thu 28th00:01
2.19m L
06:15
4.53m H
12:39
1.79m L
19:00
4.54m H
Fri 29th01:00
2.02m L
07:15
4.66m H
13:30
1.63m L
19:49
4.74m H
Sat 30th01:49
1.78m L
08:03
4.83m H
14:14
1.45m L
20:30
4.96m H
Sun 31st02:30
1.53m L
08:45
5.00m H
14:52
1.28m L
21:06
5.16m H
Mon 1st
Jun 2015
03:09
1.30m L
09:23
5.15m H
15:28
1.12m L
21:42
5.34m H
Tue 2nd03:46
1.10m L
10:00
5.27m H
16:04
1.00m L
22:18
5.48m H
Wed 3rd04:24
0.94m L
10:38
5.36m H
16:42
0.93m L
22:56
5.58m H
Thu 4th05:03
0.84m L
11:18
5.40m H
17:21
0.91m L
23:35
5.63m H
Fri 5th05:44
0.80m L
12:00
5.38m H
18:02
0.95m L
Sat 6th00:18
5.61m H
06:29
0.82m L
12:45
5.30m H
18:48
1.07m L
Sun 7th01:03
5.52m H
07:17
0.91m L
13:33
5.16m H
19:38
1.23m L
Mon 8th01:53
5.39m H
08:11
1.03m L
14:29
5.00m H
20:34
1.41m L
Tue 9th02:48
5.24m H
09:11
1.15m L
15:32
4.86m H
21:39
1.56m L
Wed 10th03:52
5.11m H
10:17
1.24m L
16:43
4.79m H
22:48
1.61m L
Thu 11th05:03
5.06m H
11:26
1.26m L
17:55
4.84m H
23:58
1.53m L
Fri 12th06:13
5.10m H
12:32
1.19m L
19:00
4.98m H
Sat 13th01:03
1.37m L
07:18
5.20m H
13:32
1.08m L
19:57
5.17m H
Sun 14th02:01
1.15m L
08:15
5.33m H
14:27
0.97m L
20:48
5.35m H
Mon 15th02:54
0.95m L
09:07
5.44m H
15:15
0.88m L
21:33
5.51m H
Tue 16th03:43
0.80m L
09:55
5.50m H
16:00
0.84m L
22:17
5.62m H
Wed 17th04:29
0.72m L
10:40
5.50m H
16:42
0.86m L
23:00
5.65m H
Thu 18th05:12
0.72m L
11:24
5.44m H
17:24
0.94m L
23:41
5.61m H
Fri 19th05:55
0.81m L
12:06
5.31m H
18:04
1.08m L
Sat 20th00:21
5.50m H
06:36
0.95m L
12:47
5.15m H
18:43
1.26m L
Sun 21st01:00
5.34m H
07:18
1.14m L
13:27
4.97m H
19:24
1.48m 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.