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

 


Latest Tide Data (Predicted Tide Table)

Time (GMT)ElevationResidual
18-01-2026 19:4012.140.21
 Next HWNext LW
07:41, 12.45 01:58, 2.05
Date Highest 2026 Date Lowest 2026
06-01 13.49m 06-01 0.83m
Time (GMT)ElevationResidual
16-12-2025 00:005.220.44
15-12-2025 23:504.960.44
15-12-2025 23:404.720.42
15-12-2025 23:304.460.38
15-12-2025 23:204.20.3
15-12-2025 23:103.960.22
15-12-2025 23:003.730.12
15-12-2025 22:503.530.02
15-12-2025 22:403.38-0.06
15-12-2025 22:303.23-0.18
15-12-2025 22:203.1-0.3
15-12-2025 22:103.04-0.38
15-12-2025 22:003.03-0.42
15-12-2025 21:503.07-0.44
15-12-2025 21:403.14-0.46
15-12-2025 21:303.25-0.45
15-12-2025 21:203.38-0.43
15-12-2025 21:103.53-0.4
15-12-2025 21:003.7-0.36
15-12-2025 20:503.9-0.31
15-12-2025 20:404.1-0.26
15-12-2025 20:304.31-0.21
15-12-2025 20:204.52-0.17
15-12-2025 20:104.73-0.13
15-12-2025 20:004.98-0.08
15-12-2025 19:505.21-0.05
15-12-2025 19:405.46-0.02
15-12-2025 19:305.730.02
15-12-2025 19:205.990.04
15-12-2025 19:106.250.04
15-12-2025 19:006.520.03
15-12-2025 18:506.780.01
15-12-2025 18:407.06-0
15-12-2025 18:307.33-0.02
15-12-2025 18:207.6-0.06
15-12-2025 18:107.87-0.09
15-12-2025 18:008.17-0.09
15-12-2025 17:508.46-0.1
15-12-2025 17:408.74-0.1
15-12-2025 17:309.01-0.11
15-12-2025 17:209.29-0.09
15-12-2025 17:109.56-0.06
15-12-2025 17:009.84-0.01
15-12-2025 16:5010.090.03
15-12-2025 16:4010.290.06
15-12-2025 16:3010.490.11
15-12-2025 16:2010.680.18
15-12-2025 16:1010.850.25
15-12-2025 16:0010.960.29
15-12-2025 15:5011.010.3
15-12-2025 15:4011.020.32
15-12-2025 15:3011.010.33
15-12-2025 15:2010.940.32
15-12-2025 15:1010.840.3
15-12-2025 15:0010.70.28
15-12-2025 14:5010.570.29
15-12-2025 14:4010.410.3
15-12-2025 14:3010.240.31
15-12-2025 14:2010.030.31
15-12-2025 14:109.80.3
15-12-2025 14:009.540.28
15-12-2025 13:509.280.27
15-12-2025 13:409.010.26
15-12-2025 13:308.730.25
15-12-2025 13:208.450.25
15-12-2025 13:108.170.26
15-12-2025 13:007.880.25
15-12-2025 12:507.580.25
15-12-2025 12:407.270.24
15-12-2025 12:306.970.24
15-12-2025 12:206.680.25
15-12-2025 12:106.390.27
15-12-2025 12:006.10.28
15-12-2025 11:505.80.27
15-12-2025 11:405.520.27
15-12-2025 11:305.240.27
15-12-2025 11:204.980.26
15-12-2025 11:104.70.22
15-12-2025 11:004.410.14
15-12-2025 10:504.140.06
15-12-2025 10:403.920
15-12-2025 10:303.7-0.09
15-12-2025 10:203.53-0.15
15-12-2025 10:103.36-0.25
15-12-2025 10:003.23-0.32
15-12-2025 09:503.16-0.38
15-12-2025 09:403.15-0.39
15-12-2025 09:303.19-0.38
15-12-2025 09:203.25-0.36
15-12-2025 09:103.36-0.32
15-12-2025 09:003.49-0.27
15-12-2025 08:503.63-0.22
15-12-2025 08:403.8-0.16
15-12-2025 08:303.98-0.09
15-12-2025 08:204.19-0.01
15-12-2025 08:104.390.06
15-12-2025 08:004.60.12
15-12-2025 07:504.840.19
15-12-2025 07:405.060.24
15-12-2025 07:305.30.3
15-12-2025 07:205.570.36
15-12-2025 07:105.830.41
15-12-2025 07:006.070.42
15-12-2025 06:506.340.44
15-12-2025 06:406.590.43
15-12-2025 06:306.850.43
15-12-2025 06:207.10.4
15-12-2025 06:107.370.38
15-12-2025 06:007.640.36
15-12-2025 05:507.920.36
15-12-2025 05:408.190.34
15-12-2025 05:308.470.33
15-12-2025 05:208.740.33
15-12-2025 05:109.020.34
15-12-2025 05:009.260.32
15-12-2025 04:509.510.33
15-12-2025 04:409.760.36
15-12-2025 04:309.970.36
15-12-2025 04:2010.180.39
15-12-2025 04:1010.330.37
15-12-2025 04:0010.450.36
15-12-2025 03:5010.570.36
15-12-2025 03:4010.660.36
15-12-2025 03:3010.70.35
15-12-2025 03:2010.710.33
15-12-2025 03:1010.690.32
15-12-2025 03:0010.650.3
15-12-2025 02:5010.570.28
15-12-2025 02:4010.470.27
15-12-2025 02:3010.340.26
15-12-2025 02:2010.20.26
15-12-2025 02:1010.040.26
15-12-2025 02:009.860.27
15-12-2025 01:509.670.28
15-12-2025 01:409.450.28
15-12-2025 01:309.210.27
15-12-2025 01:208.990.29
15-12-2025 01:108.760.32
15-12-2025 01:008.520.33
15-12-2025 00:508.270.35
15-12-2025 00:408.030.38
15-12-2025 00:307.780.41
15-12-2025 00:207.540.45
15-12-2025 00:107.30.5