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
18-08-2026 19:506.99-0.03
 Next HWNext LW
22:50, 11.99 05:17, 2.33
Date Highest 2026 Date Lowest 2026
04-02 14.02m 21-03 0.33m

Second Severn Crossing Predicted Tide Table (Chart Datum)

18-08-202619-08-202620-08-2026
 Time (GMT)Height Time (GMT)Height Time (GMT)Height
High10:36
22:50
12.16m
11.99m
High11:09
23:24
11.47m
11.22m
High11:46
10.72m
Low04:55
17:03
1.86m
2.11m
Low05:17
17:27
2.33m
2.59m
Low05:41
17:57
2.82m
3.16m
21-08-202622-08-202623-08-2026
 Time (GMT)Height Time (GMT)Height Time (GMT)Height
High00:05
12:33
10.38m
9.95m
High01:01
13:45
9.55m
9.33m
High02:29
15:25
9.04m
9.28m
Low06:12
18:37
3.44m
3.87m
Low06:57
19:39
4.16m
4.55m
Low08:14
22:01
4.77m
4.63m