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
16-05-2026 09:008.44-0.1
 Next HWNext LW
18:58, 13.65 13:23, 0.93
Date Highest 2026 Date Lowest 2026
04-02 14.02m 21-03 0.33m
Time (GMT)ElevationResidual
16-05-2026 09:008.44-0.1
16-05-2026 08:508.8-0.18
16-05-2026 08:409.18-0.26
16-05-2026 08:309.56-0.34
16-05-2026 08:209.98-0.38
16-05-2026 08:1010.42-0.4
16-05-2026 08:0010.85-0.41
16-05-2026 07:5011.28-0.4
16-05-2026 07:4011.71-0.36
16-05-2026 07:3012.11-0.32
16-05-2026 07:2013.230.5
16-05-2026 07:1012.76-0.23
16-05-2026 07:0013.02-0.17
16-05-2026 06:5013.22-0.09
16-05-2026 06:4013.33-0.05
16-05-2026 06:3013.37-0.01
16-05-2026 06:2013.3-0.01
16-05-2026 06:1013.15-0.02
16-05-2026 06:0012.96-0
16-05-2026 05:5012.730.02
16-05-2026 05:4012.460.07
16-05-2026 05:3012.140.1
16-05-2026 05:2011.780.14
16-05-2026 05:1011.370.16
16-05-2026 05:0010.970.21
16-05-2026 04:5010.540.25
16-05-2026 04:4010.080.28
16-05-2026 04:309.590.31
16-05-2026 04:209.10.32
16-05-2026 04:108.570.3
16-05-2026 04:008.050.3
16-05-2026 03:507.550.32
16-05-2026 03:407.060.35
16-05-2026 03:306.60.4
16-05-2026 03:206.10.41
16-05-2026 03:105.660.47
16-05-2026 03:005.270.57
16-05-2026 02:504.850.62
16-05-2026 02:404.430.66
16-05-2026 02:303.960.63
16-05-2026 02:203.480.55
16-05-2026 02:103.010.45
16-05-2026 02:002.570.34
16-05-2026 01:502.230.28
16-05-2026 01:401.880.16
16-05-2026 01:301.42-0.1
16-05-2026 01:201.15-0.24
16-05-2026 01:101.1-0.21
16-05-2026 01:001.15-0.13
16-05-2026 00:501.26-0.05
16-05-2026 00:401.40.03
16-05-2026 00:301.560.08
16-05-2026 00:201.730.1
16-05-2026 00:101.910.1
16-05-2026 00:002.150.12
15-05-2026 23:502.360.1
15-05-2026 23:402.580.07
15-05-2026 23:302.840.06
15-05-2026 23:203.110.06
15-05-2026 23:103.380.06
15-05-2026 23:003.670.07
15-05-2026 22:503.970.09
15-05-2026 22:404.30.14
15-05-2026 22:304.610.16
15-05-2026 22:204.910.18
15-05-2026 22:105.230.2
15-05-2026 22:005.540.21
15-05-2026 21:505.850.22
15-05-2026 21:406.170.22
15-05-2026 21:306.490.2
15-05-2026 21:206.810.18
15-05-2026 21:107.140.15
15-05-2026 21:007.470.09
15-05-2026 20:507.810.03
15-05-2026 20:408.15-0.05
15-05-2026 20:308.5-0.13
15-05-2026 20:208.86-0.21
15-05-2026 20:109.23-0.29
15-05-2026 20:009.63-0.34
15-05-2026 19:5010.05-0.37
15-05-2026 19:4010.45-0.4
15-05-2026 19:3010.85-0.42
15-05-2026 19:2011.27-0.4
15-05-2026 19:1011.67-0.36
15-05-2026 19:0012.04-0.31
15-05-2026 18:5012.32-0.3
15-05-2026 18:4012.59-0.24
15-05-2026 18:3012.82-0.18
15-05-2026 18:2012.96-0.13
15-05-2026 18:1013.05-0.08
15-05-2026 18:0013.01-0.08
15-05-2026 17:5012.9-0.09
15-05-2026 17:4012.75-0.09
15-05-2026 17:3012.55-0.07
15-05-2026 17:2012.32-0.03
15-05-2026 17:1012.060.02
15-05-2026 17:0011.750.07
15-05-2026 16:5011.390.1
15-05-2026 16:4011.010.14
15-05-2026 16:3010.610.19
15-05-2026 16:2010.180.22
15-05-2026 16:109.720.23
15-05-2026 16:009.240.24
15-05-2026 15:508.750.24
15-05-2026 15:408.240.22
15-05-2026 15:307.750.23
15-05-2026 15:207.280.26
15-05-2026 15:106.810.28
15-05-2026 15:006.350.31
15-05-2026 14:505.90.35
15-05-2026 14:405.50.43
15-05-2026 14:305.10.49
15-05-2026 14:204.710.55
15-05-2026 14:104.270.54
15-05-2026 14:003.810.48
15-05-2026 13:503.320.37
15-05-2026 13:402.840.23
15-05-2026 13:302.430.13
15-05-2026 13:202.130.08
15-05-2026 13:101.73-0.11
15-05-2026 13:001.34-0.34
15-05-2026 12:501.2-0.37
15-05-2026 12:401.2-0.3
15-05-2026 12:301.3-0.18
15-05-2026 12:201.41-0.1
15-05-2026 12:101.55-0.04
15-05-2026 12:001.720.03
15-05-2026 11:501.90.07
15-05-2026 11:402.10.1
15-05-2026 11:302.310.11
15-05-2026 11:202.530.12
15-05-2026 11:102.770.13
15-05-2026 11:003.010.12
15-05-2026 10:503.270.14
15-05-2026 10:403.570.18
15-05-2026 10:303.890.24
15-05-2026 10:204.180.26
15-05-2026 10:104.470.28
15-05-2026 10:004.760.29
15-05-2026 09:505.070.32
15-05-2026 09:405.370.33
15-05-2026 09:305.680.33
15-05-2026 09:2060.33
15-05-2026 09:106.290.3
15-05-2026 09:006.630.29
15-05-2026 08:506.940.24
15-05-2026 08:407.270.19
15-05-2026 08:307.590.13
15-05-2026 08:207.910.04
15-05-2026 08:108.26-0.04
15-05-2026 08:008.61-0.11
15-05-2026 07:508.98-0.17
15-05-2026 07:409.36-0.23
15-05-2026 07:309.77-0.25
15-05-2026 07:2010.16-0.27
15-05-2026 07:1010.56-0.28
15-05-2026 07:0010.94-0.28
15-05-2026 06:5011.33-0.25
15-05-2026 06:4011.7-0.2
15-05-2026 06:3012.01-0.16
15-05-2026 06:2012.27-0.12
15-05-2026 06:1012.49-0.07
15-05-2026 06:0012.65-0.03
15-05-2026 05:5012.740.01
15-05-2026 05:4012.73-0.01
15-05-2026 05:3012.65-0.02
15-05-2026 05:2012.52-0.05
15-05-2026 05:1012.32-0.07
15-05-2026 05:0012.08-0.09
15-05-2026 04:5011.83-0.08
15-05-2026 04:4011.54-0.06
15-05-2026 04:3011.18-0.07
15-05-2026 04:2010.82-0.06
15-05-2026 04:1010.45-0.03
15-05-2026 04:0010.06-0.01
15-05-2026 03:509.650.02
15-05-2026 03:409.220.03
15-05-2026 03:308.780.04
15-05-2026 03:208.310.02
15-05-2026 03:107.840.02
15-05-2026 03:007.390.03
15-05-2026 02:506.950.05
15-05-2026 02:406.530.09
15-05-2026 02:306.110.12
15-05-2026 02:205.680.14
15-05-2026 02:105.320.22
15-05-2026 02:004.960.28
15-05-2026 01:504.590.32
15-05-2026 01:404.180.29
15-05-2026 01:303.770.23
15-05-2026 01:203.330.12
15-05-2026 01:102.92-0
15-05-2026 01:002.55-0.12
15-05-2026 00:502.25-0.21
15-05-2026 00:401.95-0.34
15-05-2026 00:301.61-0.55
15-05-2026 00:201.42-0.66
15-05-2026 00:101.39-0.65
15-05-2026 00:001.44-0.59
14-05-2026 23:501.54-0.53
14-05-2026 23:401.67-0.46
14-05-2026 23:301.82-0.42
14-05-2026 23:201.98-0.38
14-05-2026 23:102.16-0.34
14-05-2026 23:002.39-0.27
14-05-2026 22:502.59-0.26
14-05-2026 22:402.81-0.22
14-05-2026 22:303.07-0.17
14-05-2026 22:203.33-0.12
14-05-2026 22:103.59-0.08
14-05-2026 22:003.88-0.01
14-05-2026 21:504.180.05
14-05-2026 21:404.470.1
14-05-2026 21:304.770.14
14-05-2026 21:205.060.17
14-05-2026 21:105.340.17
14-05-2026 21:005.640.18
14-05-2026 20:505.940.18
14-05-2026 20:406.250.16
14-05-2026 20:306.550.14
14-05-2026 20:206.870.1
14-05-2026 20:107.180.05
14-05-2026 20:007.5-0.01
14-05-2026 19:507.83-0.07
14-05-2026 19:408.17-0.13
14-05-2026 19:308.52-0.18
14-05-2026 19:208.88-0.22
14-05-2026 19:109.24-0.26
14-05-2026 19:009.62-0.28
14-05-2026 18:509.97-0.31
14-05-2026 18:4010.33-0.32
14-05-2026 18:3010.67-0.32
14-05-2026 18:2011.04-0.26
14-05-2026 18:1011.36-0.21
14-05-2026 18:0011.65-0.16
14-05-2026 17:5011.89-0.11
14-05-2026 17:4012.08-0.06
14-05-2026 17:3012.22-0.01
14-05-2026 17:2012.280.01
14-05-2026 17:1012.25-0
14-05-2026 17:0012.15-0.03
14-05-2026 16:5012-0.06
14-05-2026 16:4011.81-0.08
14-05-2026 16:3011.59-0.09
14-05-2026 16:2011.34-0.08
14-05-2026 16:1011.07-0.06
14-05-2026 16:0010.76-0.05
14-05-2026 15:5010.44-0.03
14-05-2026 15:4010.10
14-05-2026 15:309.730.03
14-05-2026 15:209.350.04
14-05-2026 15:108.940.04
14-05-2026 15:008.50.03
14-05-2026 14:508.070.02
14-05-2026 14:407.630.01
14-05-2026 14:307.220.02
14-05-2026 14:206.810.04
14-05-2026 14:106.40.06
14-05-2026 14:005.990.06
14-05-2026 13:505.630.12
14-05-2026 13:405.280.17
14-05-2026 13:204.550.22
14-05-2026 13:104.140.15
14-05-2026 13:003.720.07
14-05-2026 12:503.28-0.07
14-05-2026 12:402.89-0.2
14-05-2026 12:302.55-0.3
14-05-2026 12:202.26-0.39
14-05-2026 12:101.93-0.57
14-05-2026 12:001.63-0.75
14-05-2026 11:501.51-0.79
14-05-2026 11:401.52-0.74
14-05-2026 11:301.59-0.65
14-05-2026 11:201.73-0.54
14-05-2026 11:101.83-0.49
14-05-2026 11:002.01-0.39
14-05-2026 10:502.19-0.31
14-05-2026 10:402.38-0.25
14-05-2026 10:302.57-0.19
14-05-2026 10:202.81-0.11
14-05-2026 10:103.03-0.05
14-05-2026 10:003.290.02
14-05-2026 09:503.540.09
14-05-2026 09:403.830.17
14-05-2026 09:304.120.25
14-05-2026 09:204.40.31
14-05-2026 09:104.70.37