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

 

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Latest Tide Data (Predicted Tide Table)

Time (GMT)ElevationResidual
08-10-2026 06:1011.630.31
 Next HWNext LW
17:41, 12.74 11:55, 2
Date Highest 2026 Date Lowest 2026
29-09 14.09m 21-03 0.33m
Time (GMT)ElevationResidual
06-11-2025 00:003.580.3
05-11-2025 23:503.910.27
05-11-2025 23:404.220.22
05-11-2025 23:304.570.21
05-11-2025 23:204.890.19
05-11-2025 23:105.230.18
05-11-2025 23:005.560.18
05-11-2025 22:505.90.18
05-11-2025 22:406.230.17
05-11-2025 22:306.560.16
05-11-2025 22:206.890.14
05-11-2025 22:107.250.13
05-11-2025 22:007.60.11
05-11-2025 21:507.960.07
05-11-2025 21:408.340.03
05-11-2025 21:308.7-0.05
05-11-2025 21:209.08-0.14
05-11-2025 21:109.46-0.22
05-11-2025 21:009.89-0.28
05-11-2025 20:5010.32-0.35
05-11-2025 20:4010.78-0.38
05-11-2025 20:3011.27-0.38
05-11-2025 20:2011.74-0.37
05-11-2025 20:1012.22-0.33
05-11-2025 20:0012.68-0.27
05-11-2025 19:5013.08-0.22
05-11-2025 19:4013.46-0.15
05-11-2025 19:3013.74-0.1
05-11-2025 19:2013.96-0.05
05-11-2025 19:1014.150.04
05-11-2025 19:0014.240.11
05-11-2025 18:5014.240.16
05-11-2025 18:4014.150.2
05-11-2025 18:3013.970.22
05-11-2025 18:2013.720.24
05-11-2025 18:1013.450.3
05-11-2025 18:0013.150.38
05-11-2025 17:5012.780.44
05-11-2025 17:4012.340.47
05-11-2025 17:3011.880.51
05-11-2025 17:2011.390.54
05-11-2025 17:1010.860.56
05-11-2025 17:0010.310.56
05-11-2025 16:509.730.54
05-11-2025 16:409.130.5
05-11-2025 16:308.530.47
05-11-2025 16:207.950.46
05-11-2025 16:107.390.46
05-11-2025 16:006.850.48
05-11-2025 15:506.290.47
05-11-2025 15:405.780.51
05-11-2025 15:305.330.6
05-11-2025 15:204.870.66
05-11-2025 15:104.40.69
05-11-2025 15:003.910.67
05-11-2025 14:503.370.59
05-11-2025 14:402.870.49
05-11-2025 14:302.430.42
05-11-2025 14:202.090.41
05-11-2025 14:101.580.18
05-11-2025 14:001.17-0.02
05-11-2025 13:501.02-0.01
05-11-2025 13:401.060.13
05-11-2025 13:301.150.26
05-11-2025 13:201.290.38
05-11-2025 13:101.440.46
05-11-2025 13:001.620.51
05-11-2025 12:501.810.53
05-11-2025 12:402.010.52
05-11-2025 12:302.20.46
05-11-2025 12:202.450.43
05-11-2025 12:102.690.38
05-11-2025 12:002.930.3
05-11-2025 11:503.220.27
05-11-2025 11:403.520.24
05-11-2025 11:303.840.24
05-11-2025 11:204.150.23
05-11-2025 11:104.460.21
05-11-2025 11:004.780.21
05-11-2025 10:505.090.21
05-11-2025 10:405.40.21
05-11-2025 10:305.740.23
05-11-2025 10:206.060.23
05-11-2025 10:106.380.22
05-11-2025 10:006.70.19
05-11-2025 09:507.050.19
05-11-2025 09:407.390.16
05-11-2025 09:307.750.13
05-11-2025 09:208.10.07
05-11-2025 09:108.45-0.01
05-11-2025 09:008.81-0.1
05-11-2025 08:509.2-0.17
05-11-2025 08:409.6-0.24
05-11-2025 08:3010.02-0.3
05-11-2025 08:2010.45-0.35
05-11-2025 08:1010.92-0.35
05-11-2025 08:0011.38-0.35
05-11-2025 07:5011.82-0.34
05-11-2025 07:4012.28-0.28
05-11-2025 07:3012.67-0.24
05-11-2025 07:2013.05-0.17
05-11-2025 07:1013.33-0.13
05-11-2025 07:0013.54-0.11
05-11-2025 06:5013.74-0.02
05-11-2025 06:4013.870.07
05-11-2025 06:3013.880.11
05-11-2025 06:2013.830.17
05-11-2025 06:1013.680.19
05-11-2025 06:0013.480.23
05-11-2025 05:5013.240.29
05-11-2025 05:4012.960.36
05-11-2025 05:3012.620.43
05-11-2025 05:2012.220.48
05-11-2025 05:1011.810.54
05-11-2025 05:0011.390.62
05-11-2025 04:5010.920.68
05-11-2025 04:4010.40.69
05-11-2025 04:309.820.66
05-11-2025 04:209.240.63
05-11-2025 04:108.640.58
05-11-2025 04:008.040.54
05-11-2025 03:507.460.5
05-11-2025 03:406.880.48
05-11-2025 03:306.310.44
05-11-2025 03:205.780.44
05-11-2025 03:105.30.49
05-11-2025 03:004.820.52
05-11-2025 02:504.330.52
05-11-2025 02:403.80.46
05-11-2025 02:303.280.37
05-11-2025 02:202.760.27
05-11-2025 02:102.350.22
05-11-2025 02:001.970.18
05-11-2025 01:501.47-0.04
05-11-2025 01:401.12-0.16
05-11-2025 01:301.05-0.06
05-11-2025 01:201.10.12
05-11-2025 01:101.20.27
05-11-2025 01:001.30.38
05-11-2025 00:501.460.49
05-11-2025 00:401.660.6
05-11-2025 00:301.840.64
05-11-2025 00:202.050.66
05-11-2025 00:102.250.64