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
18-06-2026 08:4011.990.3
 Next HWNext LW
09:34, 12.63 16:15, 1.68
Date Highest 2026 Date Lowest 2026
04-02 14.02m 21-03 0.33m
Time (GMT)ElevationResidual
18-06-2026 08:4011.990.3
18-06-2026 08:3011.640.3
18-06-2026 08:2011.230.29
18-06-2026 08:1010.830.32
18-06-2026 08:0010.390.34
18-06-2026 07:509.950.37
18-06-2026 07:409.50.4
18-06-2026 07:309.010.41
18-06-2026 07:208.510.39
18-06-2026 07:1080.37
18-06-2026 07:007.530.38
18-06-2026 06:507.050.37
18-06-2026 06:406.60.39
18-06-2026 06:306.120.36
18-06-2026 06:205.690.38
18-06-2026 06:105.310.43
18-06-2026 06:004.890.43
18-06-2026 05:504.490.44
18-06-2026 05:404.020.37
18-06-2026 05:303.560.29
18-06-2026 05:203.060.14
18-06-2026 05:102.60.01
18-06-2026 05:002.22-0.07
18-06-2026 04:501.91-0.12
18-06-2026 04:401.47-0.33
18-06-2026 04:301.11-0.51
18-06-2026 04:201.01-0.47
18-06-2026 04:101.06-0.35
18-06-2026 04:001.16-0.22
18-06-2026 03:501.28-0.12
18-06-2026 03:401.43-0.03
18-06-2026 03:301.610.02
18-06-2026 03:201.790.03
18-06-2026 03:101.990.02
18-06-2026 03:002.2-0.03
18-06-2026 02:502.41-0.09
18-06-2026 02:402.66-0.16
18-06-2026 02:302.91-0.23
18-06-2026 02:203.2-0.29
18-06-2026 02:103.46-0.38
18-06-2026 02:003.75-0.44
18-06-2026 01:504.06-0.48
18-06-2026 01:404.37-0.52
18-06-2026 01:304.67-0.55
18-06-2026 01:204.96-0.59
18-06-2026 01:105.28-0.58
18-06-2026 01:005.59-0.58
18-06-2026 00:505.89-0.57
18-06-2026 00:406.21-0.54
18-06-2026 00:306.53-0.5
18-06-2026 00:206.86-0.46
18-06-2026 00:107.19-0.41
18-06-2026 00:007.53-0.37
17-06-2026 23:507.87-0.33
17-06-2026 23:408.21-0.3
17-06-2026 23:308.57-0.28
17-06-2026 23:208.94-0.25
17-06-2026 23:109.33-0.23
17-06-2026 23:009.74-0.18
17-06-2026 22:5010.17-0.13
17-06-2026 22:4010.6-0.09
17-06-2026 22:3011.03-0.03
17-06-2026 22:2011.450.02
17-06-2026 22:1011.870.09
17-06-2026 22:0012.260.16
17-06-2026 21:5012.610.22
17-06-2026 21:4012.860.22
17-06-2026 21:3013.10.27
17-06-2026 21:2013.280.33
17-06-2026 21:1013.380.36
17-06-2026 21:0013.380.35
17-06-2026 20:5013.290.33
17-06-2026 20:4013.140.31
17-06-2026 20:3012.930.3
17-06-2026 20:2012.70.33
17-06-2026 20:1012.420.35
17-06-2026 20:0012.090.39
17-06-2026 19:5011.720.41
17-06-2026 19:4011.310.44
17-06-2026 19:3010.890.48
17-06-2026 19:2010.430.49
17-06-2026 19:109.910.46
17-06-2026 19:009.380.43
17-06-2026 18:508.840.39
17-06-2026 18:408.280.33
17-06-2026 18:307.760.3
17-06-2026 18:207.240.27
17-06-2026 18:106.730.25
17-06-2026 18:006.230.22
17-06-2026 17:505.750.22
17-06-2026 17:405.330.25
17-06-2026 17:304.880.25
17-06-2026 17:204.450.26
17-06-2026 17:103.970.19
17-06-2026 17:003.460.09
17-06-2026 16:502.94-0.05
17-06-2026 16:402.47-0.18
17-06-2026 16:302.16-0.18
17-06-2026 16:201.7-0.36
17-06-2026 16:101.2-0.62
17-06-2026 16:001-0.64
17-06-2026 15:501.02-0.49
17-06-2026 15:401.12-0.31
17-06-2026 15:301.24-0.17
17-06-2026 15:201.4-0.04
17-06-2026 15:101.580.05
17-06-2026 15:001.750.09
17-06-2026 14:501.960.11
17-06-2026 14:402.190.11
17-06-2026 14:302.40.06
17-06-2026 14:202.650
17-06-2026 14:102.9-0.07
17-06-2026 14:003.16-0.16
17-06-2026 13:503.46-0.21
17-06-2026 13:403.76-0.28
17-06-2026 13:304.06-0.33
17-06-2026 13:204.36-0.4
17-06-2026 13:104.66-0.44
17-06-2026 13:004.97-0.48
17-06-2026 12:505.29-0.49
17-06-2026 12:405.6-0.51
17-06-2026 12:305.92-0.5
17-06-2026 12:206.23-0.5
17-06-2026 12:106.55-0.48
17-06-2026 12:006.87-0.46
17-06-2026 11:507.21-0.42
17-06-2026 11:407.55-0.38
17-06-2026 11:307.9-0.35
17-06-2026 11:208.23-0.34
17-06-2026 11:108.6-0.3
17-06-2026 11:008.97-0.28
17-06-2026 10:509.36-0.24
17-06-2026 10:409.77-0.21
17-06-2026 10:3010.24-0.11
17-06-2026 10:2010.64-0.09
17-06-2026 10:1011.08-0.02
17-06-2026 10:0011.510.06
17-06-2026 09:5011.940.15
17-06-2026 09:4012.340.24
17-06-2026 09:3012.660.28
17-06-2026 09:2012.940.34
17-06-2026 09:1013.180.4
17-06-2026 09:0013.320.43
17-06-2026 08:5013.370.43
17-06-2026 08:4013.340.42
17-06-2026 08:3013.210.37
17-06-2026 08:2013.030.35
17-06-2026 08:1012.780.32
17-06-2026 08:0012.530.35
17-06-2026 07:5012.20.36
17-06-2026 07:4011.840.38
17-06-2026 07:3011.440.4
17-06-2026 07:2011.020.44
17-06-2026 07:1010.590.49
17-06-2026 07:0010.120.52
17-06-2026 06:509.650.55
17-06-2026 06:409.160.58
17-06-2026 06:308.640.57
17-06-2026 06:208.120.56
17-06-2026 06:107.630.57
17-06-2026 06:007.130.56
17-06-2026 05:506.650.56
17-06-2026 05:406.150.53
17-06-2026 05:305.70.54
17-06-2026 05:205.30.59
17-06-2026 05:104.870.6
17-06-2026 05:004.460.61
17-06-2026 04:503.990.55
17-06-2026 04:403.520.46
17-06-2026 04:303.020.33
17-06-2026 04:202.560.2
17-06-2026 04:102.190.13
17-06-2026 04:001.860.06
17-06-2026 03:501.38-0.19
17-06-2026 03:401.06-0.35
17-06-2026 03:300.98-0.3
17-06-2026 03:201.03-0.18
17-06-2026 03:101.13-0.06
17-06-2026 03:001.270.04
17-06-2026 02:501.420.1
17-06-2026 02:401.60.14
17-06-2026 02:301.780.14
17-06-2026 02:201.970.1
17-06-2026 02:102.20.06
17-06-2026 02:002.43-0.01
17-06-2026 01:502.66-0.09
17-06-2026 01:402.9-0.19
17-06-2026 01:303.19-0.25
17-06-2026 01:203.47-0.32
17-06-2026 01:103.77-0.37
17-06-2026 01:004.06-0.43
17-06-2026 00:504.37-0.47
17-06-2026 00:404.68-0.5
17-06-2026 00:304.97-0.54
17-06-2026 00:205.28-0.54
17-06-2026 00:105.59-0.54
17-06-2026 00:005.91-0.52
16-06-2026 23:506.23-0.5
16-06-2026 23:406.56-0.47
16-06-2026 23:306.88-0.44
16-06-2026 23:207.22-0.41
16-06-2026 23:107.56-0.39
16-06-2026 23:007.89-0.38
16-06-2026 22:508.24-0.38
16-06-2026 22:408.59-0.37
16-06-2026 22:308.96-0.38
16-06-2026 22:209.36-0.37
16-06-2026 22:109.77-0.35
16-06-2026 22:0010.21-0.32
16-06-2026 21:5010.64-0.28
16-06-2026 21:4011.08-0.24
16-06-2026 21:3011.52-0.18
16-06-2026 21:2011.95-0.11
16-06-2026 21:1012.34-0.04
16-06-2026 21:0012.70.03
16-06-2026 20:5012.960.06
16-06-2026 20:4013.210.13
16-06-2026 20:3013.390.19
16-06-2026 20:2013.480.23
16-06-2026 20:1013.480.24
16-06-2026 20:0013.40.25
16-06-2026 19:5013.240.25
16-06-2026 19:4013.030.26
16-06-2026 19:3012.80.31
16-06-2026 19:2012.50.35
16-06-2026 19:1012.170.4
16-06-2026 19:0011.780.44
16-06-2026 18:5011.370.48
16-06-2026 18:4010.940.53
16-06-2026 18:3010.470.56
16-06-2026 18:209.950.55
16-06-2026 18:109.410.52
16-06-2026 18:008.860.49
16-06-2026 17:508.290.44
16-06-2026 17:407.750.4
16-06-2026 17:307.210.37
16-06-2026 17:206.70.36
16-06-2026 17:106.170.32
16-06-2026 17:005.70.33
16-06-2026 16:505.280.38
16-06-2026 16:404.840.39
16-06-2026 16:304.40.4
16-06-2026 16:203.920.35
16-06-2026 16:103.420.25
16-06-2026 16:002.90.11
16-06-2026 15:502.44-0.01
16-06-2026 15:402.140.01
16-06-2026 15:301.69-0.18
16-06-2026 15:201.19-0.45
16-06-2026 15:101-0.47
16-06-2026 15:001.02-0.33
16-06-2026 14:501.1-0.18
16-06-2026 14:401.24-0.04
16-06-2026 14:301.390.07
16-06-2026 14:201.540.13
16-06-2026 14:101.740.17
16-06-2026 14:001.940.17
16-06-2026 13:502.160.16
16-06-2026 13:402.40.12
16-06-2026 13:302.620.04
16-06-2026 13:202.87-0.03
16-06-2026 13:103.14-0.1
16-06-2026 13:003.42-0.18
16-06-2026 12:503.71-0.24
16-06-2026 12:404-0.3
16-06-2026 12:304.3-0.35
16-06-2026 12:204.63-0.37
16-06-2026 12:104.93-0.41
16-06-2026 12:005.23-0.45
16-06-2026 11:505.55-0.45
16-06-2026 11:405.86-0.46
16-06-2026 11:306.18-0.45
16-06-2026 11:206.49-0.45
16-06-2026 11:106.82-0.43
16-06-2026 11:007.15-0.42
16-06-2026 10:507.5-0.4
16-06-2026 10:407.83-0.4
16-06-2026 10:308.18-0.4
16-06-2026 10:208.53-0.4
16-06-2026 10:108.91-0.39
16-06-2026 10:009.29-0.39
16-06-2026 09:509.69-0.38
16-06-2026 09:4010.11-0.35
16-06-2026 09:3010.54-0.32
16-06-2026 09:2010.96-0.28
16-06-2026 09:1011.39-0.22
16-06-2026 09:0011.8-0.15
16-06-2026 08:5012.21-0.06
16-06-2026 08:4012.52-0.02
16-06-2026 08:3012.810.04
16-06-2026 08:2013.050.11
16-06-2026 08:1013.220.17