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
Fri 18th
Aug 2017
00:36
1.60m L
06:57
4.94m H
13:07
1.51m L
19:34
5.08m H
Sat 19th01:46
1.30m L
08:06
5.16m H
14:11
1.28m L
20:32
5.38m H
Sun 20th02:45
0.96m L
09:01
5.39m H
15:04
1.02m L
21:21
5.66m H
Mon 21st03:36
0.66m L
09:49
5.58m H
15:51
0.81m L
22:06
5.87m H
Tue 22nd04:21
0.46m L
10:33
5.69m H
16:33
0.68m L
22:48
5.98m H
Wed 23rd05:04
0.40m L
11:15
5.70m H
17:14
0.66m L
23:30
5.97m H
Thu 24th05:45
0.46m L
11:56
5.62m H
17:54
0.75m L
Fri 25th00:11
5.84m H
06:25
0.65m L
12:35
5.46m H
18:33
0.95m L
Sat 26th00:50
5.62m H
07:04
0.92m L
13:14
5.25m H
19:13
1.21m L
Sun 27th01:29
5.34m H
07:44
1.25m L
13:53
5.02m H
19:54
1.53m L
Mon 28th02:09
5.03m H
08:27
1.60m L
14:35
4.78m H
20:42
1.87m L
Tue 29th02:55
4.71m H
09:16
1.94m L
15:27
4.55m H
21:39
2.17m L
Wed 30th03:54
4.43m H
10:20
2.22m L
16:35
4.40m H
22:54
2.35m L
Thu 31st05:15
4.27m H
11:38
2.33m L
17:57
4.41m H
Fri 1st
Sep 2017
00:18
2.30m L
06:45
4.33m H
12:53
2.23m L
19:12
4.60m H
Sat 2nd01:27
2.07m L
07:51
4.54m H
13:51
2.00m L
20:06
4.87m H
Sun 3rd02:19
1.75m L
08:38
4.80m H
14:36
1.72m L
20:48
5.14m H
Mon 4th02:59
1.44m L
09:15
5.03m H
15:12
1.43m L
21:23
5.39m H
Tue 5th03:34
1.15m L
09:48
5.24m H
15:46
1.17m L
21:57
5.60m H
Wed 6th04:08
0.91m L
10:20
5.41m H
16:19
0.96m L
22:30
5.77m H
Thu 7th04:41
0.73m L
10:53
5.55m H
16:54
0.81m L
23:06
5.87m H
Fri 8th05:15
0.63m L
11:28
5.62m H
17:30
0.76m L
23:43
5.90m H
Sat 9th05:52
0.62m L
12:06
5.61m H
18:08
0.80m L
Sun 10th00:22
5.84m H
06:31
0.72m L
12:45
5.52m H
18:49
0.94m L
Mon 11th01:04
5.68m H
07:14
0.91m L
13:29
5.36m H
19:36
1.16m L
Tue 12th01:51
5.44m H
08:03
1.20m L
14:19
5.13m H
20:32
1.44m L
Wed 13th02:48
5.14m H
09:03
1.54m L
15:22
4.89m H
21:42
1.69m L
Thu 14th04:00
4.86m H
10:18
1.81m L
16:43
4.76m H
23:06
1.79m 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.