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
11-04-2026 11:308.460.13
 Next HWNext LW
13:10, 9.14 19:00, 4.35
Date Highest 2026 Date Lowest 2026
04-02 14.02m 21-03 0.33m
Time (GMT)ElevationResidual
16-12-2024 00:003.82-0.24
15-12-2024 23:504.14-0.24
15-12-2024 23:404.44-0.25
15-12-2024 23:304.75-0.26
15-12-2024 23:205.05-0.26
15-12-2024 23:105.36-0.25
15-12-2024 23:005.69-0.22
15-12-2024 22:506.01-0.21
15-12-2024 22:406.34-0.18
15-12-2024 22:306.67-0.16
15-12-2024 22:207.02-0.14
15-12-2024 22:107.35-0.15
15-12-2024 22:007.69-0.15
15-12-2024 21:508.02-0.18
15-12-2024 21:408.39-0.19
15-12-2024 21:308.77-0.2
15-12-2024 21:209.16-0.21
15-12-2024 21:109.58-0.19
15-12-2024 21:0010.01-0.17
15-12-2024 20:5010.43-0.15
15-12-2024 20:4010.86-0.11
15-12-2024 20:3011.28-0.07
15-12-2024 20:2011.690
15-12-2024 20:1012.080.07
15-12-2024 20:0012.380.1
15-12-2024 19:5012.640.13
15-12-2024 19:4012.880.2
15-12-2024 19:3013.020.21
15-12-2024 19:2013.070.21
15-12-2024 19:1013.050.2
15-12-2024 19:0012.960.16
15-12-2024 18:5012.820.15
15-12-2024 18:4012.60.11
15-12-2024 18:3012.340.09
15-12-2024 18:2012.070.1
15-12-2024 18:1011.770.13
15-12-2024 18:0011.390.12
15-12-2024 17:5010.980.12
15-12-2024 17:4010.580.13
15-12-2024 17:3010.120.13
15-12-2024 17:209.670.14
15-12-2024 17:109.210.15
15-12-2024 17:008.730.15
15-12-2024 16:508.240.14
15-12-2024 16:407.750.12
15-12-2024 16:307.270.12
15-12-2024 16:206.830.15
15-12-2024 16:106.40.19
15-12-2024 16:005.940.19
15-12-2024 15:505.550.24
15-12-2024 15:405.190.31
15-12-2024 15:304.770.3
15-12-2024 15:204.360.3
15-12-2024 15:103.90.22
15-12-2024 15:003.430.09
15-12-2024 14:502.94-0.06
15-12-2024 14:402.52-0.19
15-12-2024 14:302.17-0.27
15-12-2024 14:201.84-0.37
15-12-2024 14:101.44-0.57
15-12-2024 14:001.14-0.72
15-12-2024 13:501.09-0.68
15-12-2024 13:401.14-0.57
15-12-2024 13:301.22-0.48
15-12-2024 13:201.34-0.39
15-12-2024 13:101.5-0.31
15-12-2024 13:001.68-0.25
15-12-2024 12:501.87-0.22
15-12-2024 12:402.08-0.2
15-12-2024 12:302.29-0.21
15-12-2024 12:202.53-0.22
15-12-2024 12:102.77-0.24
15-12-2024 12:003.02-0.27
15-12-2024 11:503.27-0.31
15-12-2024 11:403.56-0.31
15-12-2024 11:303.88-0.28
15-12-2024 11:204.18-0.28
15-12-2024 11:104.48-0.28
15-12-2024 11:004.79-0.26
15-12-2024 10:505.09-0.25
15-12-2024 10:405.41-0.22
15-12-2024 10:305.72-0.2
15-12-2024 10:206.03-0.19
15-12-2024 10:106.36-0.17
15-12-2024 10:006.69-0.15
15-12-2024 09:507.02-0.16
15-12-2024 09:407.35-0.16
15-12-2024 09:307.69-0.19
15-12-2024 09:208.02-0.23
15-12-2024 09:108.38-0.27
15-12-2024 09:008.76-0.3
15-12-2024 08:509.13-0.34
15-12-2024 08:409.53-0.35
15-12-2024 08:309.96-0.34
15-12-2024 08:2010.37-0.34
15-12-2024 08:1010.79-0.31
15-12-2024 08:0011.2-0.28
15-12-2024 07:5011.6-0.22
15-12-2024 07:4011.98-0.15
15-12-2024 07:3012.28-0.12
15-12-2024 07:2012.55-0.06
15-12-2024 07:1012.780
15-12-2024 07:0012.920.04
15-12-2024 06:5012.990.06
15-12-2024 06:4012.960.05
15-12-2024 06:3012.880.05
15-12-2024 06:2012.750.05
15-12-2024 06:1012.550.04
15-12-2024 06:0012.320.05
15-12-2024 05:5012.060.08
15-12-2024 05:4011.750.1
15-12-2024 05:3011.390.11
15-12-2024 05:2010.980.11
15-12-2024 05:1010.580.13
15-12-2024 05:0010.140.14
15-12-2024 04:509.690.15
15-12-2024 04:409.230.16
15-12-2024 04:308.730.14
15-12-2024 04:208.230.12
15-12-2024 04:107.740.11
15-12-2024 04:007.260.12
15-12-2024 03:506.80.13
15-12-2024 03:406.360.16
15-12-2024 03:305.90.17
15-12-2024 03:205.530.24
15-12-2024 03:105.130.29
15-12-2024 03:004.730.31
15-12-2024 02:504.290.29
15-12-2024 02:403.810.19
15-12-2024 02:303.340.08
15-12-2024 02:202.88-0.05
15-12-2024 02:102.49-0.13
15-12-2024 02:002.17-0.19
15-12-2024 01:501.83-0.3
15-12-2024 01:401.44-0.5
15-12-2024 01:301.23-0.57
15-12-2024 01:201.18-0.52
15-12-2024 01:101.23-0.43
15-12-2024 01:001.31-0.34
15-12-2024 00:501.45-0.24
15-12-2024 00:401.6-0.17
15-12-2024 00:301.79-0.11
15-12-2024 00:201.97-0.09
15-12-2024 00:102.18-0.07