High and low water times and heights at St. Mary's

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 5th
Feb 2023
04:42
5.22m H
11:09
1.25m L
17:00
5.09m H
23:18
1.25m L
Mon 6th05:15
5.34m H
11:42
1.13m L
17:32
5.19m H
23:49
1.14m L
Tue 7th05:46
5.42m H
12:12
1.06m L
18:03
5.23m H
Wed 8th00:19
1.08m L
06:17
5.44m H
12:42
1.04m L
18:33
5.23m H
Thu 9th00:50
1.07m L
06:47
5.41m H
13:12
1.07m L
19:03
5.18m H
Fri 10th01:21
1.13m L
07:18
5.33m H
13:43
1.17m L
19:34
5.09m H
Sat 11th01:54
1.25m L
07:49
5.20m H
14:15
1.32m L
20:08
4.95m H
Sun 12th02:28
1.43m L
08:25
5.01m H
14:52
1.53m L
20:47
4.77m H
Mon 13th03:09
1.65m L
09:08
4.79m H
15:37
1.76m L
21:36
4.57m H
Tue 14th04:03
1.88m L
10:05
4.54m H
16:40
1.97m L
22:45
4.39m H
Wed 15th05:20
2.04m L
11:24
4.35m H
18:08
2.06m L
Thu 16th00:15
4.39m H
06:53
1.97m L
12:59
4.41m H
19:36
1.89m L
Fri 17th01:42
4.64m H
08:16
1.65m L
14:21
4.70m H
20:50
1.54m L
Sat 18th02:51
5.06m H
09:23
1.21m L
15:24
5.09m H
21:49
1.13m L
Sun 19th03:48
5.50m H
10:18
0.78m L
16:17
5.46m H
22:41
0.76m L
Mon 20th04:38
5.87m H
11:07
0.45m L
17:04
5.73m H
23:27
0.49m L
Tue 21st05:24
6.11m H
11:52
0.26m L
17:48
5.86m H
Wed 22nd00:11
0.36m L
06:06
6.18m H
12:35
0.25m L
18:29
5.84m H
Thu 23rd00:53
0.39m L
06:48
6.08m H
13:15
0.40m L
19:08
5.69m H
Fri 24th01:33
0.57m L
07:27
5.83m H
13:54
0.70m L
19:45
5.43m H
Sat 25th02:12
0.89m L
08:06
5.46m H
14:33
1.09m L
20:24
5.10m H
Sun 26th02:51
1.28m L
08:46
5.04m H
15:11
1.52m L
21:06
4.74m H
Mon 27th03:35
1.71m L
09:32
4.60m H
15:57
1.93m L
21:57
4.38m H
Tue 28th04:32
2.10m L
10:33
4.20m H
17:01
2.27m L
23:14
4.12m H
Wed 1st
Mar 2023
05:59
2.33m L
12:03
3.99m H
18:38
2.39m L
Thu 2nd00:54
4.11m H
07:38
2.26m L
13:38
4.08m H
20:06
2.22m L
Fri 3rd02:12
4.35m H
08:48
1.98m L
14:42
4.36m H
21:06
1.92m L
Sat 4th03:05
4.67m H
09:36
1.66m L
15:28
4.66m H
21:48
1.62m L

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.