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
10-05-2026 14:108.22-0.55
 Next HWNext LW
01:16, 9.81 18:36, 3.87
Date Highest 2026 Date Lowest 2026
04-02 14.02m 21-03 0.33m

Second Severn Crossing Predicted Tide Table (Chart Datum)

10-05-202611-05-202612-05-2026
 Time (GMT)Height Time (GMT)Height Time (GMT)Height
High00:02
12:41
9.93m
9.74m
High01:16
13:57
9.81m
9.84m
High02:35
15:12
10.14m
10.38m
Low06:16
18:36
3.55m
3.87m
Low07:22
19:52
3.73m
3.99m
Low08:48
21:33
3.59m
3.67m
13-05-202614-05-202615-05-2026
 Time (GMT)Height Time (GMT)Height Time (GMT)Height
High03:48
16:20
10.89m
11.27m
High04:50
17:18
11.84m
12.27m
High05:45
18:10
12.75m
13.12m
Low10:20
23:00
3.03m
2.90m
Low11:32
2.24m
Low00:04
12:31
2.03m
1.48m