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
Thu 26th
Feb 2015
03:42
4.74m H
10:02
1.68m L
16:19
4.69m H
22:37
1.90m L
Fri 27th05:03
4.53m H
11:23
1.90m L
17:48
4.48m H
23:59
2.05m L
Sat 28th06:32
4.54m H
12:46
1.87m L
19:12
4.53m H
Sun 1st
Mar 2015
01:17
1.96m L
07:43
4.72m H
13:55
1.67m L
20:15
4.71m H
Mon 2nd02:15
1.75m L
08:35
4.96m H
14:45
1.42m L
21:00
4.91m H
Tue 3rd03:00
1.50m L
09:15
5.17m H
15:25
1.20m L
21:36
5.09m H
Wed 4th03:36
1.28m L
09:48
5.34m H
15:59
1.02m L
22:07
5.23m H
Thu 5th04:06
1.10m L
10:19
5.47m H
16:30
0.91m L
22:36
5.34m H
Fri 6th04:36
0.98m L
10:48
5.54m H
16:59
0.85m L
23:05
5.40m H
Sat 7th05:04
0.91m L
11:18
5.57m H
17:28
0.85m L
23:35
5.42m H
Sun 8th05:34
0.91m L
11:48
5.53m H
17:57
0.92m L
Mon 9th00:06
5.38m H
06:05
0.98m L
12:20
5.44m H
18:28
1.04m L
Tue 10th00:38
5.29m H
06:38
1.10m L
12:53
5.30m H
19:00
1.20m L
Wed 11th01:12
5.16m H
07:14
1.28m L
13:28
5.12m H
19:38
1.41m L
Thu 12th01:50
4.99m H
07:55
1.50m L
14:09
4.89m H
20:23
1.65m L
Fri 13th02:37
4.77m H
08:48
1.73m L
15:03
4.64m H
21:24
1.90m L
Sat 14th03:41
4.57m H
10:00
1.91m L
16:20
4.44m H
22:44
2.04m L
Sun 15th05:05
4.50m H
11:24
1.89m L
17:55
4.47m H
Mon 16th00:09
1.91m L
06:30
4.68m H
12:43
1.62m L
19:15
4.74m H
Tue 17th01:18
1.58m L
07:36
5.03m H
13:48
1.19m L
20:13
5.10m H
Wed 18th02:15
1.16m L
08:30
5.42m H
14:41
0.74m L
21:02
5.45m H
Thu 19th03:03
0.74m L
09:16
5.79m H
15:28
0.36m L
21:45
5.73m H
Fri 20th03:48
0.40m L
10:00
6.08m H
16:12
0.10m L
22:28
5.92m H
Sat 21st04:31
0.18m L
10:45
6.25m H
16:56
0.01m L
23:11
5.99m H
Sun 22nd05:15
0.12m L
11:30
6.25m H
17:40
0.09m L
23:54
5.92m H
Mon 23rd06:00
0.21m L
12:15
6.09m H
18:24
0.34m L
Tue 24th00:39
5.74m H
06:46
0.46m L
13:02
5.79m H
19:10
0.71m L
Wed 25th01:24
5.46m H
07:35
0.82m L
13:51
5.39m H
19:58
1.16m 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.