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
11-05-2026 17:305.980.16
 Next HWNext LW
02:35, 10.14 19:52, 3.99
Date Highest 2026 Date Lowest 2026
04-02 14.02m 21-03 0.33m
Time (GMT)ElevationResidual
11-05-2026 17:305.980.16
11-05-2026 17:206.190.14
11-05-2026 17:106.410.12
11-05-2026 17:006.620.1
11-05-2026 16:506.860.09
11-05-2026 16:407.070.06
11-05-2026 16:307.30.04
11-05-2026 16:207.520.01
11-05-2026 16:107.74-0.03
11-05-2026 16:007.96-0.05
11-05-2026 15:508.18-0.08
11-05-2026 15:408.38-0.11
11-05-2026 15:308.59-0.13
11-05-2026 15:208.76-0.17
11-05-2026 15:108.95-0.18
11-05-2026 15:009.11-0.19
11-05-2026 14:509.26-0.2
11-05-2026 14:409.38-0.2
11-05-2026 14:309.49-0.2
11-05-2026 14:209.57-0.2
11-05-2026 14:109.63-0.18
11-05-2026 14:009.67-0.17
11-05-2026 13:509.68-0.15
11-05-2026 13:409.67-0.14
11-05-2026 13:309.62-0.13
11-05-2026 13:209.56-0.11
11-05-2026 13:109.48-0.09
11-05-2026 13:009.37-0.08
11-05-2026 12:509.26-0.06
11-05-2026 12:409.13-0.04
11-05-2026 12:308.99-0.01
11-05-2026 12:208.830.02
11-05-2026 12:108.670.05
11-05-2026 12:008.490.07
11-05-2026 11:508.290.09
11-05-2026 11:408.110.12
11-05-2026 11:307.910.16
11-05-2026 11:207.680.16
11-05-2026 11:107.480.2
11-05-2026 11:007.250.22
11-05-2026 10:507.050.26
11-05-2026 10:406.840.29
11-05-2026 10:306.640.32
11-05-2026 10:206.430.35
11-05-2026 10:106.210.36
11-05-2026 10:005.990.36
11-05-2026 09:505.770.34
11-05-2026 09:405.540.31
11-05-2026 09:305.340.3
11-05-2026 09:205.140.28
11-05-2026 09:104.930.23
11-05-2026 09:004.730.19
11-05-2026 08:504.540.15
11-05-2026 08:404.350.09
11-05-2026 08:304.170.02
11-05-2026 08:204.02-0.03
11-05-2026 08:103.89-0.06
11-05-2026 08:003.77-0.1
11-05-2026 07:503.7-0.11
11-05-2026 07:403.64-0.12
11-05-2026 07:303.61-0.12
11-05-2026 07:203.63-0.1
11-05-2026 07:103.68-0.06
11-05-2026 07:003.77-0.01
11-05-2026 06:503.880.04
11-05-2026 06:4040.08
11-05-2026 06:304.140.12
11-05-2026 06:204.30.15
11-05-2026 06:104.480.18
11-05-2026 06:004.640.18
11-05-2026 05:504.830.2
11-05-2026 05:405.040.2
11-05-2026 05:305.230.19
11-05-2026 05:205.420.17
11-05-2026 05:105.620.15
11-05-2026 05:005.830.13
11-05-2026 04:506.050.12
11-05-2026 04:406.270.1
11-05-2026 04:306.480.08
11-05-2026 04:206.710.06
11-05-2026 04:106.930.04
11-05-2026 04:007.150.02
11-05-2026 03:507.38-0
11-05-2026 03:407.6-0.02
11-05-2026 03:307.81-0.05
11-05-2026 03:208.03-0.07
11-05-2026 03:108.24-0.09
11-05-2026 03:008.44-0.11
11-05-2026 02:508.64-0.13
11-05-2026 02:408.83-0.14
11-05-2026 02:309-0.15
11-05-2026 02:209.16-0.15
11-05-2026 02:109.3-0.16
11-05-2026 02:009.42-0.16
11-05-2026 01:509.51-0.16
11-05-2026 01:409.59-0.16
11-05-2026 01:309.64-0.15
11-05-2026 01:209.68-0.14
11-05-2026 01:109.68-0.14
11-05-2026 01:009.66-0.12
11-05-2026 00:509.62-0.12
11-05-2026 00:409.56-0.12
11-05-2026 00:309.47-0.12
11-05-2026 00:209.38-0.11
11-05-2026 00:109.27-0.09
11-05-2026 00:009.17-0.07
10-05-2026 23:509.03-0.05
10-05-2026 23:408.9-0.03
10-05-2026 23:308.750
10-05-2026 23:208.590.02
10-05-2026 23:108.410.03
10-05-2026 23:008.230.06
10-05-2026 22:508.050.07
10-05-2026 22:407.860.1
10-05-2026 22:307.660.12
10-05-2026 22:207.470.14
10-05-2026 22:107.280.17
10-05-2026 22:007.10.2
10-05-2026 21:506.910.23
10-05-2026 21:406.730.27
10-05-2026 21:306.550.3
10-05-2026 21:206.380.33
10-05-2026 21:106.190.35
10-05-2026 21:006.010.36
10-05-2026 20:505.830.37
10-05-2026 20:405.650.38
10-05-2026 20:305.470.38
10-05-2026 20:205.290.37
10-05-2026 20:105.120.36
10-05-2026 20:004.950.35
10-05-2026 19:504.780.32
10-05-2026 19:404.610.29
10-05-2026 19:304.440.25
10-05-2026 19:204.290.2
10-05-2026 19:104.170.17
10-05-2026 19:004.060.13
10-05-2026 18:503.980.09
10-05-2026 18:403.90.04
10-05-2026 18:303.870
10-05-2026 18:203.88-0.02
10-05-2026 18:103.91-0.04
10-05-2026 18:003.99-0.05
10-05-2026 17:504.08-0.06
10-05-2026 17:404.2-0.06
10-05-2026 17:304.32-0.07
10-05-2026 17:204.46-0.09
10-05-2026 17:104.62-0.1
10-05-2026 17:004.78-0.12
10-05-2026 16:504.96-0.13
10-05-2026 16:405.15-0.15
10-05-2026 16:305.33-0.17
10-05-2026 16:205.51-0.21
10-05-2026 16:105.7-0.23
10-05-2026 16:005.9-0.26
10-05-2026 15:506.1-0.29
10-05-2026 15:406.3-0.33
10-05-2026 15:306.52-0.35
10-05-2026 15:206.73-0.39
10-05-2026 15:106.94-0.42
10-05-2026 15:007.16-0.45
10-05-2026 14:507.37-0.49
10-05-2026 14:407.58-0.51
10-05-2026 14:307.8-0.53
10-05-2026 14:208.02-0.54
10-05-2026 14:108.22-0.55
10-05-2026 14:008.42-0.55
10-05-2026 13:508.63-0.52
10-05-2026 13:408.79-0.51
10-05-2026 13:308.95-0.49
10-05-2026 13:209.08-0.47
10-05-2026 13:109.18-0.46
10-05-2026 13:009.27-0.43
10-05-2026 12:509.33-0.4
10-05-2026 12:409.37-0.37
10-05-2026 12:309.38-0.35
10-05-2026 12:209.36-0.32
10-05-2026 12:109.33-0.3
10-05-2026 12:009.27-0.28
10-05-2026 11:509.2-0.25
10-05-2026 11:409.12-0.21
10-05-2026 11:309-0.2
10-05-2026 11:208.87-0.18
10-05-2026 11:108.73-0.16
10-05-2026 11:008.58-0.13
10-05-2026 10:508.41-0.11
10-05-2026 10:408.23-0.09
10-05-2026 10:308.03-0.08
10-05-2026 10:207.83-0.06
10-05-2026 10:107.61-0.06
10-05-2026 10:007.39-0.04
10-05-2026 09:507.16-0.03
10-05-2026 09:406.95-0.01
10-05-2026 09:306.730.01
10-05-2026 09:206.50.01
10-05-2026 09:106.260.01
10-05-2026 09:006.050.04
10-05-2026 08:505.830.04
10-05-2026 08:405.610.04
10-05-2026 08:305.410.07
10-05-2026 08:205.210.08
10-05-2026 08:105.010.08
10-05-2026 08:004.820.08
10-05-2026 07:504.620.08
10-05-2026 07:404.40.04
10-05-2026 07:304.220.02
10-05-2026 07:204-0.05
10-05-2026 07:103.8-0.11
10-05-2026 07:003.63-0.17
10-05-2026 06:503.48-0.21
10-05-2026 06:403.35-0.28
10-05-2026 06:303.24-0.33
10-05-2026 06:203.17-0.38
10-05-2026 06:103.16-0.39
10-05-2026 06:003.2-0.38
10-05-2026 05:503.28-0.36
10-05-2026 05:403.4-0.33
10-05-2026 05:303.53-0.31
10-05-2026 05:203.69-0.28
10-05-2026 05:103.84-0.28
10-05-2026 05:004.01-0.27
10-05-2026 04:504.21-0.26
10-05-2026 04:404.4-0.26
10-05-2026 04:304.59-0.26
10-05-2026 04:204.8-0.26
10-05-2026 04:105.01-0.27
10-05-2026 04:005.23-0.26
10-05-2026 03:505.45-0.27
10-05-2026 03:405.69-0.25
10-05-2026 03:305.91-0.25
10-05-2026 03:206.13-0.27
10-05-2026 03:106.36-0.27
10-05-2026 03:006.59-0.28
10-05-2026 02:506.83-0.28
10-05-2026 02:407.06-0.3
10-05-2026 02:307.28-0.32
10-05-2026 02:207.51-0.34
10-05-2026 02:107.74-0.36
10-05-2026 02:007.95-0.39
10-05-2026 01:508.16-0.41
10-05-2026 01:408.35-0.44
10-05-2026 01:308.57-0.43
10-05-2026 01:208.74-0.45
10-05-2026 01:108.92-0.45
10-05-2026 01:009.05-0.47
10-05-2026 00:509.18-0.47
10-05-2026 00:409.29-0.46
10-05-2026 00:309.37-0.46
10-05-2026 00:209.44-0.45
10-05-2026 00:109.48-0.45
10-05-2026 00:009.5-0.42
09-05-2026 23:509.51-0.41
09-05-2026 23:409.49-0.38
09-05-2026 23:309.45-0.37
09-05-2026 23:209.4-0.34
09-05-2026 23:109.34-0.3
09-05-2026 23:009.24-0.28
09-05-2026 22:509.15-0.24
09-05-2026 22:409.04-0.21
09-05-2026 22:308.93-0.16
09-05-2026 22:208.79-0.13
09-05-2026 22:108.67-0.07
09-05-2026 22:008.51-0.03
09-05-2026 21:508.350.01
09-05-2026 21:408.190.06
09-05-2026 21:308.010.11
09-05-2026 21:207.830.14
09-05-2026 21:107.640.19
09-05-2026 21:007.460.24
09-05-2026 20:507.280.3
09-05-2026 20:407.090.35
09-05-2026 20:306.910.42
09-05-2026 20:206.70.45
09-05-2026 20:106.520.51
09-05-2026 20:006.320.56
09-05-2026 19:506.120.6
09-05-2026 19:405.90.62
09-05-2026 19:305.680.64
09-05-2026 19:205.470.66
09-05-2026 19:105.270.67
09-05-2026 19:005.070.67
09-05-2026 18:504.850.65
09-05-2026 18:404.640.61
09-05-2026 18:304.420.54
09-05-2026 18:204.210.46
09-05-2026 18:104.020.37
09-05-2026 18:003.870.29
09-05-2026 17:503.720.18
09-05-2026 17:403.620.09
09-05-2026 17:303.560.01
09-05-2026 17:203.54-0.06
09-05-2026 17:103.57-0.11