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 19th
Nov 2018
01:12
1.81m L
07:38
4.82m H
13:33
1.97m L
19:42
5.10m H
Tue 20th01:55
1.52m L
08:18
5.08m H
14:15
1.65m L
20:23
5.33m H
Wed 21st02:33
1.26m L
08:53
5.33m H
14:52
1.35m L
21:02
5.54m H
Thu 22nd03:09
1.03m L
09:27
5.55m H
15:30
1.10m L
21:40
5.71m H
Fri 23rd03:46
0.87m L
10:03
5.72m H
16:08
0.92m L
22:19
5.82m H
Sat 24th04:24
0.78m L
10:42
5.84m H
16:48
0.81m L
23:01
5.85m H
Sun 25th05:05
0.79m L
11:22
5.87m H
17:32
0.81m L
23:45
5.78m H
Mon 26th05:48
0.91m L
12:06
5.81m H
18:19
0.90m L
Tue 27th00:34
5.62m H
06:36
1.13m L
12:54
5.66m H
19:12
1.07m L
Wed 28th01:27
5.38m H
07:30
1.41m L
13:48
5.46m H
20:12
1.27m L
Thu 29th02:29
5.11m H
08:32
1.70m L
14:51
5.25m H
21:21
1.44m L
Fri 30th03:42
4.90m H
09:43
1.91m L
16:04
5.11m H
22:34
1.51m L
Sat 1st
Dec 2018
05:01
4.84m H
11:00
1.96m L
17:22
5.10m H
23:48
1.46m L
Sun 2nd06:15
4.92m H
12:12
1.85m L
18:33
5.19m H
Mon 3rd00:53
1.33m L
07:17
5.09m H
13:14
1.66m L
19:32
5.33m H
Tue 4th01:48
1.19m L
08:07
5.26m H
14:07
1.44m L
20:23
5.45m H
Wed 5th02:36
1.09m L
08:51
5.43m H
14:53
1.26m L
21:07
5.53m H
Thu 6th03:18
1.03m L
09:30
5.56m H
15:35
1.14m L
21:48
5.57m H
Fri 7th03:56
1.02m L
10:08
5.65m H
16:15
1.08m L
22:28
5.54m H
Sat 8th04:33
1.07m L
10:45
5.67m H
16:53
1.10m L
23:06
5.46m H
Sun 9th05:09
1.18m L
11:21
5.64m H
17:30
1.19m L
23:44
5.33m H
Mon 10th05:45
1.33m L
11:57
5.55m H
18:08
1.31m L
Tue 11th00:20
5.17m H
06:20
1.51m L
12:33
5.42m H
18:46
1.47m L
Wed 12th00:57
5.00m H
06:57
1.72m L
13:09
5.27m H
19:27
1.64m L
Thu 13th01:37
4.81m H
07:39
1.95m L
13:51
5.09m H
20:12
1.82m L
Fri 14th02:24
4.62m H
08:26
2.17m L
14:39
4.91m H
21:03
1.98m L
Sat 15th03:20
4.47m H
09:23
2.34m L
15:37
4.75m H
22:03
2.07m L
Sun 16th04:28
4.40m H
10:30
2.40m L
16:45
4.69m H
23:09
2.04m 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.