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
Mon 22nd
Apr 2019
00:33
0.53m L
06:27
5.72m H
12:54
0.72m L
18:45
5.64m H
Tue 23rd01:12
0.80m L
07:04
5.42m H
13:31
1.05m L
19:23
5.36m H
Wed 24th01:51
1.14m L
07:43
5.06m H
14:09
1.42m L
20:03
5.03m H
Thu 25th02:32
1.51m L
08:24
4.69m H
14:50
1.79m L
20:49
4.69m H
Fri 26th03:19
1.86m L
09:15
4.33m H
15:42
2.11m L
21:48
4.39m H
Sat 27th04:22
2.12m L
10:26
4.07m H
16:57
2.31m L
23:07
4.22m H
Sun 28th05:45
2.21m L
11:57
4.03m H
18:26
2.29m L
Mon 29th00:31
4.28m H
07:05
2.08m L
13:13
4.21m H
19:36
2.07m L
Tue 30th01:36
4.50m H
08:05
1.82m L
14:08
4.49m H
20:29
1.78m L
Wed 1st
May 2019
02:25
4.77m H
08:51
1.54m L
14:51
4.77m H
21:12
1.50m L
Thu 2nd03:06
5.02m H
09:30
1.29m L
15:27
5.03m H
21:48
1.26m L
Fri 3rd03:42
5.24m H
10:05
1.08m L
16:00
5.25m H
22:23
1.07m L
Sat 4th04:15
5.41m H
10:39
0.93m L
16:33
5.42m H
22:57
0.92m L
Sun 5th04:49
5.52m H
11:12
0.84m L
17:06
5.53m H
23:31
0.84m L
Mon 6th05:24
5.57m H
11:47
0.81m L
17:40
5.58m H
Tue 7th00:08
0.83m L
06:00
5.54m H
12:23
0.87m L
18:17
5.54m H
Wed 8th00:45
0.91m L
06:38
5.42m H
13:01
1.01m L
18:56
5.42m H
Thu 9th01:27
1.06m L
07:19
5.22m H
13:43
1.21m L
19:39
5.22m H
Fri 10th02:12
1.27m L
08:07
4.96m H
14:32
1.46m L
20:31
4.98m H
Sat 11th03:09
1.49m L
09:07
4.69m H
15:33
1.70m L
21:37
4.77m H
Sun 12th04:19
1.65m L
10:21
4.51m H
16:50
1.82m L
22:57
4.68m H
Mon 13th05:40
1.65m L
11:45
4.53m H
18:12
1.74m L
Tue 14th00:18
4.78m H
06:57
1.46m L
13:00
4.74m H
19:25
1.49m L
Wed 15th01:28
5.03m H
08:03
1.18m L
14:03
5.04m H
20:26
1.19m L
Thu 16th02:26
5.31m H
08:57
0.92m L
14:55
5.33m H
21:18
0.93m L
Fri 17th03:17
5.53m H
09:45
0.74m L
15:41
5.55m H
22:05
0.75m L
Sat 18th04:02
5.66m H
10:30
0.65m L
16:24
5.69m H
22:49
0.66m L
Sun 19th04:45
5.69m H
11:11
0.66m L
17:05
5.72m H
23:30
0.68m 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.