Highest & lowest predicted tides at St. Mary's
St. Mary's, years 2008 to 2026
Highest astronomical tide
6.31m
Mean high water springs
5.68m
Mean high water neaps
4.35m
Mean low water neaps
2.04m
Mean low water springs
0.73m
Lowest astronomical tide
0.09m
Highest equinoctial spring tides
6.01m
7 Apr 2008
5.96m
16 Oct 2008
6.08m
11 Feb 2009
6.11m
21 Aug 2009
6.23m
2 Mar 2010
6.24m
9 Sep 2010
6.22m
20 Feb 2011
6.22m
28 Sep 2011
6.10m
10 Mar 2012
6.09m
15 Nov 2012
6.07m
13 Jan 2013
6.09m
22 Aug 2013
6.22m
2 Feb 2014
6.25m
10 Sep 2014
6.28m
21 Feb 2015
6.31m
29 Sep 2015
6.22m
11 Mar 2016
6.25m
17 Oct 2016
6.06m
30 Mar 2017
6.08m
5 Nov 2017
6.09m
2 Feb 2018
6.12m
10 Sep 2018
6.21m
21 Feb 2019
6.25m
29 Sep 2019
6.23m
11 Mar 2020
6.24m
17 Oct 2020
6.13m
30 Mar 2021
6.08m
7 Oct 2021
5.96m
3 Feb 2022
6.05m
11 Sep 2022
6.18m
22 Feb 2023
6.22m
30 Sep 2023
6.27m
12 Mar 2024
6.27m
19 Sep 2024
6.17m
31 Mar 2025
6.14m
8 Oct 2025
5.95m
21 Mar 2026
5.94m
14 Aug 2026
Lowest equinoctial spring tides
0.37m
7 Apr 2008
0.51m
2 Aug 2008
0.29m
11 Feb 2009
0.27m
21 Aug 2009
0.12m
2 Mar 2010
0.20m
9 Sep 2010
0.14m
21 Mar 2011
0.29m
28 Sep 2011
0.28m
10 Mar 2012
0.48m
17 Oct 2012
0.36m
11 Feb 2013
0.31m
25 Jul 2013
0.16m
2 Mar 2014
0.19m
13 Aug 2014
0.09m
21 Mar 2015
0.20m
1 Sep 2015
0.14m
8 Apr 2016
0.32m
17 Oct 2016
0.31m
27 Apr 2017
0.43m
24 Jul 2017
0.27m
3 Mar 2018
0.29m
12 Aug 2018
0.13m
22 Mar 2019
0.22m
29 Sep 2019
0.11m
11 Mar 2020
0.27m
18 Sep 2020
0.23m
30 Mar 2021
0.46m
7 Oct 2021
0.45m
4 Mar 2022
0.41m
14 Aug 2022
0.22m
22 Feb 2023
0.23m
2 Sep 2023
0.12m
11 Mar 2024
0.24m
19 Sep 2024
0.21m
30 Mar 2025
0.43m
10 Sep 2025
0.44m
20 Mar 2026
0.46m
13 Aug 2026
10 highest tides
6.31 m
29 Sep 2015
6.28 m
21 Feb 2015
6.27 m
19 Sep 2024
6.27 m
12 Mar 2024
6.25 m
20 Feb 2015
6.25 m
29 Sep 2019
6.25 m
22 Mar 2015
6.25 m
10 Sep 2014
6.25 m
17 Oct 2016
6.25 m
28 Sep 2015
10 lowest tides
0.09 m
21 Mar 2015
0.11 m
20 Feb 2015
0.11 m
11 Mar 2020
0.12 m
11 Mar 2024
0.12 m
21 Feb 2015
0.12 m
12 Mar 2024
0.12 m
2 Mar 2010
0.13 m
22 Mar 2015
0.13 m
22 Mar 2019
0.13 m
9 Apr 2020