National Network of Regional Coastal Monitoring Programmes

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Note that these are real-time data and are not quality-controlled. Long-range graphs are plotted from a randomised subsample of half-hourly data.

Second Severn Crossing

Tide Levels and Harmonics

 


Latest Tide Data (Predicted Tide Table)

Time (GMT)ElevationResidual
13-11-2025 07:404.40.25
 Next HWNext LW
13:16, 10.32 20:08, 3.94
Date Highest 2025 Date Lowest 2025
27-04 15.33m 31-03 0.03m

Second Severn Crossing Predicted Tide Table (Chart Datum)

13-11-202514-11-202515-11-2025
 Time (GMT)Height Time (GMT)Height Time (GMT)Height
High00:47
13:16
10.07m
10.32m
High02:00
14:32
9.97m
10.42m
High03:11
15:40
10.29m
10.88m
Low07:06
20:08
4.05m
3.95m
Low08:35
21:21
4.01m
3.63m
Low09:47
22:23
3.53m
3.11m
16-11-202517-11-202518-11-2025
 Time (GMT)Height Time (GMT)Height Time (GMT)Height
High04:14
16:38
10.90m
11.48m
High05:07
17:27
11.60m
12.05m
High05:52
18:09
12.20m
12.46m
Low10:45
23:15
2.89m
2.55m
Low11:36
2.30m
Low00:02
12:22
2.08m
1.85m