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
22-04-2026 02:104.8-0.57
 Next HWNext LW
10:35, 11.92 04:47, 1.63
Date Highest 2026 Date Lowest 2026
04-02 14.02m 21-03 0.33m
Time (GMT)ElevationResidual
18-07-2025 00:0011.890.08
17-07-2025 23:5011.880.08
17-07-2025 23:4011.820.07
17-07-2025 23:3011.70.04
17-07-2025 23:2011.550.01
17-07-2025 23:1011.35-0.02
17-07-2025 23:0011.14-0.04
17-07-2025 22:5010.9-0.06
17-07-2025 22:4010.63-0.09
17-07-2025 22:3010.34-0.12
17-07-2025 22:2010.02-0.15
17-07-2025 22:109.71-0.17
17-07-2025 22:009.37-0.19
17-07-2025 21:509.04-0.18
17-07-2025 21:408.69-0.19
17-07-2025 21:308.31-0.21
17-07-2025 21:207.95-0.2
17-07-2025 21:107.56-0.21
17-07-2025 21:007.2-0.19
17-07-2025 20:506.84-0.15
17-07-2025 20:406.49-0.1
17-07-2025 20:306.14-0.04
17-07-2025 20:205.810.04
17-07-2025 20:105.480.11
17-07-2025 20:005.190.21
17-07-2025 19:504.840.24
17-07-2025 19:404.510.27
17-07-2025 19:304.140.24
17-07-2025 19:203.760.18
17-07-2025 19:103.390.1
17-07-2025 19:003.070.03
17-07-2025 18:502.79-0.03
17-07-2025 18:402.45-0.17
17-07-2025 18:302.15-0.34
17-07-2025 18:201.99-0.39
17-07-2025 18:101.98-0.34
17-07-2025 18:002.04-0.25
17-07-2025 17:502.16-0.15
17-07-2025 17:402.3-0.07
17-07-2025 17:302.46-0
17-07-2025 17:202.640.06
17-07-2025 17:102.830.09
17-07-2025 17:003.040.13
17-07-2025 16:503.290.17
17-07-2025 16:403.50.18
17-07-2025 16:303.770.22
17-07-2025 16:204.020.23
17-07-2025 16:104.280.26
17-07-2025 16:004.550.29
17-07-2025 15:504.810.31
17-07-2025 15:405.080.33
17-07-2025 15:305.370.38
17-07-2025 15:205.650.41
17-07-2025 15:105.940.44
17-07-2025 15:006.220.47
17-07-2025 14:506.520.49
17-07-2025 14:406.810.49
17-07-2025 14:307.110.49
17-07-2025 14:207.420.48
17-07-2025 14:107.720.44
17-07-2025 14:008.030.39
17-07-2025 13:508.370.35
17-07-2025 13:408.70.29
17-07-2025 13:309.040.24
17-07-2025 13:209.370.17
17-07-2025 13:109.70.12
17-07-2025 13:0010.040.07
17-07-2025 12:5010.370.05
17-07-2025 12:4010.710.06
17-07-2025 12:3011.030.08
17-07-2025 12:2011.320.11
17-07-2025 12:1011.570.15
17-07-2025 12:0011.780.2
17-07-2025 11:5011.940.24
17-07-2025 11:4012.010.25
17-07-2025 11:3012.020.25
17-07-2025 11:2011.990.26
17-07-2025 11:1011.880.24
17-07-2025 11:0011.730.2
17-07-2025 10:5011.530.17
17-07-2025 10:4011.310.15
17-07-2025 10:3011.060.12
17-07-2025 10:2010.750.06
17-07-2025 10:1010.420.01
17-07-2025 10:0010.1-0.02
17-07-2025 09:509.74-0.05
17-07-2025 09:409.36-0.11
17-07-2025 09:308.98-0.14
17-07-2025 09:208.58-0.18
17-07-2025 09:108.15-0.23
17-07-2025 09:007.75-0.25
17-07-2025 08:507.33-0.26
17-07-2025 08:406.93-0.26
17-07-2025 08:306.54-0.22
17-07-2025 08:206.17-0.16
17-07-2025 08:105.78-0.12
17-07-2025 08:005.44-0.03
17-07-2025 07:505.120.07
17-07-2025 07:404.750.12
17-07-2025 07:304.370.15
17-07-2025 07:203.980.14
17-07-2025 07:103.570.09
17-07-2025 07:003.170.03
17-07-2025 06:502.84-0
17-07-2025 06:402.55-0.04
17-07-2025 06:302.2-0.17
17-07-2025 06:201.9-0.3
17-07-2025 06:101.76-0.31
17-07-2025 06:001.75-0.23
17-07-2025 05:501.84-0.11
17-07-2025 05:401.95-0.01
17-07-2025 05:302.090.07
17-07-2025 05:202.260.15
17-07-2025 05:102.420.18
17-07-2025 05:002.630.22
17-07-2025 04:502.830.22
17-07-2025 04:403.070.25
17-07-2025 04:303.310.24
17-07-2025 04:203.550.24
17-07-2025 04:103.820.25
17-07-2025 04:004.090.26
17-07-2025 03:504.360.26
17-07-2025 03:404.630.28
17-07-2025 03:304.910.3
17-07-2025 03:205.190.33
17-07-2025 03:105.470.35
17-07-2025 03:005.750.38
17-07-2025 02:506.040.42
17-07-2025 02:406.340.46
17-07-2025 02:306.640.5
17-07-2025 02:206.940.52
17-07-2025 02:107.260.54
17-07-2025 02:007.570.54
17-07-2025 01:507.890.53
17-07-2025 01:408.220.51
17-07-2025 01:308.560.47
17-07-2025 01:208.90.43
17-07-2025 01:109.250.38
17-07-2025 01:009.610.34
17-07-2025 00:509.970.3
17-07-2025 00:4010.330.26
17-07-2025 00:3010.670.23
17-07-2025 00:2011.020.23
17-07-2025 00:1011.360.26