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
18-01-2026 19:50120.17
 Next HWNext LW
07:41, 12.45 01:58, 2.05
Date Highest 2026 Date Lowest 2026
06-01 13.49m 06-01 0.83m
Time (GMT)ElevationResidual
08-12-2025 00:007.59-0.21
07-12-2025 23:507.93-0.17
07-12-2025 23:408.28-0.13
07-12-2025 23:308.65-0.1
07-12-2025 23:209-0.09
07-12-2025 23:109.4-0.04
07-12-2025 23:009.79-0.01
07-12-2025 22:5010.230.05
07-12-2025 22:4010.670.12
07-12-2025 22:3011.120.2
07-12-2025 22:2011.570.29
07-12-2025 22:1011.990.37
07-12-2025 22:0012.360.43
07-12-2025 21:5012.670.45
07-12-2025 21:4012.940.49
07-12-2025 21:3013.110.47
07-12-2025 21:2013.260.5
07-12-2025 21:1013.350.53
07-12-2025 21:0013.390.56
07-12-2025 20:5013.320.57
07-12-2025 20:4013.190.58
07-12-2025 20:3013.010.59
07-12-2025 20:2012.760.6
07-12-2025 20:1012.490.64
07-12-2025 20:0012.160.67
07-12-2025 19:5011.830.73
07-12-2025 19:4011.440.78
07-12-2025 19:3011.020.81
07-12-2025 19:2010.590.85
07-12-2025 19:1010.150.89
07-12-2025 19:009.710.93
07-12-2025 18:509.260.96
07-12-2025 18:408.80.98
07-12-2025 18:308.330.99
07-12-2025 18:207.860.98
07-12-2025 18:107.390.98
07-12-2025 18:006.981.01
07-12-2025 17:506.591.06
07-12-2025 17:406.171.08
07-12-2025 17:305.791.13
07-12-2025 17:205.441.2
07-12-2025 17:105.11.25
07-12-2025 17:004.741.27
07-12-2025 16:504.351.24
07-12-2025 16:403.931.16
07-12-2025 16:303.531.07
07-12-2025 16:203.160.97
07-12-2025 16:102.830.87
07-12-2025 16:002.470.7
07-12-2025 15:502.120.49
07-12-2025 15:401.880.33
07-12-2025 15:301.790.28
07-12-2025 15:201.790.26
07-12-2025 15:101.880.28
07-12-2025 15:0020.28
07-12-2025 14:502.160.27
07-12-2025 14:402.320.23
07-12-2025 14:302.530.19
07-12-2025 14:202.740.12
07-12-2025 14:102.990.07
07-12-2025 14:003.23-0.02
07-12-2025 13:503.53-0.06
07-12-2025 13:403.79-0.14
07-12-2025 13:304.08-0.19
07-12-2025 13:204.38-0.24
07-12-2025 13:104.66-0.29
07-12-2025 13:004.98-0.3
07-12-2025 12:505.25-0.34
07-12-2025 12:405.58-0.33
07-12-2025 12:305.89-0.32
07-12-2025 12:206.2-0.3
07-12-2025 12:106.51-0.28
07-12-2025 12:006.84-0.24
07-12-2025 11:507.17-0.2
07-12-2025 11:407.51-0.16
07-12-2025 11:307.85-0.13
07-12-2025 11:208.19-0.1
07-12-2025 11:108.54-0.09
07-12-2025 11:008.9-0.09
07-12-2025 10:509.27-0.08
07-12-2025 10:409.66-0.07
07-12-2025 10:3010.08-0.04
07-12-2025 10:2010.49-0.03
07-12-2025 10:1010.950.03
07-12-2025 10:0011.410.1
07-12-2025 09:5011.850.16
07-12-2025 09:4012.310.25
07-12-2025 09:3012.710.33
07-12-2025 09:2013.070.4
07-12-2025 09:1013.310.41
07-12-2025 09:0013.540.45
07-12-2025 08:5013.720.51
07-12-2025 08:4013.810.55
07-12-2025 08:3013.830.59
07-12-2025 08:2013.740.58
07-12-2025 08:1013.590.59
07-12-2025 08:0013.380.6
07-12-2025 07:5013.110.61
07-12-2025 07:4012.840.67
07-12-2025 07:3012.480.68
07-12-2025 07:2012.040.66
07-12-2025 07:1011.60.67
07-12-2025 07:0011.130.67
07-12-2025 06:5010.630.67
07-12-2025 06:4010.090.63
07-12-2025 06:309.520.56
07-12-2025 06:208.940.49
07-12-2025 06:108.360.42
07-12-2025 06:007.810.37
07-12-2025 05:507.270.33
07-12-2025 05:406.760.31
07-12-2025 05:306.220.25
07-12-2025 05:205.750.26
07-12-2025 05:105.310.29
07-12-2025 05:004.870.3
07-12-2025 04:504.380.27
07-12-2025 04:403.860.17
07-12-2025 04:303.340.06
07-12-2025 04:202.87-0.02
07-12-2025 04:102.44-0.09
07-12-2025 04:002.08-0.13
07-12-2025 03:501.57-0.36
07-12-2025 03:401.2-0.51
07-12-2025 03:301.11-0.41
07-12-2025 03:201.14-0.25
07-12-2025 03:101.24-0.08
07-12-2025 03:001.360.06
07-12-2025 02:501.520.18
07-12-2025 02:401.690.26
07-12-2025 02:301.890.3
07-12-2025 02:202.120.34
07-12-2025 02:102.330.31
07-12-2025 02:002.560.27
07-12-2025 01:502.810.21
07-12-2025 01:403.080.15
07-12-2025 01:303.350.07
07-12-2025 01:203.640.01
07-12-2025 01:103.95-0.05
07-12-2025 01:004.26-0.11
07-12-2025 00:504.56-0.16
07-12-2025 00:404.87-0.2
07-12-2025 00:305.18-0.24
07-12-2025 00:205.49-0.26
07-12-2025 00:105.82-0.26