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
11-03-2026 00:409.06-0.39
 Next HWNext LW
11:33, 10.3 05:32, 2.86
Date Highest 2026 Date Lowest 2026
04-02 14.02m 06-03 0.49m
Time (GMT)ElevationResidual
11-03-2026 00:409.06-0.39
11-03-2026 00:309.31-0.38
11-03-2026 00:209.52-0.4
11-03-2026 00:109.74-0.37
11-03-2026 00:009.94-0.35
10-03-2026 23:5010.11-0.31
10-03-2026 23:4010.27-0.26
10-03-2026 23:3010.41-0.2
10-03-2026 23:2010.5-0.15
10-03-2026 23:1010.56-0.1
10-03-2026 23:0010.58-0.05
10-03-2026 22:5010.58-0
10-03-2026 22:4010.550.04
10-03-2026 22:3010.480.08
10-03-2026 22:2010.40.12
10-03-2026 22:1010.280.16
10-03-2026 22:0010.160.2
10-03-2026 21:509.990.22
10-03-2026 21:409.80.24
10-03-2026 21:309.610.27
10-03-2026 21:209.390.29
10-03-2026 21:109.170.32
10-03-2026 21:008.940.35
10-03-2026 20:508.70.39
10-03-2026 20:408.460.44
10-03-2026 20:308.20.49
10-03-2026 20:207.950.56
10-03-2026 20:107.70.63
10-03-2026 20:007.450.71
10-03-2026 19:507.20.8
10-03-2026 19:406.940.88
10-03-2026 19:306.660.95
10-03-2026 19:206.381.02
10-03-2026 19:106.121.1
10-03-2026 19:005.831.14
10-03-2026 18:505.551.19
10-03-2026 18:405.261.2
10-03-2026 18:304.961.2
10-03-2026 18:204.641.14
10-03-2026 18:104.31.04
10-03-2026 18:003.990.93
10-03-2026 17:503.680.79
10-03-2026 17:403.420.66
10-03-2026 17:303.170.49
10-03-2026 17:202.960.33
10-03-2026 17:102.80.17
10-03-2026 17:002.740.07
10-03-2026 16:502.760.01
10-03-2026 16:402.82-0.05
10-03-2026 16:302.95-0.07
10-03-2026 16:203.11-0.1
10-03-2026 16:103.28-0.13
10-03-2026 16:003.45-0.18
10-03-2026 15:503.66-0.21
10-03-2026 15:403.89-0.23
10-03-2026 15:304.11-0.26
10-03-2026 15:204.36-0.28
10-03-2026 15:104.59-0.3
10-03-2026 15:004.84-0.31
10-03-2026 14:505.09-0.31
10-03-2026 14:405.34-0.33
10-03-2026 14:305.61-0.32
10-03-2026 14:205.89-0.3
10-03-2026 14:106.16-0.3
10-03-2026 14:006.44-0.3
10-03-2026 13:506.72-0.3
10-03-2026 13:407.01-0.31
10-03-2026 13:307.27-0.35
10-03-2026 13:207.55-0.39
10-03-2026 13:107.84-0.42
10-03-2026 13:008.14-0.44
10-03-2026 12:508.44-0.46
10-03-2026 12:408.72-0.5
10-03-2026 12:309.01-0.52
10-03-2026 12:209.3-0.52
10-03-2026 12:109.6-0.5
10-03-2026 12:009.87-0.47
10-03-2026 11:5010.14-0.42
10-03-2026 11:4010.35-0.39
10-03-2026 11:3010.56-0.33
10-03-2026 11:2010.7-0.3
10-03-2026 11:1010.82-0.25
10-03-2026 11:0010.89-0.21
10-03-2026 10:5010.93-0.17
10-03-2026 10:4010.91-0.15
10-03-2026 10:3010.86-0.13
10-03-2026 10:2010.78-0.1
10-03-2026 10:1010.68-0.07
10-03-2026 10:0010.52-0.07
10-03-2026 09:5010.36-0.05
10-03-2026 09:4010.18-0.03
10-03-2026 09:309.96-0.02
10-03-2026 09:209.73-0.01
10-03-2026 09:109.470
10-03-2026 09:009.220.03
10-03-2026 08:508.950.05
10-03-2026 08:408.670.08
10-03-2026 08:308.390.13
10-03-2026 08:208.120.19
10-03-2026 08:107.820.24
10-03-2026 08:007.540.32
10-03-2026 07:507.240.39
10-03-2026 07:406.940.46
10-03-2026 07:306.660.56
10-03-2026 07:206.360.64
10-03-2026 07:106.060.72
10-03-2026 07:005.730.77
10-03-2026 06:505.460.86
10-03-2026 06:405.120.87
10-03-2026 06:304.780.88
10-03-2026 06:204.420.83
10-03-2026 06:104.050.75
10-03-2026 06:003.660.62
10-03-2026 05:503.320.51
10-03-2026 05:403.020.4
10-03-2026 05:302.710.24
10-03-2026 05:202.390.02
10-03-2026 05:102.21-0.09
10-03-2026 05:002.17-0.12
10-03-2026 04:502.21-0.11
10-03-2026 04:402.3-0.08
10-03-2026 04:302.44-0.05
10-03-2026 04:202.59-0.05
10-03-2026 04:102.75-0.07
10-03-2026 04:002.96-0.07
10-03-2026 03:503.2-0.06
10-03-2026 03:403.44-0.06
10-03-2026 03:303.69-0.07
10-03-2026 03:203.93-0.09
10-03-2026 03:104.2-0.09
10-03-2026 03:004.45-0.11
10-03-2026 02:504.71-0.12
10-03-2026 02:404.97-0.12
10-03-2026 02:305.23-0.13
10-03-2026 02:205.51-0.11
10-03-2026 02:105.8-0.1
10-03-2026 02:006.08-0.09
10-03-2026 01:506.37-0.08
10-03-2026 01:406.66-0.09
10-03-2026 01:306.95-0.1
10-03-2026 01:207.26-0.11
10-03-2026 01:107.55-0.15
10-03-2026 01:007.86-0.17
10-03-2026 00:508.18-0.2
10-03-2026 00:408.49-0.24
10-03-2026 00:308.8-0.28
10-03-2026 00:209.12-0.31
10-03-2026 00:109.42-0.34
10-03-2026 00:009.74-0.34
09-03-2026 23:5010.05-0.32
09-03-2026 23:4010.34-0.29
09-03-2026 23:3010.6-0.26
09-03-2026 23:2010.82-0.24
09-03-2026 23:1011.01-0.19
09-03-2026 23:0011.16-0.14
09-03-2026 22:5011.27-0.1
09-03-2026 22:4011.32-0.07
09-03-2026 22:3011.33-0.04
09-03-2026 22:2011.27-0.04
09-03-2026 22:1011.18-0.04
09-03-2026 22:0011.04-0.05
09-03-2026 21:5010.88-0.06
09-03-2026 21:4010.7-0.05
09-03-2026 21:3010.49-0.06
09-03-2026 21:2010.25-0.08
09-03-2026 21:109.99-0.1
09-03-2026 21:009.7-0.12
09-03-2026 20:509.42-0.12
09-03-2026 20:409.11-0.13
09-03-2026 20:308.8-0.14
09-03-2026 20:208.49-0.11
09-03-2026 20:108.19-0.07
09-03-2026 20:007.86-0.04
09-03-2026 19:507.530.01
09-03-2026 19:407.20.06
09-03-2026 19:306.890.15
09-03-2026 19:206.580.24
09-03-2026 19:106.260.32
09-03-2026 19:005.940.41
09-03-2026 18:505.610.49
09-03-2026 18:405.320.6
09-03-2026 18:304.990.65
09-03-2026 18:204.620.65
09-03-2026 18:104.220.6
09-03-2026 18:003.820.52
09-03-2026 17:503.440.42
09-03-2026 17:403.10.33
09-03-2026 17:302.820.26
09-03-2026 17:202.480.09
09-03-2026 17:102.19-0.08
09-03-2026 17:002.05-0.15
09-03-2026 16:502.03-0.14
09-03-2026 16:402.09-0.1
09-03-2026 16:302.2-0.05
09-03-2026 16:202.34-0.02
09-03-2026 16:102.50
09-03-2026 16:002.67-0
09-03-2026 15:502.88-0.01
09-03-2026 15:403.09-0.02
09-03-2026 15:303.32-0.03
09-03-2026 15:203.57-0.05
09-03-2026 15:103.83-0.05
09-03-2026 15:004.07-0.09
09-03-2026 14:504.33-0.1
09-03-2026 14:404.6-0.1
09-03-2026 14:304.89-0.09
09-03-2026 14:205.15-0.1
09-03-2026 14:105.44-0.09
09-03-2026 14:005.72-0.08
09-03-2026 13:506.01-0.07
09-03-2026 13:406.31-0.06
09-03-2026 13:306.6-0.07
09-03-2026 13:206.91-0.07
09-03-2026 13:107.23-0.08
09-03-2026 13:007.55-0.1
09-03-2026 12:507.87-0.13
09-03-2026 12:408.2-0.17
09-03-2026 12:308.54-0.21
09-03-2026 12:208.88-0.24
09-03-2026 12:109.24-0.26
09-03-2026 12:009.58-0.29
09-03-2026 11:509.92-0.31
09-03-2026 11:4010.27-0.3
09-03-2026 11:3010.6-0.27
09-03-2026 11:2010.9-0.24
09-03-2026 11:1011.15-0.22
09-03-2026 11:0011.39-0.17
09-03-2026 10:5011.58-0.12
09-03-2026 10:4011.69-0.1
09-03-2026 10:3011.76-0.07
09-03-2026 10:2011.75-0.07
09-03-2026 10:1011.69-0.08
09-03-2026 10:0011.59-0.1
09-03-2026 09:5011.44-0.11
09-03-2026 09:4011.26-0.13
09-03-2026 09:3011.06-0.14
09-03-2026 09:2010.81-0.16
09-03-2026 09:1010.54-0.19
09-03-2026 09:0010.24-0.22
09-03-2026 08:509.92-0.25
09-03-2026 08:409.6-0.27
09-03-2026 08:309.24-0.3
09-03-2026 08:208.88-0.32
09-03-2026 08:108.52-0.32
09-03-2026 08:008.16-0.31
09-03-2026 07:507.77-0.31
09-03-2026 07:407.39-0.29
09-03-2026 07:307.01-0.25
09-03-2026 07:206.65-0.19
09-03-2026 07:106.31-0.1
09-03-2026 07:005.93-0.04
09-03-2026 06:505.590.07
09-03-2026 06:405.260.17
09-03-2026 06:304.890.23
09-03-2026 06:204.50.26
09-03-2026 06:104.090.25
09-03-2026 06:003.630.16
09-03-2026 05:503.20.08
09-03-2026 05:402.820.01
09-03-2026 05:302.49-0.04
09-03-2026 05:202.1-0.21
09-03-2026 05:101.74-0.38
09-03-2026 05:001.58-0.4
09-03-2026 04:501.6-0.3
09-03-2026 04:401.65-0.2
09-03-2026 04:301.77-0.09
09-03-2026 04:201.930.01
09-03-2026 04:102.10.08
09-03-2026 04:002.30.14
09-03-2026 03:502.490.15
09-03-2026 03:402.730.18
09-03-2026 03:302.970.19
09-03-2026 03:203.210.18
09-03-2026 03:103.480.18
09-03-2026 03:003.730.15
09-03-2026 02:5040.14
09-03-2026 02:404.280.13
09-03-2026 02:304.550.12
09-03-2026 02:204.830.11
09-03-2026 02:105.10.1
09-03-2026 02:005.40.12
09-03-2026 01:505.70.13
09-03-2026 01:4060.15
09-03-2026 01:306.310.16
09-03-2026 01:206.60.16
09-03-2026 01:106.940.17
09-03-2026 01:007.240.15
09-03-2026 00:507.590.15
09-03-2026 00:407.920.12
09-03-2026 00:308.270.08
09-03-2026 00:208.630.05
09-03-2026 00:108.990.01