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 28th
Aug 2015
02:41
1.08m L
09:00
5.31m H
15:01
1.02m L
21:15
5.69m H
Sat 29th03:26
0.67m L
09:43
5.60m H
15:45
0.69m L
21:57
6.00m H
Sun 30th04:09
0.35m L
10:25
5.82m H
16:27
0.45m L
22:40
6.21m H
Mon 31st04:53
0.17m L
11:08
5.94m H
17:10
0.34m L
23:24
6.29m H
Tue 1st
Sep 2015
05:37
0.14m L
11:52
5.92m H
17:55
0.37m L
Wed 2nd00:10
6.22m H
06:23
0.28m L
12:37
5.79m H
18:42
0.55m L
Thu 3rd00:57
6.01m H
07:10
0.58m L
13:25
5.56m H
19:32
0.85m L
Fri 4th01:47
5.67m H
08:00
0.97m L
14:16
5.26m H
20:28
1.22m L
Sat 5th02:43
5.27m H
08:58
1.41m L
15:17
4.95m H
21:34
1.59m L
Sun 6th03:51
4.88m H
10:07
1.80m L
16:33
4.73m H
22:53
1.83m L
Mon 7th05:16
4.63m H
11:27
2.01m L
18:00
4.70m H
Tue 8th00:16
1.85m L
06:43
4.63m H
12:47
1.98m L
19:15
4.86m H
Wed 9th01:30
1.67m L
07:51
4.79m H
13:51
1.80m L
20:12
5.07m H
Thu 10th02:25
1.44m L
08:41
4.97m H
14:39
1.58m L
20:55
5.27m H
Fri 11th03:08
1.23m L
09:19
5.14m H
15:18
1.38m L
21:31
5.43m H
Sat 12th03:43
1.07m L
09:52
5.28m H
15:51
1.22m L
22:03
5.54m H
Sun 13th04:15
0.97m L
10:22
5.38m H
16:21
1.11m L
22:33
5.61m H
Mon 14th04:45
0.93m L
10:51
5.44m H
16:50
1.06m L
23:03
5.62m H
Tue 15th05:14
0.94m L
11:21
5.45m H
17:19
1.07m L
23:33
5.57m H
Wed 16th05:43
1.02m L
11:51
5.42m H
17:51
1.14m L
Thu 17th00:05
5.48m H
06:14
1.15m L
12:24
5.34m H
18:24
1.28m L
Fri 18th00:37
5.33m H
06:46
1.33m L
12:58
5.22m H
18:59
1.46m L
Sat 19th01:12
5.14m H
07:21
1.54m L
13:36
5.05m H
19:39
1.68m L
Sun 20th01:52
4.92m H
08:04
1.79m L
14:21
4.86m H
20:30
1.91m L
Mon 21st02:43
4.67m H
09:00
2.04m L
15:20
4.67m H
21:37
2.10m L
Tue 22nd03:55
4.47m H
10:16
2.20m L
16:39
4.59m H
22:59
2.10m L
Wed 23rd05:27
4.47m H
11:40
2.13m L
18:03
4.73m H
Thu 24th00:18
1.86m L
06:49
4.71m H
12:52
1.84m L
19:11
5.05m 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.