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
10-04-2026 09:207.980.46
 Next HWNext LW
11:55, 9.59 18:01, 3.78
Date Highest 2026 Date Lowest 2026
04-02 14.02m 21-03 0.33m
Time (GMT)ElevationResidual
18-01-2026 00:003.08-0.21
17-01-2026 23:503.31-0.19
17-01-2026 23:403.55-0.16
17-01-2026 23:303.79-0.15
17-01-2026 23:204.06-0.14
17-01-2026 23:104.32-0.13
17-01-2026 23:004.59-0.13
17-01-2026 22:504.87-0.13
17-01-2026 22:405.14-0.15
17-01-2026 22:305.42-0.16
17-01-2026 22:205.7-0.19
17-01-2026 22:106-0.21
17-01-2026 22:006.3-0.23
17-01-2026 21:506.6-0.26
17-01-2026 21:406.9-0.29
17-01-2026 21:307.22-0.31
17-01-2026 21:207.53-0.34
17-01-2026 21:107.84-0.37
17-01-2026 21:008.16-0.38
17-01-2026 20:508.51-0.36
17-01-2026 20:408.86-0.34
17-01-2026 20:309.21-0.3
17-01-2026 20:209.55-0.26
17-01-2026 20:109.89-0.2
17-01-2026 20:0010.21-0.15
17-01-2026 19:5010.51-0.09
17-01-2026 19:4010.8-0.01
17-01-2026 19:3011.030.03
17-01-2026 19:2011.230.07
17-01-2026 19:1011.40.12
17-01-2026 19:0011.540.17
17-01-2026 18:5011.630.21
17-01-2026 18:4011.670.24
17-01-2026 18:3011.660.25
17-01-2026 18:2011.60.26
17-01-2026 18:1011.510.27
17-01-2026 18:0011.370.27
17-01-2026 17:5011.20.28
17-01-2026 17:40110.29
17-01-2026 17:3010.790.32
17-01-2026 17:2010.540.33
17-01-2026 17:1010.250.33
17-01-2026 17:009.960.34
17-01-2026 16:509.650.36
17-01-2026 16:409.320.37
17-01-2026 16:308.980.37
17-01-2026 16:208.640.38
17-01-2026 16:108.280.38
17-01-2026 16:007.930.39
17-01-2026 15:507.570.39
17-01-2026 15:407.210.39
17-01-2026 15:306.860.41
17-01-2026 15:206.520.43
17-01-2026 15:106.190.46
17-01-2026 15:005.830.47
17-01-2026 14:505.520.5
17-01-2026 14:405.180.5
17-01-2026 14:304.820.46
17-01-2026 14:204.450.4
17-01-2026 14:104.080.31
17-01-2026 14:003.710.2
17-01-2026 13:503.350.07
17-01-2026 13:403.07-0.02
17-01-2026 13:302.8-0.13
17-01-2026 13:202.54-0.27
17-01-2026 13:102.34-0.38
17-01-2026 13:002.24-0.42
17-01-2026 12:502.24-0.41
17-01-2026 12:402.31-0.36
17-01-2026 12:302.39-0.33
17-01-2026 12:202.53-0.28
17-01-2026 12:102.68-0.24
17-01-2026 12:002.87-0.19
17-01-2026 11:503.06-0.15
17-01-2026 11:403.27-0.13
17-01-2026 11:303.48-0.11
17-01-2026 11:203.68-0.11
17-01-2026 11:103.94-0.08
17-01-2026 11:004.19-0.07
17-01-2026 10:504.43-0.07
17-01-2026 10:404.69-0.06
17-01-2026 10:304.94-0.07
17-01-2026 10:205.19-0.1
17-01-2026 10:105.48-0.1
17-01-2026 10:005.76-0.12
17-01-2026 09:506.06-0.13
17-01-2026 09:406.34-0.17
17-01-2026 09:306.63-0.2
17-01-2026 09:206.92-0.24
17-01-2026 09:107.23-0.27
17-01-2026 09:007.53-0.3
17-01-2026 08:507.84-0.32
17-01-2026 08:408.15-0.35
17-01-2026 08:308.49-0.34
17-01-2026 08:208.83-0.32
17-01-2026 08:109.17-0.28
17-01-2026 08:009.51-0.23
17-01-2026 07:509.85-0.17
17-01-2026 07:4010.17-0.11
17-01-2026 07:3010.47-0.04
17-01-2026 07:2010.760.03
17-01-2026 07:1011.020.11
17-01-2026 07:0011.230.16
17-01-2026 06:5011.410.22
17-01-2026 06:4011.560.27
17-01-2026 06:3011.670.33
17-01-2026 06:2011.740.38
17-01-2026 06:1011.760.41
17-01-2026 06:0011.720.42
17-01-2026 05:5011.630.42
17-01-2026 05:4011.510.43
17-01-2026 05:3011.360.43
17-01-2026 05:2011.170.43
17-01-2026 05:1010.940.42
17-01-2026 05:0010.70.42
17-01-2026 04:5010.430.42
17-01-2026 04:4010.120.39
17-01-2026 04:309.790.37
17-01-2026 04:209.460.36
17-01-2026 04:109.120.34
17-01-2026 04:008.780.34
17-01-2026 03:508.440.34
17-01-2026 03:408.070.31
17-01-2026 03:307.720.31
17-01-2026 03:207.380.31
17-01-2026 03:107.040.32
17-01-2026 03:006.70.32
17-01-2026 02:506.390.35
17-01-2026 02:406.060.37
17-01-2026 02:305.740.37
17-01-2026 02:205.450.4
17-01-2026 02:105.130.39
17-01-2026 02:004.830.38
17-01-2026 01:504.530.35
17-01-2026 01:404.210.28
17-01-2026 01:303.90.2
17-01-2026 01:203.610.1
17-01-2026 01:103.360.02
17-01-2026 01:003.13-0.07
17-01-2026 00:502.92-0.18
17-01-2026 00:402.74-0.29
17-01-2026 00:302.64-0.36
17-01-2026 00:202.61-0.39
17-01-2026 00:102.63-0.4