National Network of Regional Coastal Monitoring Programmes

« Dychwelid at fap am donau, llanw a gorsafoedd tywydd eraill.

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

 


Data llanw diweddaraf (Predicted Tide Table)

Amser (ASG)CodiadGweddill
19-07-2025 01:4010.84-0.18
 Penllanw nesafDistyll nesaf
13:23, 11.22 07:13, 2.40
Dyddiad Uchaf 2025 Dyddiad Isaf 2025
27-04 15.33m 31-03 0.03m

Second Severn Crossing Predicted Tide Table (Chart Datum)

19-07-202520-07-202521-07-2025
 Time (GMT)Height Time (GMT)Height Time (GMT)Height
High00:52
13:23
11.48m
11.22m
High02:00
14:34
11.14m
10.99m
High03:16
15:52
10.95m
11.03m
Low07:13
19:37
2.40m
2.82m
Low08:14
20:55
2.83m
3.16m
Low09:41
22:30
3.12m
3.16m
22-07-202523-07-202524-07-2025
 Time (GMT)Height Time (GMT)Height Time (GMT)Height
High04:33
17:05
11.06m
11.38m
High05:44
18:11
11.45m
11.93m
High06:46
19:07
11.98m
12.48m
Low11:08
23:51
3.00m
2.79m
Low12:22
2.60m
Low01:01
13:25
2.28m
2.14m