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 9th
Dec 2022
04:33
1.34m L
10:50
5.50m H
17:00
1.32m L
23:09
5.29m H
Sat 10th05:07
1.44m L
11:24
5.46m H
17:37
1.40m L
23:45
5.18m H
Sun 11th05:42
1.56m L
11:57
5.39m H
18:14
1.51m L
Mon 12th00:21
5.05m H
06:17
1.70m L
12:33
5.29m H
18:53
1.63m L
Tue 13th01:00
4.89m H
06:54
1.87m L
13:11
5.15m H
19:36
1.76m L
Wed 14th01:42
4.72m H
07:37
2.05m L
13:54
4.99m H
20:23
1.89m L
Thu 15th02:32
4.56m H
08:26
2.22m L
14:44
4.84m H
21:16
1.99m L
Fri 16th03:30
4.45m H
09:24
2.33m L
15:43
4.73m H
22:15
2.02m L
Sat 17th04:36
4.43m H
10:30
2.35m L
16:49
4.70m H
23:18
1.95m L
Sun 18th05:42
4.53m H
11:36
2.24m L
17:54
4.79m H
Mon 19th00:18
1.78m L
06:42
4.72m H
12:37
2.02m L
18:53
4.95m H
Tue 20th01:12
1.57m L
07:33
4.97m H
13:31
1.74m L
19:47
5.16m H
Wed 21st02:01
1.35m L
08:21
5.23m H
14:21
1.45m L
20:37
5.37m H
Thu 22nd02:48
1.15m L
09:06
5.49m H
15:09
1.17m L
21:26
5.56m H
Fri 23rd03:34
0.99m L
09:51
5.71m H
15:57
0.93m L
22:15
5.68m H
Sat 24th04:21
0.91m L
10:36
5.87m H
16:48
0.76m L
23:05
5.72m H
Sun 25th05:09
0.90m L
11:24
5.95m H
17:39
0.69m L
23:56
5.66m H
Mon 26th05:58
0.98m L
12:13
5.93m H
18:31
0.72m L
Tue 27th00:48
5.50m H
06:50
1.14m L
13:04
5.83m H
19:26
0.85m L
Wed 28th01:44
5.28m H
07:43
1.35m L
13:57
5.65m H
20:22
1.05m L
Thu 29th02:42
5.04m H
08:40
1.58m L
14:55
5.43m H
21:22
1.28m L
Fri 30th03:45
4.81m H
09:42
1.79m L
15:57
5.20m H
22:26
1.50m L
Sat 31st04:52
4.67m H
10:50
1.93m L
17:06
5.02m H
23:32
1.65m L
Sun 1st
Jan 2023
06:01
4.64m H
11:58
1.97m L
18:15
4.92m H
Mon 2nd00:36
1.73m L
07:05
4.72m H
13:04
1.92m L
19:19
4.91m H
Tue 3rd01:34
1.73m L
08:00
4.87m H
14:02
1.79m L
20:15
4.96m H
Wed 4th02:25
1.68m L
08:46
5.04m H
14:53
1.65m L
21:03
5.03m H
Thu 5th03:08
1.60m L
09:27
5.20m H
15:36
1.51m L
21:45
5.10m H

Disclaimer

While every effort has been made to ensure the accuracy of the information provided, no responsibility can be accepted by the National Oceanography Centre for any consequential loss or damage arising from its use.