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 13th
Dec 2017
00:47
4.66m H
07:16
1.82m L
13:15
4.82m H
19:51
1.65m L
Thu 14th01:48
4.83m H
08:15
1.68m L
14:12
4.95m H
20:43
1.52m L
Fri 15th02:38
5.02m H
09:04
1.53m L
14:59
5.08m H
21:27
1.41m L
Sat 16th03:21
5.20m H
09:46
1.41m L
15:40
5.19m H
22:05
1.31m L
Sun 17th04:00
5.34m H
10:24
1.30m L
16:18
5.27m H
22:40
1.25m L
Mon 18th04:36
5.43m H
10:59
1.24m L
16:53
5.31m H
23:14
1.23m L
Tue 19th05:10
5.48m H
11:33
1.21m L
17:26
5.30m H
23:47
1.24m L
Wed 20th05:43
5.47m H
12:06
1.22m L
17:59
5.25m H
Thu 21st00:20
1.30m L
06:16
5.42m H
12:40
1.28m L
18:31
5.16m H
Fri 22nd00:52
1.39m L
06:49
5.32m H
13:14
1.38m L
19:05
5.04m H
Sat 23rd01:27
1.51m L
07:25
5.18m H
13:51
1.50m L
19:41
4.88m H
Sun 24th02:04
1.66m L
08:03
5.02m H
14:31
1.65m L
20:23
4.72m H
Mon 25th02:48
1.82m L
08:48
4.85m H
15:18
1.79m L
21:12
4.57m H
Tue 26th03:40
1.96m L
09:43
4.71m H
16:16
1.88m L
22:14
4.48m H
Wed 27th04:46
2.02m L
10:48
4.65m H
17:24
1.87m L
23:26
4.51m H
Thu 28th06:00
1.95m L
12:00
4.72m H
18:36
1.74m L
Fri 29th00:38
4.70m H
07:10
1.74m L
13:09
4.93m H
19:41
1.49m L
Sat 30th01:42
5.00m H
08:13
1.44m L
14:10
5.21m H
20:39
1.20m L
Sun 31st02:40
5.34m H
09:10
1.10m L
15:06
5.50m H
21:34
0.93m L
Mon 1st
Jan 2018
03:33
5.66m H
10:04
0.80m L
16:00
5.73m H
22:26
0.71m L
Tue 2nd04:25
5.91m H
10:56
0.57m L
16:51
5.88m H
23:16
0.58m L
Wed 3rd05:15
6.06m H
11:46
0.45m L
17:41
5.91m H
Thu 4th00:05
0.55m L
06:03
6.09m H
12:36
0.46m L
18:29
5.83m H
Fri 5th00:53
0.64m L
06:50
5.99m H
13:24
0.60m L
19:16
5.64m H
Sat 6th01:41
0.83m L
07:37
5.78m H
14:12
0.84m L
20:03
5.38m H
Sun 7th02:28
1.09m L
08:24
5.48m H
15:00
1.15m L
20:51
5.07m H
Mon 8th03:18
1.40m L
09:15
5.15m H
15:52
1.47m L
21:45
4.78m H
Tue 9th04:12
1.69m L
10:10
4.84m H
16:51
1.74m L
22:45
4.56m 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.