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
Wed 18th
Oct 2017
03:30
5.45m H
09:54
1.01m L
15:49
5.66m H
22:17
0.85m L
Thu 19th04:09
5.62m H
10:32
0.89m L
16:27
5.74m H
22:53
0.81m L
Fri 20th04:45
5.69m H
11:08
0.86m L
17:02
5.74m H
23:27
0.85m L
Sat 21st05:19
5.69m H
11:42
0.91m L
17:35
5.66m H
Sun 22nd00:00
0.96m L
05:51
5.62m H
12:14
1.03m L
18:07
5.52m H
Mon 23rd00:31
1.13m L
06:23
5.48m H
12:46
1.20m L
18:38
5.32m H
Tue 24th01:01
1.35m L
06:54
5.29m H
13:18
1.43m L
19:09
5.08m H
Wed 25th01:33
1.60m L
07:27
5.06m H
13:51
1.68m L
19:43
4.81m H
Thu 26th02:06
1.87m L
08:05
4.79m H
14:31
1.95m L
20:23
4.52m H
Fri 27th02:48
2.14m L
08:52
4.52m H
15:24
2.20m L
21:18
4.24m H
Sat 28th03:50
2.37m L
10:00
4.31m H
16:39
2.34m L
22:42
4.09m H
Sun 29th05:19
2.44m L
11:30
4.29m H
18:06
2.26m L
Mon 30th00:16
4.20m H
06:43
2.26m L
12:47
4.50m H
19:17
1.99m L
Tue 31st01:21
4.51m H
07:45
1.93m L
13:43
4.84m H
20:11
1.62m L
Wed 1st
Nov 2017
02:11
4.89m H
08:35
1.55m L
14:30
5.22m H
20:57
1.25m L
Thu 2nd02:54
5.27m H
09:18
1.19m L
15:12
5.57m H
21:39
0.93m L
Fri 3rd03:35
5.61m H
10:00
0.89m L
15:54
5.85m H
22:20
0.68m L
Sat 4th04:15
5.87m H
10:42
0.67m L
16:36
6.04m H
23:02
0.54m L
Sun 5th04:57
6.03m H
11:25
0.55m L
17:19
6.09m H
23:45
0.53m L
Mon 6th05:40
6.05m H
12:09
0.57m L
18:03
6.00m H
Tue 7th00:29
0.65m L
06:24
5.94m H
12:55
0.71m L
18:49
5.77m H
Wed 8th01:15
0.90m L
07:10
5.72m H
13:44
0.97m L
19:38
5.45m H
Thu 9th02:03
1.22m L
08:01
5.41m H
14:38
1.29m L
20:33
5.08m H
Fri 10th03:00
1.57m L
09:00
5.09m H
15:41
1.60m L
21:38
4.75m H
Sat 11th04:08
1.85m L
10:10
4.84m H
16:57
1.78m L
22:56
4.58m H
Sun 12th05:28
1.96m L
11:31
4.76m H
18:18
1.77m L
Mon 13th00:18
4.62m H
06:48
1.86m L
12:49
4.87m H
19:30
1.60m L
Tue 14th01:27
4.83m H
07:54
1.64m L
13:52
5.08m H
20:26
1.39m 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.