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
15-02-2026 01:404.950.19
 Next HWNext LW
05:55, 10.92 12:32, 2.91
Date Highest 2026 Date Lowest 2026
04-02 14.02m 03-02 0.75m
Time (GMT)ElevationResidual
17-12-2025 00:003.40.06
16-12-2025 23:503.19-0.02
16-12-2025 23:402.96-0.15
16-12-2025 23:302.75-0.3
16-12-2025 23:202.59-0.44
16-12-2025 23:102.54-0.5
16-12-2025 23:002.54-0.53
16-12-2025 22:502.59-0.55
16-12-2025 22:402.69-0.55
16-12-2025 22:302.81-0.53
16-12-2025 22:202.97-0.51
16-12-2025 22:103.14-0.49
16-12-2025 22:003.32-0.46
16-12-2025 21:503.53-0.43
16-12-2025 21:403.76-0.38
16-12-2025 21:303.99-0.34
16-12-2025 21:204.23-0.3
16-12-2025 21:104.45-0.28
16-12-2025 21:004.7-0.24
16-12-2025 20:504.96-0.2
16-12-2025 20:405.19-0.2
16-12-2025 20:305.46-0.17
16-12-2025 20:205.75-0.14
16-12-2025 20:106.03-0.13
16-12-2025 20:006.3-0.14
16-12-2025 19:506.58-0.14
16-12-2025 19:406.87-0.15
16-12-2025 19:307.15-0.18
16-12-2025 19:207.44-0.2
16-12-2025 19:107.74-0.22
16-12-2025 19:008.03-0.24
16-12-2025 18:508.34-0.25
16-12-2025 18:408.64-0.26
16-12-2025 18:308.93-0.26
16-12-2025 18:209.22-0.26
16-12-2025 18:109.5-0.25
16-12-2025 18:009.78-0.22
16-12-2025 17:5010.03-0.2
16-12-2025 17:4010.25-0.18
16-12-2025 17:3010.45-0.16
16-12-2025 17:2010.64-0.11
16-12-2025 17:1010.8-0.07
16-12-2025 17:0010.91-0.04
16-12-2025 16:50110
16-12-2025 16:4011.040.03
16-12-2025 16:3011.040.06
16-12-2025 16:2011.020.09
16-12-2025 16:1010.950.11
16-12-2025 16:0010.860.15
16-12-2025 15:5010.730.17
16-12-2025 15:4010.560.18
16-12-2025 15:3010.380.21
16-12-2025 15:2010.160.22
16-12-2025 15:109.920.22
16-12-2025 15:009.650.21
16-12-2025 14:509.390.23
16-12-2025 14:409.10.22
16-12-2025 14:308.830.24
16-12-2025 14:208.540.26
16-12-2025 14:108.240.26
16-12-2025 14:007.940.28
16-12-2025 13:507.630.28
16-12-2025 13:407.320.3
16-12-2025 13:3070.3
16-12-2025 13:206.690.32
16-12-2025 13:106.410.36
16-12-2025 13:006.110.38
16-12-2025 12:505.820.4
16-12-2025 12:405.540.44
16-12-2025 12:305.260.45
16-12-2025 12:204.990.47
16-12-2025 12:104.710.45
16-12-2025 12:004.430.41
16-12-2025 11:504.150.35
16-12-2025 11:403.870.25
16-12-2025 11:303.590.12
16-12-2025 11:203.360.02
16-12-2025 11:103.14-0.11
16-12-2025 11:002.91-0.29
16-12-2025 10:502.72-0.46
16-12-2025 10:402.65-0.54
16-12-2025 10:302.64-0.59
16-12-2025 10:202.7-0.59
16-12-2025 10:102.82-0.56
16-12-2025 10:002.95-0.53
16-12-2025 09:503.12-0.49
16-12-2025 09:403.31-0.43
16-12-2025 09:303.51-0.38
16-12-2025 09:203.74-0.31
16-12-2025 09:103.96-0.25
16-12-2025 09:004.2-0.19
16-12-2025 08:504.43-0.15
16-12-2025 08:404.67-0.11
16-12-2025 08:304.92-0.06
16-12-2025 08:205.17-0.03
16-12-2025 08:105.43-0.01
16-12-2025 08:005.710.03
16-12-2025 07:505.990.05
16-12-2025 07:406.260.06
16-12-2025 07:306.540.05
16-12-2025 07:206.830.05
16-12-2025 07:107.110.03
16-12-2025 07:007.410.02
16-12-2025 06:507.710.02
16-12-2025 06:4080
16-12-2025 06:308.320.01
16-12-2025 06:208.640.03
16-12-2025 06:108.940.05
16-12-2025 06:009.250.08
16-12-2025 05:509.520.08
16-12-2025 05:409.830.15
16-12-2025 05:3010.110.2
16-12-2025 05:2010.340.23
16-12-2025 05:1010.560.28
16-12-2025 05:0010.730.3
16-12-2025 04:5010.880.33
16-12-2025 04:40110.36
16-12-2025 04:3011.070.38
16-12-2025 04:2011.120.4
16-12-2025 04:1011.110.4
16-12-2025 04:0011.060.39
16-12-2025 03:5010.980.39
16-12-2025 03:4010.870.38
16-12-2025 03:3010.720.36
16-12-2025 03:2010.560.35
16-12-2025 03:1010.370.36
16-12-2025 03:0010.170.36
16-12-2025 02:509.940.35
16-12-2025 02:409.680.33
16-12-2025 02:309.410.32
16-12-2025 02:209.140.31
16-12-2025 02:108.860.32
16-12-2025 02:008.570.31
16-12-2025 01:508.30.32
16-12-2025 01:408.020.33
16-12-2025 01:307.720.33
16-12-2025 01:207.410.32
16-12-2025 01:107.120.33
16-12-2025 01:006.820.33
16-12-2025 00:506.550.35
16-12-2025 00:406.270.37
16-12-2025 00:306.010.4
16-12-2025 00:205.740.42
16-12-2025 00:105.470.43