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
18-11-2025 16:4010.670.08
 Next HWNext LW
18:09, 12.46 00:44, 1.76
Date Highest 2025 Date Lowest 2025
27-04 15.33m 31-03 0.03m

Second Severn Crossing Predicted Tide Table (Chart Datum)

18-11-202519-11-202520-11-2025
 Time (GMT)Height Time (GMT)Height Time (GMT)Height
High05:52
18:09
12.20m
12.46m
High06:31
18:47
12.60m
12.65m
High07:07
19:22
12.75m
12.63m
Low00:02
12:22
2.08m
1.85m
Low00:44
13:02
1.76m
1.59m
Low01:22
13:39
1.61m
1.53m
21-11-202522-11-202523-11-2025
 Time (GMT)Height Time (GMT)Height Time (GMT)Height
High07:39
19:55
12.68m
12.44m
High08:10
20:26
12.44m
12.12m
High08:41
20:58
12.09m
11.72m
Low01:57
14:13
1.63m
1.64m
Low02:29
14:45
1.79m
1.89m
Low02:59
15:16
2.06m
2.22m