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
Sun 19th
Nov 2017
04:27
1.07m L
10:38
5.62m H
16:42
1.16m L
22:55
5.50m H
Mon 20th04:59
1.16m L
11:10
5.60m H
17:16
1.22m L
23:29
5.40m H
Tue 21st05:31
1.29m L
11:43
5.54m H
17:51
1.33m L
Wed 22nd00:03
5.27m H
06:05
1.46m L
12:17
5.44m H
18:27
1.47m L
Thu 23rd00:38
5.10m H
06:40
1.66m L
12:53
5.30m H
19:06
1.65m L
Fri 24th01:16
4.91m H
07:19
1.89m L
13:33
5.12m H
19:50
1.83m L
Sat 25th02:02
4.71m H
08:06
2.12m L
14:21
4.93m H
20:42
1.99m L
Sun 26th02:57
4.53m H
09:03
2.31m L
15:20
4.78m H
21:45
2.08m L
Mon 27th04:09
4.44m H
10:13
2.39m L
16:30
4.72m H
22:54
2.03m L
Tue 28th05:26
4.51m H
11:27
2.28m L
17:42
4.82m H
Wed 29th00:01
1.83m L
06:32
4.73m H
12:30
2.02m L
18:44
5.04m H
Thu 30th00:58
1.53m L
07:26
5.03m H
13:24
1.67m L
19:36
5.31m H
Fri 1st
Dec 2017
01:48
1.21m L
08:12
5.33m H
14:13
1.32m L
20:24
5.59m H
Sat 2nd02:35
0.92m L
08:56
5.61m H
14:58
0.99m L
21:10
5.83m H
Sun 3rd03:19
0.69m L
09:38
5.85m H
15:43
0.72m L
21:57
6.00m H
Mon 4th04:03
0.56m L
10:21
6.01m H
16:30
0.56m L
22:44
6.06m H
Tue 5th04:49
0.55m L
11:07
6.08m H
17:18
0.51m L
23:33
6.00m H
Wed 6th05:37
0.67m L
11:54
6.03m H
18:09
0.59m L
Thu 7th00:24
5.82m H
06:27
0.89m L
12:45
5.89m H
19:03
0.77m L
Fri 8th01:18
5.56m H
07:21
1.19m L
13:38
5.67m H
20:02
1.01m L
Sat 9th02:18
5.25m H
08:18
1.51m L
14:37
5.42m H
21:04
1.27m L
Sun 10th03:24
4.98m H
09:24
1.80m L
15:44
5.18m H
22:12
1.49m L
Mon 11th04:36
4.80m H
10:34
1.98m L
16:57
5.03m H
23:22
1.60m L
Tue 12th05:50
4.77m H
11:46
2.02m L
18:09
4.99m H
Wed 13th00:29
1.60m L
06:55
4.85m H
12:52
1.93m L
19:12
5.03m H
Thu 14th01:27
1.54m L
07:48
4.99m H
13:48
1.78m L
20:05
5.11m H
Fri 15th02:16
1.45m L
08:33
5.15m H
14:36
1.61m L
20:48
5.20m H
Sat 16th02:57
1.36m L
09:11
5.30m H
15:15
1.46m L
21:27
5.27m 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.