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
08-11-2025 16:201.870.14
 Next HWNext LW
21:14, 13.07 03:55, 1.46
Date Highest 2025 Date Lowest 2025
27-04 15.33m 31-03 0.03m

Second Severn Crossing Predicted Tide Table (Chart Datum)

08-11-202509-11-202510-11-2025
 Time (GMT)Height Time (GMT)Height Time (GMT)Height
High08:48
21:14
13.54m
13.07m
High09:31
21:59
12.82m
12.21m
High10:16
22:47
12.01m
11.33m
Low03:16
15:37
0.83m
1.20m
Low03:55
16:17
1.46m
1.87m
Low04:33
16:58
2.21m
2.62m
11-11-202512-11-202513-11-2025
 Time (GMT)Height Time (GMT)Height Time (GMT)Height
High11:05
23:41
11.24m
10.57m
High12:05
10.63m
High00:47
13:16
10.07m
10.32m
Low05:12
17:44
2.96m
3.31m
Low05:58
18:46
3.61m
3.82m
Low07:06
20:08
4.05m
3.95m